Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures
Entry ID:
NSIDC-0071
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Summary
Abstract:
This data set consists of brightness temperatures acquired from the Scanning Multichannel Microwave Radiometer (SMMR) on board the Nimbus-7 Pathfinder satellite. The brightness temperatures have been gridded onto the Equal-Area Scalable Earth Grid (EASE-Grid) and are presented in three different projections: Northern Hemisphere, Southern Hemisphere, and global. The SMMR EASE-Grid data were derived ... from SMMR brightness temperatures in swath format (level 1b data). Coverage is global, and data are available from 25 October 1978 through 20 August 1987. The spatial resolution is 25 km for all channels (6.6, 10.7, 18, 21, and 37 GHz for both vertical and horizontal polarizations). Both brightness temperatures and time files are provided for a given projection in flat binary format for each day. The brightness temperatures are provided in tenths of kelvins and the time files are in minutes since 0:00 Coordinated Universal Time (UTC) of the date of the enclosing file. Data are available via FTP. Users may also order data on CD-ROM while supplies last. 
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Description:
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Geographic Coverage
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Spatial coordinates
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N: 90.0
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S: -90.0
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E: 180.0
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W: -180.0
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Data Set Citation
Dataset Originator/Creator:
K. W. Knowles, Eni Njoku, R. L. Armstrong, and M. J. Brodzik
Dataset Title:
Nimbus-7 SMMR Pathfinder Daily EASE-Grid Brightness Temperatures
Dataset Release Date:
2000-01-01
Dataset Release Place:
Boulder, Colorado USA
Dataset Publisher:
National Snow and Ice Data Center (NSIDC)
Data Presentation Form:
Remote sensing image
Online Resource:
http://nsidc.org/data/nsidc-0071.html
Temporal Coverage
Start Date:
1978-10-25
Stop Date:
1987-08-20
Data Resolution
Latitude Resolution:
25 km
Longitude Resolution:
25 km
Quality
Quality indicator flags were provided in the level 1b data for the scan status word of each scan. These flags indicated conditions in the original data or in the data processing that may have given rise to reduced-quality calibrated output. None of these data were eliminated from the gridded product
Data Set Progress
COMPLETE
Distribution
Distribution Media:
CD-ROM
Distribution Size:
83 MB per day
Distribution Format:
binary
Distribution Media:
FTP
Distribution Size:
83 MB per day
Distribution Format:
binary
Personnel
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
Role:
INVESTIGATOR
Phone:
303-492-6199
Fax:
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
Role:
INVESTIGATOR
Email:
brodzik 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
Role:
INVESTIGATOR
Phone:
+1 (303)-492-6199
Fax:
+1 (303)-492-2468
Email:
rlax at nsidc.org
Contact Address:
National Snow and Ice Data Center
CIRES 449 UCB
University of Colorado
City:
Boulder
Province or State:
Colorado
Postal Code:
80309-0449
Country:
USA
Role:
INVESTIGATOR
Phone:
818-354-3693
Email:
njoku at lor.jpl.nasa.gov
Contact Address:
M/S 300-233
Jet Propulsion Laboratory
California Institute of Technology
4800 Oak Grove Drive
City:
Pasadena
Province or State:
CA
Postal Code:
91109-8099
Country:
USA
Publications/References
Brodzik, M. J. 1998. The EASE-Grid, A Versatile Set of Equal-Area Projections and Grids. Special report to the National Snow and Ice Data Center, Boulder, CO. Frances, E. A. 1987. Calibration of the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) 1979-1984. Master's Thesis, College of Oceanography, Oregon State University, Corvallis, OR. Fu, C. C., D. Han, S. T. Kim, and P. ... Gloersen. 1988. User's Guide for the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR) CELL-ALL tape. NASA Reference Publication #1210, National Aeronautics and Space Administration, Washington, D.C.
