--- cited_by: [] datasets: - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The Gridded Altimeter Fields with Enhanced Coastal Coverage data product contains Sea Surface Height Anomalies (SSHA or SLA) and zonal and meridional geostrophic velocities for the US west coast encompassing 35.25 deg-48.5 deg N latitude and 227.75 deg-248.5 deg E longitude. This annually updated data product extends from October 14, 1992 through November 4, 2009. SSHA and current velocities are derived from the AVISO quarter degree DT UPD MSLA version 3.0 grids, 0.75 deg and greater away from the coast. Values within 0.75 deg of the coast are derived from tide gauge observations and interpolated out to the altimeter filled region. Details on how these data are derived can be found in: Saraceno, M., P. T. Strub, and P. M. Kosro (2008), Estimates of sea surface height and near-surface alongshore coastal currents from combinations of altimeters and tide gauges, J. Geophys. Res., 113, C11013, doi:10.1029/2008JC004756.' description_attribution: http://podaac.jpl.nasa.gov/dataset/ALT_TIDE_GAUGE_L4_OST_SLA_US_WEST_COAST display_name: Gridded Altimeter Fields with Enhanced Coastal Coverage doi: ~ end_time: 2012-04-18T00:00:00 identifier: nasa-podaac-alt_tide_gauge_l4_ost_sla_us_west_coast lat_max: 48.5 lat_min: 35.25 lon_max: 227.75 lon_min: 248.5 name: Gridded Altimeter Fields with Enhanced Coastal Coverage native_id: ALT_TIDE_GAUGE_L4_OST_SLA_US_WEST_COAST processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-10-14T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-alt_tide_gauge_l4_ost_sla_us_west_coast url: http://podaac.jpl.nasa.gov/dataset/ALT_TIDE_GAUGE_L4_OST_SLA_US_WEST_COAST variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains absolute dynamic topography (similar to sea level but with respect to the geoid) binned and averaged monthly on 1 degree grids. The coverage is from October 1992 to December 2010. These data were provided by AVISO (French space agency data provider) to support the CMIP5 (Coupled Model Intercomparison Project Phase 5) under the World Climate Research Program (WCRP) and was first made available via the JPL Earth System Grid. The dynamic topography are derived from sea surface height measured by several satellites including Envisat, TOPEX/Poseidon, Jason-1 and OSTM/Jason-2, and referenced to the geoid. 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.' description_attribution: http://podaac.jpl.nasa.gov/dataset/AVISO_L4_DYN_TOPO_1DEG_1MO display_name: AVISO Level 4 Absolute Dynamic Topography for Climate Model Comparison doi: ~ end_time: 2010-12-30T00:00:00 identifier: nasa-podaac-aviso_l4_dyn_topo_1deg_1mo lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: AVISO Level 4 Absolute Dynamic Topography for Climate Model Comparison native_id: AVISO_L4_DYN_TOPO_1DEG_1MO processing_level: ~ publication_year: ~ release_dt: 2012-01-24T02:40:25 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-10-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-aviso_l4_dyn_topo_1deg_1mo url: http://podaac.jpl.nasa.gov/dataset/AVISO_L4_DYN_TOPO_1DEG_1MO variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains along track geo-referenced Sea Surface Height Anomalies (SSHA) from TOPEX/Poseidon, Jason-1 and OSTM/Jason-2 (depending on time period) merged onto a single mean reference orbit. All biases and cross-calibrations have been applied to the data so SSHA are consistent between satellites to form a single climate data record. Altimeter data from the multi-mission Geophysical Data Records (GDRs) are interpolated to a common reference orbit facilitating direct time series analysis of the geo-referenced SSH. The data are in netCDF format in an array based on 3-dimensions (rev#, index, cycle) that permits direct access of individual locations at specific times (i.e., temporal and spatial sub-sampling). The data start at September 1992 and is presently updated to January 2013. The newest data are appended to the file quarterly.' description_attribution: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_ALL_V2 display_name: Integrated Multi-Mission Ocean Altimeter