--- cited_by: [] datasets: - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset is derived under the Cross-Calibrated Multi-Platform (CCMP) project and contains a value-added 6-hourly gridded analysis of ocean surface winds. The CCMP datasets combine cross-calibrated satellite winds obtained from Remote Sensing Systems (REMSS) using a Variational Analysis Method (VAM) to produce a high-resolution (0.25 degree) gridded analysis. The CCMP data set includes cross-calibrated satellite winds derived from SSM/I, SSMIS, AMSR-E, TRMM TMI, QuikSCAT, SeaWinds, WindSat and other satellite instruments as they become available from REMSS. REMSS uses a cross-calibrated sea-surface emissivity model function which improves the consistency between wind speed retrievals from microwave radiometers (i.e., SSM/I, SSMIS, AMSR, TMI, and WindSat) and those from scatterometers (i.e., QuikSCAT and SeaWinds). The VAM combines these data with in situ measurements and a starting estimate (first guess) of the wind field. The European Center for Medium-Range Weather Forecasts (ECMWF) ERA-40 Reanalysis is used as the first-guess from 1987 to 1998. The ECMWF Operational analysis is used from January 1999 onward. All wind observations and analysis fields are referenced to a height of 10 meters. The ERA-40 can be obtained from the Computation and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR): http://rda.ucar.edu/datasets/ds117.0/. The ECMWF Operational analysis can also be obtained from CISL at NCAR: http://rda.ucar.edu/datasets/ds111.1/. Three products are distributed to complete the CCMP dataset series. L3.0 product contains high-resolution analyses every 6-hours. These data are then time averaged over monthly and 5-day periods to derive the L3.5 product. Directions from the L3.0 product are then assigned to the time and location of the passive microwave satellite wind speed observations to derive the L2.5 product. All datasets are distributed on a 0.25 degree cylindrical coordinate grid. This dataset is one in a series of First-Look (FLK) CCMP datasets and is a continuation and expansion of the SSM/I surface wind velocity project that began under the NASA Pathfinder Program. Refinements and upgrades to the FLK version will be incorporated under a new release (date to be determined) known as Late-look (LLK) and may include additional satellite datasets. All satellite surface wind data are obtained from REMSS under the DISCOVER project: Distributed Information Services: Climate/Ocean Products and Visualizations for Earth Research (http://www.discover-earth.org/index.html). The CCMP project is the result of an investigation funded by the NASA Making Earth Science data records for Use in Research Environments (MEaSUREs) program (http://community.eosdis.nasa.gov/measures/). In accordance with the MEaSUREs program, the CCMP datasets are also known as Earth System Data Records (ESDRs). In collaboration with private and government institutions, a team led by Dr. Robert Atlas (PI; proposal originally solicited by REASoN, and currently funded by MEaSURES) has created the CCMP project to provide multi-instrument ocean surface wind velocity ESDRs, with wide ranging research applications in meteorology and oceanography.' description_attribution: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_0_WIND_VECTORS_FLK display_name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.0 First-Look Analyses doi: ~ end_time: 2011-12-31T18:00:00 identifier: nasa-podaac-ccmp_measures_atlas_l4_ow_l3_0_wind_vectors_flk lat_max: 78 lat_min: -78 lon_max: 360 lon_min: 0 name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.0 First-Look Analyses native_id: CCMP_MEASURES_ATLAS_L4_OW_L3_0_WIND_VECTORS_FLK processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1987-07-02T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-ccmp_measures_atlas_l4_ow_l3_0_wind_vectors_flk url: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_0_WIND_VECTORS_FLK variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset is derived under the Cross-Calibrated Multi-Platform (CCMP) project and contains a value-added 5-day mean ocean surface wind and pseudostress to approximate a satellite-only climatological data record. The CCMP datasets combine cross-calibrated satellite winds obtained from Remote Sensing Systems (REMSS) using a Variational Analysis Method (VAM) to produce a high-resolution (0.25 degree) gridded analysis. The CCMP data set includes cross-calibrated satellite winds derived from SSM/I, SSMIS, AMSR-E, TRMM TMI, QuikSCAT, SeaWinds, WindSat and other satellite instruments as they become available from REMSS. REMSS uses a cross-calibrated sea-surface emissivity model function which improves the consistency between wind speed retrievals from microwave radiometers (i.e., SSM/I, SSMIS AMSR, TMI, and WindSat) and those from scatterometers (i.e., QuikSCAT and SeaWinds). The VAM combines these data with in situ measurements and a starting estimate (first guess) of the wind field. The European Center for Medium-Range Weather Forecasts (ECMWF) ERA-40 Reanalysis is used as the first-guess from 1987 to 1998. The ECMWF Operational analysis is used from January 1999 onward. All wind observations and analysis fields are referenced to a height of 10 meters. The ERA-40 can be obtained from the Computation and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR): http://rda.ucar.edu/datasets/ds117.0/. The ECMWF Operational analysis can also be obtained from CISL at NCAR: http://rda.ucar.edu/datasets/ds111.1/. Three products are distributed to complete the CCMP dataset series. L3.0 product contains high-resolution analyses every 6-hours. These data are then time averaged over monthly and 5-day periods to derive the L3.5 product. Directions from the L3.0 product are then assigned to the time and location of the passive microwave satellite wind speed observations to derive the L2.5 product. All datasets are distributed on a 0.25 degree cylindrical coordinate grid. This dataset is one in a series of First-Look (FLK) CCMP datasets and is a continuation and expansion of the SSM/I surface wind velocity project that began under the NASA Pathfinder Program. Refinements and upgrades to the FLK version will be incorporated under a new release (date to be determined) known as Late-look (LLK) and may include additional satellite datasets. All satellite surface wind data are obtained from REMSS under the DISCOVER project: Distributed Information Services: Climate/Ocean Products and Visualizations for Earth Research (http://www.discover-earth.org/index.html). The CCMP project is the result of an investigation funded by the NASA Making Earth Science data records for Use in Research Environments (MEaSUREs) program (http://community.eosdis.nasa.gov/measures/). In accordance with the MEaSUREs program, the CCMP datasets are also known as Earth System Data Records (ESDRs). In collaboration with private and government institutions, a team led by Dr. Robert Atlas (PI; proposal originally solicited by REASoN, and currently funded by MEaSURES) has created the CCMP project to provide multi-instrument ocean surface