SEASAT-A Scatterometer Level 3 Sigma-0 at Enhanced Resolution (BYU)
SHARE THIS PAGE
Please contact us if there are any discrepancies or inaccuracies found below.
DOI10.5067/SASSX-L2SN0
Short NameSEASAT_BYU_L3_OW_SIGMA0_ENHANCED
DescriptionThis SEASAT-A Scatterometer (SASS) Sigma-0 dataset is generated by the Scatterometer Climate Record Pathfinder (SCP) project at Brigham Young University (BYU) and is generated using a Scatterometer Image Reconstruction (SIR) technique developed by Dr. David Long. This dataset is derived from the SASS Geophysical Data Record (GDR). The SIR technique results in an enhanced resolution image reconstruction and gridded on an equal-area grid (for non-polar regions) at 4.45 km pixel resolution stored in SIR files; polar regions are gridded using a polar-stereographic technique. A non-enhanced version is provided at 22.25 km pixel resolution in a format known as GRD files. All files are produced in IEEE formatted binary. All data files are separated and organized by region, polarization, parameter, and sampling technique (i.e., SIR vs. GRD). The regions of China and Japan are combined into a single region. In addition to Sigma-0, various statistical parameters are provided for added guidance, including but not limited to: standard deviation, measurement counts, pixel time, Sigma-0 error, and average incidence angle. For more information, please visit: http://www.scp.byu.edu/docs/SASS_user_notes.html
Version1
Dataset TypeOPEN
MeasurementCRYOSPHERE > SEA ICE > ICE EXTENT
SPECTRAL/ENGINEERING > RADAR > SIGMA NAUGHT > NORMALIZED RADAR CROSS-SECTION
Processing Level3
CoverageRegion: North America
Region: North Africa
Region: South America
Region: Europe
Region: China
Region: Australia
Region: Alaska
Region: Arctic
Region: Bering Sea
Region: Central America
Region: Japan
Region: Siberia
Region: Greenland
Region: Southern Asia
Region: Antarctica
Region: Indonesia
Region: South Africa
Northernmost Latitude: 78.3 degrees
Southernmost Latitude: -78.3 degrees
Westernmost Longitude: -180 degrees
Easternmost Longitude: 180 degrees
Time Span: 1978-Jul-07 to 1978-Oct-10
ResolutionSpatial Resolution: 0.04 degrees (Latitude) x 0.04 degrees (Longitude)
Temporal Resolution: 12 Hour
ProjectionType: Gridded
Detail: Equal-Area and Polar-Stereographic
Ellipsoid: WGS 84
Latency hours
Platform/Sensor
SEASAT-A
Platform
Name: SEASAT-A (SEASAT-A)
Orbit Period: 100.7 minutes
Inclination Angle: 108 degrees
Ascending Node: 1970-Jan-01 00:00:00
/
SASS
SENSOR
Name: Seasat-A Scatterometer System (SASS)
Swath Width: 1900 km
Description: The Seasat-A Satellite Scatterometer (SASS) contains four dual-polarized (both vertical and horizontal) fan-beam radar antennas, which were designed to produce an X-shaped scanning pattern across Earth's surface. The SASS radar was designed to transmit at a frequency of 14.6 GHz (Ku-band). SASS provided 95% global coverage every 36 hours at a sampling footprint of approximately 50 km within a 1900 km-wide swath. SASS was designed to measure radar backscatter sensitive to wind speeds from 4-26 m s-1 referenced to 10 meters above the ocean surface. SASS was intended to be accurate to within 2 m s-1 or 10% (whichever is greater) of the observed wind speed and within 20¿ of the observed wind direction.

ProjectScatterometry Climate Record Pathfinder (SCP)
Data ProviderCreator: BYU/SCP
Release Place: PO.DAAC
Release Date: 2002-Apr-23
Resource: https://podaac-tools.jpl.nasa.gov/drive/files/allData/seasat/L3/byu_scp/sigma0enhanced/docs/dLongSass.html
Persistent IDPODAAC-SASSX-BYSN0
Questions related to this dataset? Contact podaac@podaac.jpl.nasa.gov
Citation BYU/SCP. 2002. SEASAT-A Scatterometer Level 3 Sigma-0 at Enhanced Resolution (BYU). Ver. 1. PO.DAAC, CA, USA. Dataset accessed [YYYY-MM-DD] at https://doi.org/10.5067/SASSX-L2SN0.

Download Citation
RIS XML JSON-LD

For more information see Data Citations and Acknowledgments.

Journal Reference Early, D. S. and D. G. Long, 2001: Image Reconstruction and Enhanced Resolution Imaging From Irregular Samples. IEEE Transactions on Geoscience and Remote Sensing, Vol. 39, No.2, pp. 291-302.