Data for Climate Research complete time series Version 2 doi: ~ end_time: ~ identifier: nasa-podaac-merged_tp_j1_ostm_ost_all_v2 lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: Integrated Multi-Mission Ocean Altimeter Data for Climate Research complete time series Version 2 native_id: MERGED_TP_J1_OSTM_OST_ALL_V2 processing_level: ~ publication_year: ~ release_dt: 2013-02-28T18:38:46 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-09-25T04:46:52 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-merged_tp_j1_ostm_ost_all_v2 url: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_ALL_V2 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains along track geo-referenced Sea Surface Height Anomalies (SSHA) from TOPEX/Poseidon, Jason-1 and OSTM/Jason-2 (depending on time period) merged into a single mean reference orbit. All biases and cross-calibrations have been applied to the data so SSHA are consistent between satellites to form a single climate data record. Altimeter data from the multi-mission Geophysical Data Records (GDRs) are interpolated to a common reference orbit facilitating direct time series analysis of the geo-referenced SSH. The data are in netCDF format in an array based on 3-dimensions (rev#, index, cycle) that permits direct access of individual locations at specific times (i.e., temporal and spatial sub-sampling). Each file consists of one cycle of data, which is approximately 10 days long. Cycle 001 coincides with cycle 001 of TOPEX/Poseidon (September 25-October 3, 1992) and is presently updated to cycle 748, which coincides with OSTM/Jason-2 cycle 166 (January 3-13, 2013).' description_attribution: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_CYCLES_V2 display_name: Integrated Multi-Mission Ocean Altimeter Data for Climate Research Version 2 doi: ~ end_time: ~ identifier: nasa-podaac-merged_tp_j1_ostm_ost_cycles_v2 lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: Integrated Multi-Mission Ocean Altimeter Data for Climate Research Version 2 native_id: MERGED_TP_J1_OSTM_OST_CYCLES_V2 processing_level: ~ publication_year: ~ release_dt: 2013-02-28T18:51:58 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-09-25T04:46:52 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-merged_tp_j1_ostm_ost_cycles_v2 url: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_CYCLES_V2 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains the Global Mean Sea Level (GMSL) trend generated from the Integrated Multi-Mission Ocean Altimeter Data for Climate Research ( http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_ALL ). The GMSL is a 1-dimensional time series of globally averaged Sea Surface Height Anomalies (SSHA) from TOPEX/Poseidon, Jason-1 and OSTM/Jason-2. It starts in September 1992 to present, with a lag of up to 4 months. All biases and cross-calibrations have been applied to the data so SSHA are consistent between satellites. Glacial Isostatic Adjustment (GIA) has not been applied, but it has been smoothed with a 60 day filter. These data are available in ASCII format.' description_attribution: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_GMSL_ASCII_V2 display_name: Global Mean Sea Level Trend from Integrated Multi-Mission Ocean Altimeters TOPEX/Poseidon Jason-1 and OSTM/Jason-2 Version 2 doi: ~ end_time: ~ identifier: nasa-podaac-merged_tp_j1_ostm_ost_gmsl_ascii_v2 lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: Global Mean Sea Level Trend from Integrated Multi-Mission Ocean Altimeters TOPEX/Poseidon Jason-1 and OSTM/Jason-2 Version 2 native_id: MERGED_TP_J1_OSTM_OST_GMSL_ASCII_V2 processing_level: ~ publication_year: ~ release_dt: 2013-03-01T01:18:45 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-09-25T04:46:52 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-merged_tp_j1_ostm_ost_gmsl_ascii_v2 url: http://podaac.jpl.nasa.gov/dataset/MERGED_TP_J1_OSTM_OST_GMSL_ASCII_V2 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: 'The Reconstructed Sea Level dataset contains sea level anomalies derived from satellite altimetry and tide gauges. The satellite altimetric record provides accurate measurements