wind velocity ESDRs, with wide ranging research applications in meteorology and oceanography.' description_attribution: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_5A_5DAY_WIND_VECTORS_FLK display_name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.5A Pentad First-Look Analyses doi: ~ end_time: 2011-12-31T18:00:00 identifier: nasa-podaac-ccmp_measures_atlas_l4_ow_l3_5a_5day_wind_vectors_flk lat_max: 78 lat_min: -78 lon_max: 360 lon_min: 0 name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.5A Pentad First-Look Analyses native_id: CCMP_MEASURES_ATLAS_L4_OW_L3_5A_5DAY_WIND_VECTORS_FLK processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1987-07-02T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-ccmp_measures_atlas_l4_ow_l3_5a_5day_wind_vectors_flk url: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_5A_5DAY_WIND_VECTORS_FLK variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset is derived under the Cross-Calibrated Multi-Platform (CCMP) project and contains a value-added monthly mean ocean surface wind and pseudostress to approximate a satellite-only climatological data record. The CCMP datasets combine cross-calibrated satellite winds obtained from Remote Sensing Systems (REMSS) using a Variational Analysis Method (VAM) to produce a high-resolution (0.25 degree) gridded analysis. The CCMP data set includes cross-calibrated satellite winds derived from SSM/I, SSMIS, AMSR-E, TRMM TMI, QuikSCAT, SeaWinds, WindSat and other satellite instruments as they become available from REMSS. REMSS uses a cross-calibrated sea-surface emissivity model function which improves the consistency between wind speed retrievals from microwave radiometers (i.e., SSM/I, SSMIS, AMSR, TMI, WindSat) and those from scatterometers (i.e., QuikSCAT and SeaWinds). The VAM combines these data with in situ measurements and a starting estimate (first guess) of the wind field. The European Center for Medium-Range Weather Forecasts (ECMWF) ERA-40 Reanalysis is used as the first-guess from 1987 to 1998. The ECMWF Operational analysis is used from January 1999 onward. All wind observations and analysis fields are referenced to a height of 10 meters. The ERA-40 can be obtained from the Computation and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR): http://rda.ucar.edu/datasets/ds117.0/. The ECMWF Operational analysis can also be obtained from CISL at NCAR: http://rda.ucar.edu/datasets/ds111.1/. Three products are distributed to complete the CCMP dataset series. L3.0 product contains high-resolution analyses every 6-hours. These data are then time averaged over monthly and 5-day periods to derive the L3.5 product. Directions from the L3.0 product are then assigned to the time and location of the passive microwave satellite wind speed observations to derive the L2.5 product. All datasets are distributed on a 0.25 degree cylindrical coordinate grid. This dataset is one in a series of First-Look (FLK) CCMP datasets and is a continuation and expansion of the SSM/I surface wind velocity project that began under the NASA Pathfinder Program. Refinements and upgrades to the FLK version will be incorporated under a new release (date to be determined) known as Late-look (LLK) and may include additional satellite datasets. All satellite surface wind data are obtained from REMSS under the DISCOVER project: Distributed Information Services: Climate/Ocean Products and Visualizations for Earth Research (http://www.discover-earth.org/index.html). The CCMP project is the result of an investigation funded by the NASA Making Earth Science data records for Use in Research Environments (MEaSUREs) program (http://community.eosdis.nasa.gov/measures/). In accordance with the MEaSUREs program, the CCMP datasets are also known as Earth System Data Records (ESDRs). In collaboration with private and government institutions, a team led by Dr. Robert Atlas (PI; proposal originally solicited by REASoN, and currently funded by MEaSURES) has created the CCMP project to provide multi-instrument ocean surface wind velocity ESDRs, with wide ranging research applications in meteorology and oceanography.' description_attribution: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_5A_MONTHLY_WIND_VECTORS_FLK display_name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.5A Monthly First-Look Analyses doi: ~ end_time: 2011-12-31T18:00:00 identifier: nasa-podaac-ccmp_measures_atlas_l4_ow_l3_5a_monthly_wind_vectors_flk lat_max: 78 lat_min: -78 lon_max: 360 lon_min: 0 name: Cross-Calibrated Multi-Platform Ocean Surface Wind Vector L3.5A Monthly First-Look Analyses native_id: CCMP_MEASURES_ATLAS_L4_OW_L3_5A_MONTHLY_WIND_VECTORS_FLK processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1987-07-02T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-ccmp_measures_atlas_l4_ow_l3_5a_monthly_wind_vectors_flk url: http://podaac.jpl.nasa.gov/dataset/CCMP_MEASURES_ATLAS_L4_OW_L3_5A_MONTHLY_WIND_VECTORS_FLK variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'OSCAR (Ocean Surface Current Analysis Real-time) contains near-surface ocean current estimates, derived using quasi-linear and steady flow momentum equations. The horizontal velocity is directly estimated from sea surface height, surface vector wind and sea surface temperature. these data were collected from the various satellites and in situ instruments. The model formulation combines geostrophic, Ekman and Stommel shear dynamics, and a complementary term from the surface buoyancy gradient. Data are on a 1 degree grid with a 5 day resoultion. OSCAR is generated by Earth Space Research (ESR) http://www.esr.org/oscar_index.html' description_attribution: http://podaac.jpl.nasa.gov/dataset/OSCAR_L4_OC_1deg display_name: OSCAR 1 degree ocean surface currents doi: ~ end_time: ~ identifier: nasa-podaac-oscar_l4_oc_1deg lat_max: 66 lat_min: -66 lon_max: 180 lon_min: -180 name: OSCAR 1 degree ocean surface currents native_id: OSCAR_L4_OC_1deg processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-10-12T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-oscar_l4_oc_1deg url: http://podaac.jpl.nasa.gov/dataset/OSCAR_L4_OC_1deg variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'OSCAR (Ocean Surface Current Analysis Real-time) contains near-surface ocean current estimates, derived using quasi-linear and steady flow momentum equations. The horizontal velocity is directly estimated from sea surface height, surface vector wind and sea surface temperature. These data were collected from the various satellites and in situ instruments. The model formulation combines geostrophic, Ekman and Stommel shear dynamics, and a complementary term from the surface buoyancy gradient. Data are on a 1/3 degree grid with a 5 day resolution. OSCAR is generated by Earth Space Research (ESR) http://www.esr.org/oscar_index.html' description_attribution: http://podaac.jpl.nasa.gov/dataset/OSCAR_L4_OC_third-deg display_name: OSCAR third degree resolution ocean surface currents doi: ~ end_time: ~ identifier: nasa-podaac-oscar_l4_oc_third-deg lat_max: 66 lat_min: -66 lon_max: 180 lon_min: -180 name: OSCAR third degree resolution