Service Interruption

The NSIDC Web site and data services are currently having intermittent problems and may be unavailable. We are working to restore these services as soon as possible and apologize for any inconvenience this may cause. Please contact NSIDC User Services for assistance.

BYU High Resolution Images of NSCAT Sigma0 Measurements

View Catalog Page

Entry ID



The NASA scatterometer (NSCAT) provided normalized radar cross section (sigma0) measurements of the Earth's surface. While originally designed for wind observation, scatterometer sigma0 measurements have proven useful in a variety of land and ice studies. To aid in the application of these measurements, Brigham Young University (BYU) has prepared this dataset consisting of enhanced resolution images generated from NSCAT sigma0 measurements.

This data set contains images from 16 regions around the globe. Images are made from NSCAT Level 1.5 data (geo-located sigma0 cells) and processed using the BYU SIRF algorithm. To produce the highest possible spatial resolution as well as to ensure full coverage over the images, multiple orbit passes are combined. This data set also contains ASCII ice extent files from the Arctic and the Antarctic. The study period was from 15 September 1996 to 26 June 1997.

The parameters provided in the images include polarization, geographical region, time span, image type, and reconstruction technique. These data are available via FTP.

Geographic Coverage


Spatial Coordinates:
N: 90°     S: -90°     E: 180°     W: -180°    

Data Set Citation

Dataset Creator: David G. Long
Dataset Title: BYU High Resolution Images of NSCAT Sigma0 Measurements
Dataset Release Date: 2005-01-26
Dataset Release Place: Pasadena, California USA
Dataset Publisher: JPL: Jet Propulsion Laboratory
Online Resource:

Temporal Coverage

Start Date: 1996-09-15
Stop Date: 1997-06-26

Data Resolution

Latitude Resolution: 22.25 km
Longitude Resolution: 22.25 km
Temporal Resolution: 6 days to 12 days

Latitude Resolution: 4.45 km
Longitude Resolution: 4.45 km
Temporal Resolution: 6 days to 12 days

Location Keywords


Science Keywords

  • Cryosphere Snow/Ice Ice Extent
  • Cryosphere Snow/Ice Ice Extent
  • Spectral/Engineering Radar Radar Backscatter
  • Spectral/Engineering Radar Radar Backscatter
  • Spectral/Engineering Radar Sigma Naught
  • Spectral/Engineering Radar Sigma Naught
  • Terrestrial Hydrosphere Snow/Ice Ice Extent
  • Terrestrial Hydrosphere Snow/Ice Ice Extent





Data Center

National Snow and Ice Data Center
Data Center URL:

Data Center Personnel

Name: NSIDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Contact Address:

  • National Snow and Ice Data Center
  • CIRES, 449 UCB
  • University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA


Distribution Media: FTP
Distribution Format: SIR


David G. Long
Contact Address:

  • Brigham Young University
  • Microwave Earth Remote Sensing (MERS) Laboratory
  • 459 Clyde Building

City: Provo
Province or State: UT
Postal Code: 84602
Country: USA

Related URL

Data set description

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2005-01-26
Last DIF Revision Date: 2012-07-12

Metadata Views

DIF Text-Only

Directory Interchange Format (DIF) in plain text


Directory Interchange Format (DIF) in Extensible Markup Language (XML)


U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)


International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata

Back to Top