of sea level with near-global coverage, but it has a relatively short time span, since 1993. Tide gauges have measured sea level over the last 200 years, with some records extending back to 1807, but they only provide regional coverage, not global. Combining satellite altimetry with tide gauges, using a technique known as sea level reconstruction, results in a dataset with the record length of the tide gauges and the near-global coverage of satellite altimetry. Cyclostationary empirical orthogonal functions (CSEOFs), derived from satellite altimetry, are combined with historical sea level measurements from tide gauges to create the Reconstructed Sea Level dataset spanning from 1950 through 2009. Combining the altimetric and tide gauge records alleviates the difficulties caused by the short record length and poor spatial distribution of the satellite altimetry and tide gauges, respectively. Previous sea level reconstructions have utilized empirical orthogonal functions (EOFs) as basis functions, but by using CSEOFs and by addressing other aspects of the reconstruction procedure, an alternative sea level reconstruction can be computed. The resulting reconstructed sea level dataset has weekly temporal resolution and half-degree spatial resolution. For specific information on the algorithm and how the CSEOFs are applied to the tide gauge data please see Hamlington et al. 2011.' description_attribution: http://podaac.jpl.nasa.gov/dataset/RECON_SEA_LEVEL_OST_L4_V1 display_name: Reconstructed Sea Level Version 1 doi: ~ end_time: 2009-06-27T23:46:00 identifier: nasa-podaac-recon_sea_level_ost_l4_v1 lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: Reconstructed Sea Level Version 1 native_id: RECON_SEA_LEVEL_OST_L4_V1 processing_level: ~ publication_year: ~ release_dt: 2012-08-09T00:33:46 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1950-06-16T23:46:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-recon_sea_level_ost_l4_v1 url: http://podaac.jpl.nasa.gov/dataset/RECON_SEA_LEVEL_OST_L4_V1 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'Originally the GCP was intended to correct GDRs for Point Target Response (PTR) changes in the TOPEX "side A" altimeter (Alt-A) which operated from launch in August 1992 until February 1999. The most obvious of these changes was a more or less steady increase in the significant wave height (SWH) from approximately cycle 162 onward that reached about 0.4 m when the switch was made from Alt-A to Alt-B in February 1999 (cycle 235/236). Changes in PTR are also likely to affect the range measurement at the centimeter level. The amount of this change is still under investigation. Tide gauge calibration of the entire TOPEX data set suggest that the net change in sea surface height was less than or approximately 1 cm from the PTR change. Changes to SWH and range will be determined by waveform retracking (usually simply called "retracking") using the method of Rodriguez (Ref. 7). Determining changes in range to much better than 1 cm and in SWH to better than 0.1 m became increasingly important as global change researchers attempted to determine sea level rise to better than 1 mm/yr globally and also to determine geographic patterns in the sea level change. The SWH is of interest not only as a geophysical variable but also because it is used in calculating the electromagnetic bias (EMB) that corrects the altimeter range. Furthermore, the EMB correction is different at the Ku and C band frequencies of the TOPEX altimeter, so that changes in EMB also cause changes in the estimate of the ionospheric correction. The original premise of the GCP was that all data would be corrected by retracking to be consistent with data from very early in the mission (before approximately cycle 100) when there were no observed changes in the altimeter. Retracking of cycles 021 through 026 showed systematic differences between the GDR values of SWH and range at both K and C bands that were functions of hemisphere and orbit direction. In order to preserve as much of existing analysis as possible, it was decided to attempt to keep retracking from perturbing the values