Gloersen, P., W. J. Campbell, D. J. Cavalieri, J. C. Comiso, C. L. Parkinson, and H. J. Zwally. 1992. Arctic and Antarctic Sea Ice, 1978-1987: Satellite Passive Microwave Observations and Analysis. NASA Special Publication SP-511. National Aeronautics and Space Administration. Washington, D.C.
Gloersen, P. 1987. In-orbit Calibration Adjustment of the Nimbus-7 SMMR. NASA Technical Memorandum #100678, National Aeronautics and Space Administration. Washington, D.C.
Gloersen, P., D. J. Cavalieri, A. T. C. Chang, T. T. Wilheit, W. J. Campbell, O. M. Johannessen, K. B. Katsaros, K. F. Kunzi, D. B. Ross, D. Staelin, E. P. L. Windsor, F. T. Barath, P. Gudmansen, E. Langham, and R. Ramseier. 1984. A Summary of Results from the First Nimbus-G SMMR Observations. Journal of Geophysical Research 89:5335-44.
Gloersen, P. and F. T. Barath. 1977. A Scanning Multichannel Microwave Radiometer for Nimbus-7 and Seasat-A. IEEE Journal of Oceanic Engineering OE-2:172-178.
Hofer, R. and E. G. Njoku. 1981. Regression Techniques for Oceanographic Parameter Retrievals Using Spaceborne Microwave Radiometry. IEEE Transactions on Geoscience and Remote Sensing GE-19:178-89.
Knowles, Kenneth W. 1993. Points, Pixels, Grids, and Cells: A Mapping and Gridding Primer. Special report to the National Snow and Ice Data Center, Boulder, CO.
Liu, W. T. and D. R. Mock. 1986. Evaluation of Geophysical Parameters Measured by the Nimbus-7 Microwav
e Radiometer for the TOGA Heat Exchange Project. JPL Publication 86-50, Jet Propulsion Laboratory, Pasadena, CA.
Madrid, C. R. (Ed.). 1978. The Nimbus 7 User's Guide. Landsat/Nimbus Project, Goddard Space Flight Center, Greenbelt, MD.
McMillan, D. S. and D. Han. 1990. Long-term Trends and Instrument Warm-up Effects in Nimbus-7 Scanning Multichannel Microwave Radiometer Radiances. (Unpublished Document), NASA Goddard Space Flight Center, Greenbelt, MD.
Milman, A. S. and T. T. Wilheit. 1985. Sea Surface Temperatures from the Scanning Multichannel Microwave Radiometer on Nimbus-7. Journal of Geophysical Research 90:11631-41.
Njoku, E. G., B. Rague, and K. Fleming. 1998. Nimbus-7 SMMR Pathfinder Brightness Temperature Data. JPL Publication 98-4. Jet Propulsion Laboratory. Pasadena, CA.
Njoku, E. G. 1980. Antenna Pattern Correction Procedures for the Scanning Multichannel Microwave Radiometer (SMMR). Boundary-Layer Meteorology 18:79-98.
Njoku, E. G., J. M. Stacey, and F. T. Barath. 1980. The Seasat Scanning Multichannel Microwave Radiometer (SMMR): Instrument Description and Performance. IEEE Journal of Oceanic Engineering OE-5:125-37.
Swanson, P. N. and A. L. Riley. 1980. The Seasat Scanning Multichannel Microwave Radiometer (SMMR): Radiometric Calibration Algorithm Development and Performance. IEEE Journal of Oceanic Engineering OE-5:116-24.
Systems and Applied Sciences Corporation. 1982. User's Guide for the Scanning Multichannel Microwave Radiometer Instrument First-Year Antenna Temperature Data Set. SASC, Contractor Report #NAS5-27393. Goddard Space Flight Center. Greenbelt, MD.
Wentz, F. J. and E. A. Frances. 1992. Nimbus-7 SMMR Ocean Products 1979-1984. RSS Technical Report 033192. Remote Sensing Systems. Santa Rosa, CA.
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date:
1999-02-01
Last DIF Revision Date:
2012-05-14
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