ocean surface currents native_id: OSCAR_L4_OC_third-deg processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-10-12T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-oscar_l4_oc_third-deg url: http://podaac.jpl.nasa.gov/dataset/OSCAR_L4_OC_third-deg variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This SeaWinds on QuikSCAT scatterometer-derived Arctic sea ice classification dataset is provided as a service to the ocean and sea ice research communities on behalf of Dr. David Long at Brigham Young University (BYU) and the Scatterometer Climate Record Pathfinder (SCP). This dataset provides nominal 4.45 km (pixel resolution at reference latitude 70 N) gridded fields that classify First-Year (FY) and Multi-Year (MY) sea ice using SeaWinds on QuikSCAT scatterometer observations on a daily basis from 20 June 2002 through 23 November 2009. It is unique from other sea ice classification datasets primarily due to its utilization of passive microwave AMSR-E data to provide the initial ocean/ice masking edge and the use of a seasonal threshold for FY and MY sea ice classification from only SeaWinds data.The dataset is derived from daily gridded QuikSCAT vertically polarized (V-pol) egg backscatter data from the SCP, which is made available at the PO.DAAC: http://podaac.jpl.nasa.gov/dataset/QUIKSCAT_BYU_L3_OW_SIGMA0_ENHANCED . A seasonally varying threshold was derived by Swan and Long (2012) and used to discriminate between FY and MY sea ice based on QuikSCAT V-pol egg backscatter. The sea ice mask was derived by applying threshold constraints to the SCP AMSR-E 6 GHz images, which are made available by the BYU SCP: http://www.scp.byu.edu/data/AMSRE/SIR/AMSRE_sir.html . The data is provided in a CF-compliant, netCDF version 3 format. Further details on the algorithms and validation are described in further detail by Swan and Long (2012). The dataset, software readers and user guide documentation may all be accessed here: ftp://podaac.jpl.nasa.gov/allData/quikscat/preview/L3/byu_scp/sea_ice_age/arctic/ . For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT .' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_ARCTIC_SEAICE_AGE_CLASS_BYUSCP_V1 display_name: SeaWinds on QuikSCAT Arctic Sea Ice Age Classification (BYU/SCP) doi: ~ end_time: 2009-11-23T23:59:59 identifier: nasa-podaac-qscat_arctic_seaice_age_class_byuscp_v1 lat_max: 90 lat_min: 47.5 lon_max: 180 lon_min: -180 name: SeaWinds on QuikSCAT Arctic Sea Ice Age Classification (BYU/SCP) native_id: QSCAT_ARCTIC_SEAICE_AGE_CLASS_BYUSCP_V1 processing_level: ~ publication_year: ~ release_dt: 2012-10-26T02:07:33 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 2002-06-20T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_arctic_seaice_age_class_byuscp_v1 url: http://podaac.jpl.nasa.gov/dataset/QSCAT_ARCTIC_SEAICE_AGE_CLASS_BYUSCP_V1 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains GIF images of polar-stereographic-gridded, daily averaged Sigma-0 retrievals over the Antarctic Polar from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU). The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The GIF image files are separated according to polarization, and the averaged Sigma-0 measurements are displayed in grayscale with no color bar. Very bright areas indicate high Sigma-0 averages. It should be noted that these GIF images are meant for browse purposes only and should not be considered science quality. The science quality source dataset containing the SIR files used to generate the GIF images is accessible here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE. An additional complimentary dataset of SIR files contains the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Images of Antarctica doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_images lat_max: -70 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Images of Antarctica native_id: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_images url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains GIF images of polar-stereographic-gridded Sigma-0 retrievals over the Antarctic Polar region from SeaWinds on QuikSCAT retrievals subsetted and averaged twice daily at the local time-of-day (LTOD); local times are approximately morning (04:00 to 12:00 local) and afternoon (12:00 to 20:00 local). The eight hour interval at each LTOD reference of morning vs. afternoon corresponds to the natural boundaries of time separation within the data at polar latitudes. Hence, morning and afternoon are used as approximations for the LTOD reference, where the actual LTOD may vary within the respective 8 hour interval. It should be noted that these GIF images are meant for browse purposes only and should not be considered science quality. The GIF images are generated from a scientific dataset employing a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the science quality source dataset containing the SIR files used to generate the GIF images is accessible here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD. The SeaWinds scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. As with the SIR files, the GIF images are separated according to polarization. For example, one SIR file for a particular day and LTOD will contain the gridded average Sigma-0 values derived from the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Images of Antarctica doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_images_ltod lat_max: -70 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Images of Antarctica native_id: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD processing_level: ~ publication_year: ~ release_dt: 2012-03-21T22:24:36 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_images_ltod url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded Sigma-0 retrieval statistics over the Antarctic Polar region from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are all contained within a single tar file for a given day. When the tar file is unpacked, the individual SIR files are separated according to polarization and the corresponding retrieval statistic (i.e., daily average, standard deviation, and daily measurement counts). Consequently, there are 6 SIR files contained within each unpacked tar file. