[Keyword='DAILY DATA']
Enhanced-Resolution SSM/I and AMSR-E Daily Polar Brightness Temperatures
 Entry ID: NSIDC-0464

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Summary
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.

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Link: GET DATA > ECHO
Description: Refine your granule search with ECHO's next generation Earth Science discovery tool (Reverb) using information from this record.


Link: VIEW RELATED INFORMATION
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Description: DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures


Link: VIEW RELATED INFORMATION
Description: Near-Real-Time DMSP SSM/I-SSMIS Pathfinder Daily EASE-Grid Brightness Temperatures


Link: VIEW RELATED INFORMATION
Description: SSM/I Brightness Temperature and Sea Ice Concentration Grids: Frequently Asked Questions (FAQs)


Geographic Coverage
 N: -39.0 S: -90.0  E: 180.0  W: -180.0
 N: 90.0 S: 30.0  E: 180.0  W: -180.0

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: 1
Online Resource: http://nsidc.org/data/nsidc-0464.html


Temporal Coverage
Start Date: 1995-01-01
Stop Date: 2008-12-31

Start Date: 2002-01-01
Stop Date: 2009-01-01


Location Keywords
OCEAN > ARCTIC OCEAN > BAFFIN BAY
OCEAN > ARCTIC OCEAN > BEAUFORT SEA
OCEAN > ARCTIC OCEAN > CHUKCHI SEA
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GREENLAND SEA
OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA
CONTINENT > NORTH AMERICA > CANADA > HUDSON BAY
OCEAN > SOUTHERN OCEAN > AMUNDSEN SEA
GEOGRAPHIC REGION > ARCTIC
GEOGRAPHIC REGION > POLAR


Data Resolution
Latitude Resolution: 7.5 km
Longitude Resolution: 7.5 km
Temporal Resolution: Twice-daily (AMSR-E)


Science Keywords
SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Platform
DMSP 5D-2/F13 >Defense Meteorological Satellite Program-F13    [Information]
AQUA >Earth Observing System, AQUA    [Information]


Instrument
SSMI >Special Sensor Microwave/Imager    [Information]
AMSR-E >Advanced Microwave Scanning Radiometer-EOS    [Information]


Project
EOSDIS >Earth Observing System Data Information System    [Information]
ESIP >Earth Science Information Partners Program    [Information]


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.


Keywords
Antarctic
Arctic
Daily Data
EASE-Grid
EOSDIS
Gridded Data
NSIDC DAAC
Passive Microwave
Polar
Remote Sensing


Data Set Progress
COMPLETE


Originating Center
NSIDC_DAAC


Data Center
NSIDC Distributed Active Archive Center    [Information]
Data Center URL: http://nsidc.org/daac/index.html
Dataset ID: NSIDC-0464

Data Center Personnel
Name: NSIDC USER SERVICES
 Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
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


National Snow and Ice Data Center    [Information]
Data Center URL: http://nsidc.org
Dataset ID: NSIDC-0464

Data Center Personnel
Name: NSIDC USER SERVICES
 Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
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
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


Personnel
DAVID G. LONG
Role: INVESTIGATOR
Phone: 801-422-4383
Fax: 801-422-0201
Email: long at ee.byu.edu
Contact Address:
BYU Center for Remote Sensing
Brigham Young University
459 Clyde Building
City: Provo
Province or State: UT
Postal Code: 84602
Country: USA


JULIENNE STROEVE
Role: INVESTIGATOR
Email: stroeve at nsidc.org
Contact Address:
CIRES
National Snow and Ice Data Center
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309


NSIDC USER SERVICES
Role: TECHNICAL CONTACT
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at nsidc.org
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


Publications/References
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

Creation and Review Dates
DIF Creation Date: 2010-04-16
Last DIF Revision Date: 2012-05-14

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