---
access_dt: ~
aliases:
  - context: datasetId
    lexicon: podaac
    term: PODAAC-QSBYU-ANBLT
    url: http://podaac.jpl.nasa.gov/ws/search/dataset?datasetId=PODAAC-QSBYU-ANBLT
  - context: dataset
    lexicon: podaac
    term: 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
attributes: ~
cite_metadata: ~
cited_by: []
contributors:
  - display_name: 'Data Archive : NASA JPL Physical Oceanography Distributed Active Archive Center '
    href: http://52.38.26.42:8080/contributor/3712.yaml
    id: 3712
    organization:
      country_code: US
      display_name: NASA JPL Physical Oceanography Distributed Active Archive Center
      identifier: physical-oceanography-distributed-active-archive-center
      name: NASA JPL Physical Oceanography Distributed Active Archive Center
      organization_type_identifier: federal
      type: organization
      url: http://podaac.jpl.nasa.gov
    organization_uri: /organization/physical-oceanography-distributed-active-archive-center
    person: {}
    person_id: ~
    person_uri: ~
    role_type_identifier: data_archive
    uri: /contributor/3712
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
files:
  - display_name: QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD.jpg
    file: 32/be/c622838effb43f17792b93a444de/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD.jpg
    href: http://data.globalchange.gov/assets/32/be/c622838effb43f17792b93a444de/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD.jpg
    identifier: 213a46df-abc3-405b-a687-65320586e421
    landing_page: http://podaac.jpl.nasa.gov/Podaac/thumbnails/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD.jpg
    location: ~
    mime_type: image/jpeg
    sha1: 26a404d4a59469798cd0a2a1d1442fd8f51ef761
    size: 15008
    thumbnail: 32/be/c622838effb43f17792b93a444de/.thumb-213a46df-abc3-405b-a687-65320586e421.png
    thumbnail_href: http://data.globalchange.gov/assets/32/be/c622838effb43f17792b93a444de/.thumb-213a46df-abc3-405b-a687-65320586e421.png
    type: file
    uri: /file/213a46df-abc3-405b-a687-65320586e421
    url: http://data.globalchange.gov/assets/32/be/c622838effb43f17792b93a444de/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LTOD.jpg
href: http://52.38.26.42:8080/dataset/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod.yaml
identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod
instrument_measurements:
  - dataset_identifier: nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod
    display_name: quick-scatterometer/seawinds/nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_ltod
    instrument_identifier: seawinds
    platform_identifier: quick-scatterometer
    type: instrument_measurement
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
parents: []
processing_level: ~
publication_year: ~
references: []
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: ~