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES. An additional complimentary dataset includes a reduced version of these Sigma-0 retrieval statistics by providing only the daily Sigma-0 average: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE. This dataset is provided by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Complete) of Antarctica doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_full lat_max: -70 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Complete) of Antarctica native_id: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_full url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded, daily averaged Sigma-0 retrievals over the Antarctic Polar region from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are separated according to polarization. For example, one SIR file for a particular day will contain the gridded average Sigma-0 values for the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES. An expanded version of this dataset includes the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL. This dataset is provided by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Reduced) of Antarctica doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_lite lat_max: -70 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Reduced) of Antarctica native_id: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_lite url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded Sigma-0 retrievals over the Anarctic Polar region from SeaWinds on QuikSCAT retrievals subsetted and averaged twice daily at the local time-of-day (LTOD); local times are approximately morning (04:00 to 12:00 local) and afternoon (12:00 to 20:00 local). The eight hour interval at each LTOD reference of morning vs. afternoon corresponds to the natural boundaries of time separation within the data at polar latitudes. Hence, morning and afternoon are used as approximations for the LTOD reference, where the actual LTOD may vary within the respective 8 hour interval. This dataset is generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. These SIR files were also used to generate a complimentary dataset of GIF images meant for browse purposes only and is available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are separated according to polarization. For example, one SIR file for a particular day and LTOD will contain the gridded average Sigma-0 values for the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Maps of Antarctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod lat_max: -70 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Maps of Antarctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD processing_level: ~ publication_year: ~ release_dt: 2012-03-21T22:08:28 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains GIF images of polar-stereographic-gridded, daily averaged Sigma-0 retrievals over the Arctic Polar from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU). The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The GIF image files are separated according to polarization, and the averaged Sigma-0 measurements are displayed in grayscale with no color bar. Very bright areas indicate high Sigma-0 averages. It should be noted that these GIF images are meant for browse purposes only and should not be considered science quality. The science quality source dataset containing the SIR files used to generate the GIF images is accessible here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE. An additional complimentary dataset of SIR files contains the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Images of Arctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_images lat_max: 89.6 lat_min: 70 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Images of Arctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_images url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains GIF images of polar-stereographic-gridded Sigma-0 retrievals over the Antarctic Polar region from SeaWinds on QuikSCAT retrievals subsetted and averaged twice daily at the local time-of-day (LTOD); local times are approximately morning (00:00 to 08:00 local) and evening (16:00 to 24:00 local). The eight hour interval at each LTOD reference of morning vs. evening corresponds to the natural boundaries of time separation within the data at polar latitudes. Hence, morning and evening are used as approximations for the LTOD reference, where the actual LTOD may vary within the respective 8 hour interval. It should be noted that these GIF images are meant for browse purposes only and should not be considered science quality. The GIF images are generated from a scientific dataset employing a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the science quality source dataset containing the SIR files used to generate the GIF images is accessible here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD. The SeaWinds scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. As with the SIR files, the GIF images are separated according to polarization. For example, one SIR file for a particular day and LTOD will contain the gridded average Sigma-0 values derived from the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Images of Arctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_images_ltod lat_max: 89.6 lat_min: 70 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Images of Arctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD processing_level: ~ publication_year: ~ release_dt: 2012-03-21T22:17:56 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_images_ltod url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded Sigma-0 retrieval statistics over the Arctic Polar region from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are all contained within a single tar file for a given day. When the tar file is unpacked, the individual SIR files are separated according to polarization and the corresponding retrieval statistic (i.e., daily average, standard deviation, and daily measurement counts). Consequently, there are 6 SIR files contained within each unpacked tar file. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES. An additional complimentary dataset includes a reduced version of these Sigma-0 retrieval statistics by providing only the daily Sigma-0 average: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Complete) of Arctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_full lat_max: 89.6 lat_min: 70 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Complete) of Arctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_full url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded, daily averaged Sigma-0 retrievals over the Arctic Polar region from the QuikSCAT L1B retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are separated according to polarization. For example, one SIR file for a particular day will contain the gridded average Sigma-0 values for the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES. An expanded version of this dataset includes the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_FULL. