Enhanced-Resolution SSM/I and AMSR-E Daily Polar Brightness TemperaturesEntry ID: NSIDC-0464
Abstract: Notice to data users: The AMSR-E 89.0 GHz data provided here are currently at 12.5 km resolution, in 1441x1441 arrays. Updated, enhanced AMSR-E 89.0 GHz data will replace the 12.5 km data as soon as they become available.
This data set contains enhanced-resolution brightness temperatures produced using the Scatterometer Image Reconstruction (SIR) algorithm developed by the Microwave Earth Remote ... Sensing (MERS) group at Brigham Young University (BYU). Enhanced-resolution brightness temperature images for the Arctic and Antarctic were generated using antenna temperature data from the Special Sensor Microwave/Imager (SSM/I) and the Advanced Microwave Scanning Radiometer - Earth Observing System (AMSR-E) instrument. Daily SSM/I images are available for 1995 through 2008, and twice-daily AMSR-E images are available for 2002 through 2009. All available measurements for a single day are averaged into daily gridded files for three different equal-area spatial coverages: Northern Hemisphere, Southern Hemisphere, and full global. The spatial resolution is 12.5 km for SSM/I channels 19 and 22 GHz, 7.5 km for 37 GHz, and 2.5 km for the 85 GHz channel. For AMSR-E, the resolution is 12.5 km for the 6, 10, 18, and 23 GHz channels; 7.5 km for the 36 GHz channel; and 2.225 km for the 89 GHz channel. Software for reading the SIR-formatted SSM/I and AMSR-E data is also available. As scatterometer and radiometer data complement each other, these enhanced-resolution radiometer data, together with SIR format scatterometer data available from BYU, will facilitate polar research that combines information from both radiometers and scatterometers. Data are stored as scaled 2-byte integers in binary arrays with a 512-byte header and are available via FTP.
Data Set Citation
Dataset Originator/Creator: Long, David and Julienne Stroeve
Dataset Title: Enhanced-Resolution SSM/I and AMSR-E Daily Polar Brightness Temperatures
Dataset Release Date: 2011-08-11
Dataset Release Place: Boulder, Colorado U.S.A.
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Version: 1Online Resource: http://nsidc.org/data/nsidc-0464.html
Start Date: 1995-01-01Stop Date: 2008-12-31
Start Date: 2002-01-01Stop Date: 2009-01-01
Latitude Resolution: 7.5 km
Longitude Resolution: 7.5 km
Temporal Resolution: Twice-daily (AMSR-E)
ISO Topic Category
Quality Enhanced SSM/I brightness temperatures were produced without calibration changes from the Remote Sensing Systems (RSS) Version 6 (V6) SSM/I swath product for DMSP-F13. Enhanced AMSR-E brightness temperatures were produced, also without adjustments, from the RSS V4 AMSR-E swath product. For details regarding calibration and validation of these source products, please visit RSS.
Data Set Progress
Distribution Media: FTP
Distribution Size: 1.5 MB - 63 MB per file
Distribution Format: binary
Distribution Media: FTP
Distribution Size: 5 KB - 7 MB per file
Distribution Format: GIF
Email: long at ee.byu.edu
BYU Center for Remote Sensing Brigham Young University 459 Clyde Building
Province or State: UT
Postal Code: 84602
Email: stroeve at nsidc.org
CIRES National Snow and Ice Data Center National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
National Snow and Ice Data Center CIRES, 449 UCB University of Colorado
Province or State: CO
Postal Code: 80309-0449
Long, D. G., P. Hardin, and P. Whiting. 1993. Resolution Enhancement of Spaceborne Scatterometer Data. IEEE Trans. Geosci. Remote Sens. 31: 700-715.
Long, D. G. and D. Daum. 1998. Spatial Resolution Enhancement of SSM/I Data. IEEE Trans. Geosci. Rem. Sens. 36: 407-417.
Long, D. G., D. Early, and M. R. Drinkwater. 1994. Enhanced Resolution ERS-1 Scatterometer Imaging of Southern Hemisphere ... Polar Ice. Proc. Int. Geosci. Rem. Sens. Sym., Pasadena, California, 8-12 August, 156-158.
Long, D. G. and M. R. Drinkwater. 1999. Cryosphere Applications of NSCAT Data. IEEE Trans. Geosci. Remote Sens. 37 (3): 1671-1684.
Early, D. S. and D. G. Long. 2001. Image Reconstruction and Enhanced Resolution Imaging from Irregular Samples. IEEE Trans. Geosci. Remote Sens. 39 (2): 291-302.
Gunn, B. 2007. Temporal Resolution Enhancement for AMSR Images. MERS Technical Report 07-02, 04 Dec. 2007. www.scp.byu.edu/docs/pdf/MERS0702.pdf
Hollinger, J. P. and R. C. Lo. 1983. SSM/I Project Summary Report. Naval Research Laboratory. NRL Memorandum Report 5055. 106 pp.
Stroeve, J. 1998. Impact of Various Processing Options on SSM/I-Derived Brightness Temperatures. NSIDC Special Report-7. http://nsidc.org/pubs/special/7/index.html
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2010-04-16
Last DIF Revision Date: 2012-05-14