[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
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CLPX-Satellite: SSM/I Brightness Temperature Grids Entry ID: NSIDC-0144 |
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Summary
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Abstract:
This data set includes Defense Meteorological Satellite Program (DMSP) F-13 passive microwave brightness temperatures gridded to the geographic (lat/long) and UTM grids of the Cold Land Processes Field Experiment (CLPX) Large Regional Study Area (LRSA). Data are provided for passive microwave frequencies at 19, 22, 37 and 85 GHz, separated by ascending and descending satellite passes, and include time files. Grid resolution is 25 km, which approximates the sampling resolution of the original swath data. Backus-Gilbert optimal interpolation is used to artificially increase (16 times) the density of brightness temperature measurements in the satellite swath reference frame. This process uses actual antenna patterns to create the oversampled array, and the net effect is as if the additional samples had been made by the satellite radiometer itself, i.e., the beam patterns and spatial resolutions of the interpolated data approximate those of the original samples. This method is based on the earlier work of Galantowicz and England (1991) and Poe (1990). Please see the documentation for the global version of this data set for complete details. Please see the documentation for the global version of this data set at http://nsidc.org/data/nsidc-0032.html for complete details. Several things about this data set that are different: 1) Temporal coverage is limited to 1 February - 31 March 2002 and 1 February - 31 March 2003. 2) The projection/grid is not EASE-Grid, it is CLPX lrsa_geo720.0 and lrsa_utm25000. However, interpolation is Backus-Gilbert, so all the benefits of this interpolation are shared with the global data set. 3) Filenames are different. 4) CLPX grid dimensions are: GEO720.0: 23 cols by 18 rows UTM25000: 17 cols by 17 rows 5) Grid resolution for CLPX is limited to the CLPX grids that approximate 25 km.
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Link:
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Geographic Coverage
| N: 42.0 | S: 38.5 | E: -104.0 | W: -108.5 |
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Data Set Citation
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Dataset Originator/Creator:
M.J. Brodzik
Dataset Title: CLPX-Satellite: SSM/I Brightness Temperature Grids Dataset Release Date: 2003-11-01 Dataset Release Place: Boulder, CO, USA Dataset Publisher: National Snow and Ice Data Center (NSIDC) Online Resource: http://nsidc.org/data/nsidc-0144 |
Temporal Coverage
| Start Date: 2002-02-01 |
| Stop Date: 2002-05-31 |
| Start Date: 2003-02-01 |
| Stop Date: 2003-05-31 |
Location Keywords
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CONTINENT
> NORTH AMERICA
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > COLORADO CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > WYOMING |
Data Resolution
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Latitude Resolution:
UTM25000: 25000m
Longitude Resolution: UTM25000: 25000m |
Science Keywords
| SPECTRAL/ENGINEERING >MICROWAVE >BRIGHTNESS TEMPERATURE [Definition] |
| SPECTRAL/ENGINEERING >MICROWAVE >MICROWAVE IMAGERY [Definition] |
| SPECTRAL/ENGINEERING >MICROWAVE >MICROWAVE RADIANCE [Definition] |
ISO Topic Category
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IMAGERY/BASE MAPS/EARTH COVER
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Platform
| DMSP 5D-2/F13 >Defense Meteorological Satellite Program-F13 [Information] |
Instrument
| SSMI >Special Sensor Microwave/Imager [Information] |
Project
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| CLPX >Cold Land Processes Field Experiment [Information] |
Quality
| High. The resampled data uses all available information about the radiomenter antenna pattern to interpolated a brightness temperature as if the radiometer itself were pointing to the center of each gridded cell. |
Access Constraints
| None. |
Use Constraints
| None. |
Keywords
| Passive Microwave |
| Passive Microwave Brightness Temperatures |
| Passive Microwave Data |
| Passive Microwave Radiation |
Data Set Progress
| IN WORK |
Data Center
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NSIDC Distributed Active Archive Center
[Information]
Data Center URL: http://nsidc.org/daac/index.html Dataset ID: NSIDC-0144
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National Snow and Ice Data Center
[Information]
Data Center URL: http://nsidc.org Dataset ID: NSIDC-0144
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Distribution
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Distribution_Media:
ftp
Distribution_Size: 30 MB (uncompressed), 2.3 MB (compressed) Distribution_Format: binary Fees: n/a |
Personnel
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MARY
J.
BRODZIK 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 |
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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
Armstrong, R.L., K.W. Knowles, M.J. Brodzik and M.A. Hardman. 1994, updated 2003. DMSP SSM/I Pathfinder daily EASE-Grid brightness temperatures. Boulder, CO: National Snow and Ice Data Center. Digital media and CD-ROM.
Galantowicz, J.F., England, A. W. 1991. The Michigan Earth Grid: Description, Registration Method for SSM/I Data, and Derivative Map Projections. Radiation Laboratory, Department of Electrical Engineering and Computer Science, Technical Report 027396-2-T. University of Michigan, Ann Arbor.
Galantowicz, J.F. 1995.Microwave Radiometry of Snow-Covered Grasslands for the Estimation of Land-Atmosphere Energy and Moisture Fluxes. PhD Thesis, Department of Electrical Engineering and Computer Science and Department of Atmospheric, Oceanic, and Space Sciences. University of Michigan, Ann Arbor.
Poe, G. A. 1990. Optimum interpolation of imaging microwave radiometer data. IEEE Trans. Geosci. Remote Sensing GE-28:800-810.
Stogryn, A. 1978. Estimates of brightness temperatures from scanning radiometer data. IEEE Trans. Antennas Propagat. AP-26:720-726.
Wentz, F. J. 1993. User's Manual SSM/I Antenna Temperature Tapes, Revision 2. Remote Sensing Systems Technical Report 120193. Santa Rosa, CA. 13 p.
Galantowicz, J.F., England, A. W. 1991. The Michigan Earth Grid: Description, Registration Method for SSM/I Data, and Derivative Map Projections. Radiation Laboratory, Department of Electrical Engineering and Computer Science, Technical Report 027396-2-T. University of Michigan, Ann Arbor.
Galantowicz, J.F. 1995.Microwave Radiometry of Snow-Covered Grasslands for the Estimation of Land-Atmosphere Energy and Moisture Fluxes. PhD Thesis, Department of Electrical Engineering and Computer Science and Department of Atmospheric, Oceanic, and Space Sciences. University of Michigan, Ann Arbor.
Poe, G. A. 1990. Optimum interpolation of imaging microwave radiometer data. IEEE Trans. Geosci. Remote Sensing GE-28:800-810.
Stogryn, A. 1978. Estimates of brightness temperatures from scanning radiometer data. IEEE Trans. Antennas Propagat. AP-26:720-726.
Wentz, F. J. 1993. User's Manual SSM/I Antenna Temperature Tapes, Revision 2. Remote Sensing Systems Technical Report 120193. Santa Rosa, CA. 13 p.
Creation and Review Dates
DIF Creation Date:
2003-12-28
Last DIF Revision Date:
2012-05-14
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