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Reduced) of Arctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_lite lat_max: 89.6 lat_min: 70 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Reduced) of Arctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_lite url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains polar-stereographic-gridded Sigma-0 retrievals over the Arctic Polar region from SeaWinds on QuikSCAT retrievals subsetted and averaged twice daily at the local time-of-day (LTOD); local times are approximately morning (00:00 to 08:00 local) and evening (16:00 to 24:00 local). The eight hour interval at each LTOD reference of morning vs. evening corresponds to the natural boundaries of time separation within the data at polar latitudes. Hence, morning and evening are used as approximations for the LTOD reference, where the actual LTOD may vary within the respective 8 hour interval. This dataset is generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. These SIR files were also used to generate a complimentary dataset of GIF images meant for browse purposes only and is available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_IMAGES_LTOD. The QuikSCAT scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are separated according to polarization. For example, one SIR file for a particular day and LTOD will contain the gridded average Sigma-0 values for the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Maps of Arctic Region doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_ltod lat_max: 89.6 lat_min: 70 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Local-Time-of-Day Browse Maps of Arctic Region native_id: QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD processing_level: ~ publication_year: ~ release_dt: 2012-03-21T21:53:50 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_arctic_polar-stereographic_browse_maps_ltod url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ARCTIC_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains GIF images of global, rectangular-gridded, daily averaged Sigma-0 retrievals from SeaWinds on QuikSCAT retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU). The SeaWinds scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The GIF image files are separated according to polarization, and the averaged Sigma-0 measurements are displayed in grayscale with no color bar. Very bright areas indicate high Sigma-0 averages. It should be noted that these GIF images are meant for browse purposes only and should not be considered science quality. The science quality source dataset containing the SIR files used to generate the GIF images is accessible here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_LITE. An additional complimentary dataset of SIR files contains the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_FULL. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_IMAGES display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Images doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_images lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Images native_id: QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_IMAGES processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_images url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_IMAGES variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains global, rectangular-gridded Sigma-0 retrieval statistics from SeaWinds on QuikSCAT retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The SeaWinds scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are all contained within a single tar file for a given day. When the tar file is unpacked, the individual SIR files are separated according to polarization and the corresponding retrieval statistic (i.e., daily average, standard deviation, and daily measurement counts). Consequently, there are 6 SIR files contained within each unpacked tar file. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_IMAGES. An additional complimentary dataset includes a reduced version of these Sigma-0 retrieval statistics by providing only the daily Sigma-0 average: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_LITE. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_FULL display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Maps (Complete) doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_maps_full lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Maps (Complete) native_id: QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_FULL processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_maps_full url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_FULL variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains global, rectangular-gridded, daily averaged Sigma-0 retrievals from SeaWinds on QuikSCAT retrievals, which are generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long at Brigham Young University (BYU); the processed files are therefore known as SIR files. The SeaWinds scatterometer scans at two nominal incidence angles, 46 degrees and 54.1 degrees, corresponding to the inner and outer beams respectively. The inner beam is horizontally polarized while the outer beam is vertically polarized. The SIR files are separated according to polarization. For example, one SIR file for a particular day will contain the globally gridded average Sigma-0 values for the horizontally polarized L1B retrievals, while the other will contain those from the vertically polarized L1B retrievals. These SIR files were also used to generate a complimentary dataset of GIF images representing the daily averaged Sigma-0, which is meant for browse purposes only and available here: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_IMAGES. An expanded version of this dataset includes the full daily Sigma-0 statistcs: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_FULL. This dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at BYU.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_LITE display_name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Maps (Reduced) doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_maps_lite lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Sigma-0 Global Rectangular Browse Maps (Reduced) native_id: QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_LITE processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_global_rectangular_browse_maps_lite url: http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_GLOBAL_RECTANGULAR_BROWSE_MAPS_LITE variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains images of daily averaged ocean surface wind vectors derived from the gridded Level 3 QuikSCAT ocean surface wind vector dataset. These images are provided in GIF format at 900x600 pixel resolution. Vector arrows are colored according to wind speed, and a color bar is available to estimate the wind speed. The arrow is directionally oriented with the flow direction of the 10 m ocean surface wind velocity retrievals derived from the NASA SeaWinds scatterometer aboard the QuikSCAT satellite platform. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT . Disclaimer: this dataset is meant for quick-look purposes only and is not intended for science-quality research applications.