NASA JPL Physical Oceanography Distributed Active Archive Center

nasa-podaac-qscat_byu_l3_ow_sigma0_antarctica_polar-stereographic_browse_maps_lite

SeaWinds on QuikSCAT Level 3 Sigma-0 Polar-Stereographic Browse Maps (Reduced) of Antarctica

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.

podaac.jpl.nasa.gov

http://podaac.jpl.nasa.gov/dataset/QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE

Identified by : QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE

This dataset was released on January 21, 2011.

The time range for this dataset is July 19, 1999 (18:39 PM) to November 21, 2009 (23:59 PM).

The spatial range for this dataset is -89.6° to -70° latitude, and 0° to 360° longitude. map (center)

This dataset uses data from an instance of the seawinds instrument on the quick-scatterometer platform.

Also known as :

• datasetId PODAAC-QSBYU-ANBML (podaac lexicon)
• dataset QSCAT_BYU_L3_OW_SIGMA0_ANTARCTICA_POLAR-STEREOGRAPHIC_BROWSE_MAPS_LITE (podaac lexicon)