for early cycles simply because of the difference between retracking and the GDR. Thus, "quadrant adjustments" to K and C range and SWH depending on hemisphere and orbit direction (north ascending, north descending, south ascending, south descending, abbreviated as NA, ND, SA, SD) were introduced. Since Jason is being calibrated to Alt-B, the usefulness of these adjustments to Alt-A (or to Alt-B, for that matter) will have to be determined after Jason Cal/Val. Finding a reliable way of estimating the PTR proved to be much more difficult than expected, so the GCP was still not released as Jason launch approached. It was then decided to add additional fields to the product to make the TOPEX data compatible with the Jason data. As indicated below, these "Jason compatibility" fields are named with a prefix of "jas_". Furthermore, in order to provide data quickly for global comparisons during Jason Cal/Val, the GCP software was modified to produce GCPs using just TOPEX (I)GDRs.' description_attribution: http://podaac.jpl.nasa.gov/dataset/TOPEX_GCP display_name: 'TOPEX GDR Correction Product - GCP (Callahan)' doi: ~ end_time: 2005-10-04T00:00:00 identifier: nasa-podaac-topex_gcp lat_max: 90 lat_min: -90 lon_max: 360 lon_min: 0 name: 'TOPEX GDR Correction Product - GCP (Callahan)' native_id: TOPEX_GCP processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1993-02-28T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-topex_gcp url: http://podaac.jpl.nasa.gov/dataset/TOPEX_GCP variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The TOPEX/POSEIDON GDR (Geophysical Data Record) contains global coverage altimeter data. The objective of the TOPEX/POSEIDON mission, launched in August 1992, is to determine ocean topography with a sea surface height measurement precision of 3 cm and a sealevel measurement accuracy of 13 cm. The dataset contains measurements from two altimeters, a NASA dual frequency (Ku and C band) instrument similar to the Geosat altimeter, and a French space agency (CNES) instrument which is a proof-of-concept solid-state altimeter (Ku band). It also contains Sea Surface Height (SSH), significant wave height, ionospheric correction, tides and other geophysical corrections. It is emphasized that this product is considered research data because of the form and content of the data. The data consist entirely of files comprising headers and data records which contain over a hundred parameters for each second. It is swath data and there are no images. Analysis software is the responsibility of the user. Calculation of sea surface height anomalies from the altimeter range and environmental corrections is the responsibility of the user. This dataset is formatted as little-endian binary. The data are arranged in 10 day cycles that are separated into 254 passes, each about 56 minutes.' description_attribution: http://podaac.jpl.nasa.gov/dataset/TOPEX_L2_OST_GDR_VMS display_name: TOPEX/Poseidon L2 Ocean Surface Topography Geophysical Data Record Vax byte order little endian doi: ~ end_time: 2005-10-07T23:49:45 identifier: nasa-podaac-topex_l2_ost_gdr_vms lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: TOPEX/Poseidon L2 Ocean Surface Topography Geophysical Data Record Vax byte order little endian native_id: TOPEX_L2_OST_GDR_VMS processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-10-01T00:00:00 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-topex_l2_ost_gdr_vms url: http://podaac.jpl.nasa.gov/dataset/TOPEX_L2_OST_GDR_VMS variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains the crossover points from TOPEX(ocean TOPography EXperiment)/Poseidon Merged Geophysical Data Record version B (MGDR-B). The MGDR-B combines measurements from two altimeters, TOPEX, a NASA dual frequency (Ku and C band) instrument, and a French (CNES) instrument which is a proof-of-concept solid-state altimeter, Poseidon (Ku band). The parameters are slightly different than the regular pass data in the MGDR-B, but does contain significant wave height, sigma-0, wet troposphere, ionospheric correction, tides and the parameters required to calculate Sea Surface Height Anomaly (SSHA). For more information on the parameters please visit ftp://podaac.jpl.nasa.gov/allData/topex/L2/mgdrb/docs/uhmgdrb/html/uhsec08.htm.' description_attribution: http://podaac.jpl.nasa.gov/dataset/TOPEX_L2_OST_MGDR_CROSSOVER display_name: TOPEX/Poseidon L2 Ocean Surface Topography Merged Geophysical Data Record Crossover ver B doi: ~ end_time: 1998-06-26T06:25:26 identifier: nasa-podaac-topex_l2_ost_mgdr_crossover lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: TOPEX/Poseidon L2 Ocean Surface Topography Merged Geophysical Data Record Crossover ver B native_id: TOPEX_L2_OST_MGDR_CROSSOVER processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1996-04-24T00:23:25 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-topex_l2_ost_mgdr_crossover url: http://podaac.jpl.nasa.gov/dataset/TOPEX_L2_OST_MGDR_CROSSOVER variables: ~ version: ~ vertical_extent: ~ - access_dt: 2015-02-05T09:37:25 attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'This dataset contains Sea Surface Height Anomalies (SSHA) calculated from the TOPEX/Poseidon Merged Geophysical Data Record version b (MGDR-b). The files contain Significant Wave Height (SWH), Total Electron Count (TEC) and SSHA. The data have been edited so land and bad/flagged values are removed, therefore this dataset is intended only for open ocean. If you need values closer to land you will need to calculate SSHA yourself from the MGDR-b. The calculation and editing can be found at ftp://podaac.jpl.nasa.gov/allData/topex/L2/tp_ssha/docs/tpssha_manual_v2.html. The data are in binary format and available from January 1993 to October 2005.' description_attribution: http://podaac.jpl.nasa.gov/dataset/TOPEX_SSHA_V2 display_name: TOPEX/POSEIDON Altimeter Sea Surface Height Anomaly doi: ~ end_time: 2005-10-08T23:49:45 identifier: nasa-podaac-topex_ssha_v2 lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: TOPEX/POSEIDON Altimeter Sea Surface Height Anomaly native_id: TOPEX_SSHA_V2 processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-12-31T07:23:26 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac-topex_ssha_v2 url: http://podaac.jpl.nasa.gov/dataset/TOPEX_SSHA_V2 variables: ~ version: ~ vertical_extent: ~ - access_dt: ~ attributes: ~ cite_metadata: ~ data_qualifier: ~ description: 'The TOPEX/POSEIDON MGDR (Merged Geophysical Data Record) contains global coverage altimeter data. This data set (MGDR-B) contains generation B data which replaces the generation A data set. The objective of the TOPEX/POSEIDON mission, launched in August 1992 and currently operating, is to determine ocean topography with a sea surface height measurement precision of 3 cm and a sea level measurement accuracy of 13 cm. The data product combines measurements from two altimeters, a NASA dual frequency (Ku and C band) instrument similar to the Geosat altimeter, and a French (CNES) instrument which is a proof-of-concept solid-state altimeter (Ku band). This data set contains mean sea surface, ionospheric corrections, sigma0 and all parameters needed to calculate sea surface height anomalies and total electron content. The data are in binary format.' description_attribution: http://podaac.jpl.nasa.gov/dataset/PODAAC_MGDR display_name: TOPEX/POSEIDON ALTIMETER MERGED GEOPHYSICAL DATA RECORD GENERATION B doi: ~ end_time: 2005-10-08T23:49:45 identifier: nasa-podaac_mgdr lat_max: 66 lat_min: -66 lon_max: 360 lon_min: 0 name: TOPEX/POSEIDON ALTIMETER MERGED GEOPHYSICAL DATA RECORD GENERATION B native_id: PODAAC_MGDR processing_level: ~ publication_year: ~ release_dt: 2011-01-21T17:10:13 scale: ~ scope: ~ spatial_extent: ~ spatial_ref_sys: ~ spatial_res: ~ start_time: 1992-09-25T05:17:41 temporal_extent: ~ temporal_resolution: ~ type: dataset uri: /dataset/nasa-podaac_mgdr url: http://podaac.jpl.nasa.gov/dataset/PODAAC_MGDR variables: ~ version: ~ vertical_extent: ~ display_name: topex-poseidon/poseidon-1 href: http://52.38.26.42:8080/platform/topex-poseidon/instrument/poseidon-1.yaml instrument_identifier: poseidon-1 location: ~ parents: [] platform_identifier: topex-poseidon type: instrument_instance uri: /platform/topex-poseidon/instrument/poseidon-1