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_OW_JPL_BROWSE_IMAGES display_name: SeaWinds on QuikSCAT Level 3 Daily Gridded 0.25 Degree Browse Images doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_l3_ow_jpl_browse_images lat_max: 89.875 lat_min: -89.875 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Daily Gridded 0.25 Degree Browse Images native_id: QSCAT_L3_OW_JPL_BROWSE_IMAGES processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_l3_ow_jpl_browse_images url: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_OW_JPL_BROWSE_IMAGES variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains ocean surface Eastward wind from SeaWinds on QuikSCAT binned and averaged monthly on 1 degree grids. The coverage is from August 1999 through October 2009. The QuikSCAT Project produced this dataset in support of the CMIP5 (Coupled Model Intercomparison Project Phase 5) under the World Climate Research Program (WCRP) and was first made available via the Earth System Grid. This dataset was derived directly from the QuikSCAT Level 2B dataset, which can be accessed here: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B. The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. Along with this dataset, two additional ancillary data files are included in the same directory which contain the number of observations and standard error co-located on the same 1 degree grids. This wind vector dataset is designed to be used in conjunction with the complete wind vector dataset, which include separate dataset files for both the Northward component and total wind speed of the wind vector. All corresponding dataset and ancillary data files are included in a common directory. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_EASTWARD_WIND_1DEG_1MO display_name: SeaWinds on QuikSCAT Level 3 Surface Eastward Wind for Climate Model Comparison doi: ~ end_time: 2009-10-31T23:59:59 identifier: nasa-podaac-qscat_l3_sfc_eastward_wind_1deg_1mo lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Surface Eastward Wind for Climate Model Comparison native_id: QSCAT_L3_SFC_EASTWARD_WIND_1DEG_1MO processing_level: ~ publication_year: ~ release_dt: 2012-04-12T00:04:27 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-08-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_l3_sfc_eastward_wind_1deg_1mo url: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_EASTWARD_WIND_1DEG_1MO variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains ocean surface Northward wind from SeaWinds on QuikSCAT binned and averaged monthly on 1 degree grids. The coverage is from August 1999 through October 2009. The QuikSCAT Project produced this dataset in support of the CMIP5 (Coupled Model Intercomparison Project Phase 5) under the World Climate Research Program (WCRP) and was first made available via the Earth System Grid. This dataset was derived directly from the QuikSCAT Level 2B dataset, which can be accessed here: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B. The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. Along with this dataset, two additional ancillary data files are included in the same directory which contain the number of observations and standard error co-located on the same 1 degree grids. This wind vector dataset is designed to be used in conjunction with the complete wind vector dataset, which include separate dataset files for both the Eastward component and total wind speed of the wind vector. All corresponding dataset and ancillary data files are included in a common directory. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_NORTHWARD_WIND_1DEG_1MO display_name: SeaWinds on QuikSCAT Level 3 Surface Northward Wind for Climate Model Comparison doi: ~ end_time: 2009-10-31T23:59:59 identifier: nasa-podaac-qscat_l3_sfc_northward_wind_1deg_1mo lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Surface Northward Wind for Climate Model Comparison native_id: QSCAT_L3_SFC_NORTHWARD_WIND_1DEG_1MO processing_level: ~ publication_year: ~ release_dt: 2012-04-12T00:10:03 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-08-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_l3_sfc_northward_wind_1deg_1mo url: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_NORTHWARD_WIND_1DEG_1MO variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains ocean surface wind speed from SeaWinds on QuikSCAT binned and averaged monthly on 1 degree grids. The coverage is from August 1999 through October 2009. The QuikSCAT Project produced this dataset in support of the CMIP5 (Coupled Model Intercomparison Project Phase 5) portion of under the World Climate Research Program (WCRP) and was first made available via the Earth System Grid. This dataset was derived directly from the QuikSCAT Level 2B dataset, which can be accessed here: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B. The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. Along with this dataset, two additional ancillary data files are included in the same directory which contain the number of observations and standard error co-located on the same 1 degree grids. This wind speed dataset is designed to be used in conjunction with the complete wind vector dataset, which include separate dataset files for both the Northward and Eastward components of the wind vector. All corresponding dataset and ancillary data files are included in a common directory. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_WIND_SPEED_1DEG_1MO display_name: SeaWinds on QuikSCAT Level 3 Surface Wind Speed for Climate Model Comparison doi: ~ end_time: 2009-10-31T23:59:59 identifier: nasa-podaac-qscat_l3_sfc_wind_speed_1deg_1mo lat_max: 89.6 lat_min: -89.6 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Surface Wind Speed for Climate Model Comparison native_id: QSCAT_L3_SFC_WIND_SPEED_1DEG_1MO processing_level: ~ publication_year: ~ release_dt: 2012-04-11T23:49:31 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-08-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_l3_sfc_wind_speed_1deg_1mo url: http://podaac.jpl.nasa.gov/dataset/QSCAT_L3_SFC_WIND_SPEED_1DEG_1MO variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset has been superseded by Version 3: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_OWV_COMP_12 . This QuikSCAT Level 2B dataset contains science-quality ocean surface wind vector retrievals from the NASA SeaWinds scatterometer. The Version 2 L2B data continues to be openly distributed to allow sufficient time for community acceptance of the Version 3 dataset. The retrievals are provided on a non-uniform grid within the swath at 12.5 km pixel resolution. Higher resolution is achieved through a slice composite technique in which high resolution slice measurements from L1B data are composited into a 12.5 km wind vector cell. The increased sampling resolution enables users to obtain wind vectors 10 km closer to shore when compared to the 25 km L2B dataset. Each L2B file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit. An ASCII inline quality report (Q2B) has been generated for each L2B file; each Q2B file provides statistics of various quality elements pertaining to the processing of a specific L2B file. These wind vector retrievals have been processed using the QSCAT-1 geophysical model function. This is the official dataset produced by the QuikSCAT Project through the SeaWinds Processing and Analysis Center (SeaPAC). The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT .' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_COMP_12 display_name: SeaWinds on QuikSCAT L2B Ocean Wind Vectors in 12.5km Slice Composites doi: ~ end_time: 2009-11-22T00:01:22 identifier: nasa-podaac-qscat_level_2b_comp_12 lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT L2B Ocean Wind Vectors in 12.5km Slice Composites native_id: QSCAT_LEVEL_2B_COMP_12 processing_level: ~ publication_year: ~ release_dt: 2013-03-14T18:41:07 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_level_2b_comp_12 url: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_COMP_12 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains the latest reprocessed version 3 of the Level 2B science-quality ocean surface wind vector retrievals from the QuikSCAT scatterometer. The retrievals are provided on a non-uniform grid within the swath at 12.5 km pixel resolution. Higher resolution is achieved through a slice composite technique in which high resolution slice measurements from L1B data are composited into a 12.5 km wind vector cell. Version 3 processing begins with the same L1B (time-ordered backscatter) data as used in the previous processing. Version 3 has several improvements over the previous JPL processing of the QuikSCAT L2B winds: 1) changes to measurement binning, which was done in order to decrease noise and reduce gaps in the 12.5 km L2B wind retrievals, 2) an improved geophysical model function (GMF) to model the effect of wind on backscatter, 3) a neural network approach to correct rain contaminated winds speeds, 4) cross-track dependent wind speed biases were estimated and removed from the wind retrievals. The 12.5 km binning resolution enables users to obtain wind vector retrievals 10 km closer to shore when compared to the 25 km L2B dataset (only available in versions 1 and 2). More details to the processing changes and improvements are noted by Fore et al. (2014): ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/docs/fore_et_al_ieee_2014.pdf . Each L2B file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit. This is the official dataset produced by the QuikSCAT Project through the SeaWinds Processing and Analysis Center (SeaPAC). The Version 3 User Guide document is accessible here: ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/docs/qscat_l2b_v3_ug_v1_0.pdf . Read software is made available in MATLAB, Python, R, and IDL and is accessible here: ftp://podaac.jpl.nasa.gov/allData/quikscat/L2B12/sw/ .' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_OWV_COMP_12 display_name: QuikSCAT Level 2B Ocean Wind Vectors in 12.5km Slice Composites Version 3 doi: ~ end_time: 2009-11-22T00:06:41 identifier: nasa-podaac-qscat_level_2b_owv_comp_12 lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: QuikSCAT Level 2B Ocean Wind Vectors in 12.5km Slice Composites Version 3 native_id: QSCAT_LEVEL_2B_OWV_COMP_12 processing_level: ~ publication_year: ~ release_dt: 2013-03-14T18:41:07 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-10-27T15:18:34 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_level_2b_owv_comp_12 url: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_OWV_COMP_12 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset has been superseded by Version 3: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_OWV_COMP_12 . This QuikSCAT Level 2B dataset contains the Version 2 science-quality ocean surface wind vector retrievals from the NASA SeaWinds scatterometer. The Version 2 L2B data continues to be openly distributed to allow sufficient time for community acceptance of the Version 3 dataset. The retrievals are provided on a non-uniform grid within the swath at 25 km pixel resolution. Each L2B file corresponds to a specific orbital revolution (rev) number, which begins at the southernmost point of the ascending orbit. An ASCII inline quality report (Q2B) has been generated for each L2B file; each Q2B file provides statistics of various quality elements pertaining to the processing of a specific L2B file. These wind vector retrievals have been processed using the QSCAT-1 geophysical model function. This is the official dataset produced by the QuikSCAT Project through the SeaWinds Processing and Analysis Center (SeaPAC). The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. This represents the 2nd version of the L2B processing. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT .' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_V2 display_name: SeaWinds on QuikSCAT Level 2B Ocean Wind Vectors in 25 Km Swath Grid Version 2 doi: ~ end_time: 2009-11-22T00:01:22 identifier: nasa-podaac-qscat_level_2b_v2 lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 2B Ocean Wind Vectors in 25 Km Swath Grid Version 2 native_id: QSCAT_LEVEL_2B_V2 processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_level_2b_v2 url: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_2B_V2 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains 0.25 degree gridded ocean surface wind vector fields from the NASA SeaWinds scatterometer aboard the QuikSCAT satellite platform. Gridded wind vector fields are provided twice daily daily according to the timing of the ascending and descending satellite swath coverage; where multiple swaths from a particular ascending or descending sample period intersect a given point, the the data from the most recent swath coverage over-writes the data from the earlier (adjacent) swath. Quality flags are provided for each wind vector cell to assist in identifying potential rain contamination and whether data from both inner and outer beams are available. Wind vectors are null when within 30 km of land/ice boundaries or where there are no wind vector retrievals available. Gridded wind vector fields are processed directly from the QuikSCAT Level 2B swath data which uses the QSCAT-1 geophysical model function. No additional processing to the wind vector data is applied. The SeaWinds instrument is a conical scanning pencil-beam radar, with dual-beam and dual-polarization capability, operating at Ku-band to provide all-weather ocean surface wind vector retrievals. This represents the 2nd version of the Level 3 processing. For more information on the QuikSCAT platform and mission, please visit http://podaac.jpl.nasa.gov/OceanWind/QuikSCAT . Disclaimer: this dataset is meant for quick-look purposes only and is not intended for science-quality research applications.' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_3_V2 display_name: SeaWinds on QuikSCAT Level 3 Daily Gridded Ocean Wind Vectors (JPL Version 2) doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-qscat_level_3_v2 lat_max: 89.875 lat_min: -89.875 lon_max: 360 lon_min: 0 name: SeaWinds on QuikSCAT Level 3 Daily Gridded Ocean Wind Vectors (JPL Version 2) native_id: QSCAT_LEVEL_3_V2 processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_level_3_v2 url: http://podaac.jpl.nasa.gov/dataset/QSCAT_LEVEL_3_V2 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This high-resolution, gridded QuikSCAT scatterometer dataset with enhanced coastal coverage of the United States West Coast contains ocean surface wind and stress vector retrievals (magnitude and direction and zonal/meridional components) and derived quantities (wind speed squared, wind speed cubed, surface relative vorticity, vector wind divergence, wind stress curl, and wind stress divergence). The spatial coverage domain extends from latitude 30 degrees North to 50 degrees North and longitude 135 degrees West to 115 degrees West. The coastal wind vector retrieval algorithm developed by Barry Vanhoff and Michael Freilich has been utilized to provide improved coastal wind vector retrievals from QuikSCAT, resulting in retrievals as close as 5 km from coastlines. This dataset was developed by Barry Vanhoff, Craig Risien and Ted Strub and is made possible by funding provided by the NASA Research Opportunities in Space and Earth Science (ROSES) program and NOAA funded, Cooperative Institute for Oceanographic Satellite Studies (CIOSS) at the Oregon State University (OSU) College of Earth, Ocean and Atmospheric Sciences (CEOAS). PO.DAAC has agreed to provide this dataset as a special service to its users with the mutual understanding that issues or problems may remain in the data set, as noted below. All new users considering this dataset are strongly encouraged to first read the user guide and then to take full advantage of all potential dataset announcements through registration with PO.DAAC by emailing podaac@podaac.jpl.nasa.gov. It is further suggested that users examine a sequence of multiple parameter fields for the region and period of interest to ensure sufficient data quality and continuity. At present, it is worth noting the following known issues with regard to this dataset: a) data fields were produced using a modification of QuikSCAT Version 2 (i.e., previous version) winds, b) median-pass filter ambiguity removal is employed, hence not achieving the potential improvements from DIRTH, which affect the directional quality of the wind vector and stress data, c) does not incorporate the latest QuikSCAT re-processing improvements (i.e., Version 3 is most recent), d) different model winds (improved compared to Version 2 QuikSCAT L2B) are used in the ambiguity removal process for the entire dataset, and e) because of the lack of usable rain flags within 30 km of the coast, the rain flag value closest to the coast from the standard processing is applied between that rain flag location and the coast. There are some consequences in light of the above issues, notably: a) the wind vector fields should not be merged with any other existing QuikSCAT dataset, b) there is more inherent structure to the data (in both signal and noise) compared to Version 3 data, c) data fields are smoother in comparison to the Version 2 data, and d) potentially spurious wind vectors may arise within ~30 km of the coast due to unflagged rain contaminated data and/or residual land reflections. More information including known problems/issues and important dataset updates can be found in the dataset user guide: ftp://podaac.jpl.nasa.gov/allData/quikscat/preview/L3/osu_coas/docs/qscat_vanhoff_uswc_userguide.pdf .' description_attribution: http://podaac.jpl.nasa.gov/dataset/QSCAT_OSUCOAS_L3_OW_USWestCoast display_name: SeaWinds on QuikSCAT Level 3 Near-Coast Wind and Stress Fields with Enhanced Coverage for the US West Coast (OSU/COAS) doi: ~ end_time: 2009-11-21T14:34:00 identifier: nasa-podaac-qscat_osucoas_l3_ow_uswestcoast lat_max: 50 lat_min: 30 lon_max: -115 lon_min: -135 name: SeaWinds on QuikSCAT Level 3 Near-Coast Wind and Stress Fields with Enhanced Coverage for the US West Coast (OSU/COAS) native_id: QSCAT_OSUCOAS_L3_OW_USWestCoast processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-20T02:26:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-qscat_osucoas_l3_ow_uswestcoast url: http://podaac.jpl.nasa.gov/dataset/QSCAT_OSUCOAS_L3_OW_USWestCoast variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: "This dataset contains enhanced resolution gridded fields of the normalized radar cross-section (sigma-0) made from the SeaWinds on QuikSCAT L1B dataset using two different forms of the single-variate Scatterometer Image Reconstruction (SIR) algorithm: 1) for 'egg' sigma-0 measurements and 2) for 'slice' sigma-0 measurements, where the SIR with filtering (SIRF) algorithm is used. For 'egg' measurements, the full antenna/processing spatial response is used while a simplified spatial response function in which the spatial response is assumed to be 1 over the footprint and 0 elsewhere is used for 'slice' measurements. The SIR algorithm with 'eggs' makes images of sigma-0 at the measurement incidence angle at 4.5 km pixel resolution. The effective resolution varies depending on region and sampling conditions but is estimated to be 8-10 km in most areas. The SIRF algorithm with 'slices' makes images at 2.225 km pixel resolution with an estimated effective resolution of 6-8 km. It is worth noting that 'slice' measurements are inherently noisier than 'egg' measurements. This dataset has been pre-subsetted for the following regions: Alaska, Amazonia, Antarctica, Arctic, Australia, Bering Strait, Greenland, Central America, East China Sea, Sea of Japan, Europe, Indonesia, Northern Africa, North America, Southern Africa, South America, Southern Asia, and Siberia. Non-enhanced fields are also provided at lower resolution in a 'GRD' gridded format that does not utilize SIR processing; 'GRD' fields are provided at 11.125 km and 22.25 km pixel resolution for slices and eggs, respectively. In addition to Sigma-0, various statistical parameters are provided for added guidance, including but not limited to: standard deviation of incidence angle, mean incidence angle, measurement counts, pixel time, mean reconstruction error, and standard deviation of the reconstructed sigma-0. Sigma-0 fields are available for specific ascending/descending nodes, local time of day, or as a daily average. SIR-formatted land mask files (containing 0 for ocean and 1 for land) are available for each standard region. SIR-formatted files containing the gridded latitude and longitude pixel locations within each region are also available. All SIR files are produced in IEEE formatted binary and gzipped for ease of transfer and storage. Each SIR file adheres to a specific naming convention, as shown here: http://scp.byu.edu/docs/SIRfilename.html. Some additional user notes can be found here: http://www.scp.byu.edu/docs/QSCAT_user_notes.html." description_attribution: http://podaac.jpl.nasa.gov/dataset/QUIKSCAT_BYU_L3_OW_SIGMA0_ENHANCED display_name: 'SeaWinds on QuikSCAT Enhanced Resolution Regionally Gridded Sigma-0 (BYU, D. Long)' doi: ~ end_time: 2009-11-21T23:59:59 identifier: nasa-podaac-quikscat_byu_l3_ow_sigma0_enhanced lat_max: 89.6 lat_min: -89.6 lon_max: 180 lon_min: -180 name: 'SeaWinds on QuikSCAT Enhanced Resolution Regionally Gridded Sigma-0 (BYU, D. Long)' native_id: QUIKSCAT_BYU_L3_OW_SIGMA0_ENHANCED processing_level: ~ publication_year: ~ release_dt: 2011-11-04T05:22:09 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1999-07-19T18:39:31 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-quikscat_byu_l3_ow_sigma0_enhanced url: http://podaac.jpl.nasa.gov/dataset/QUIKSCAT_BYU_L3_OW_SIGMA0_ENHANCED variables: ~ version: ~ vertical_extent: ~ display_name: quick-scatterometer/seawinds href: http://52.38.26.42:8080/platform/quick-scatterometer/instrument/seawinds.yaml instrument_identifier: seawinds location: ~ parents: [] platform_identifier: quick-scatterometer type: instrument_instance uri: /platform/quick-scatterometer/instrument/seawinds