CLPX-Satellite: AVHRR/HRPT Brightness Temperatures and Reflectances
Entry ID: NSIDC-0152

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Abstract: This data set includes AVHRR/HRPT (Advanced Very High Resolution Radiometer/High Resolution Picture Transmission) brightness temperatures and reflectances over the NASA Cold Land Processes Field Experiment (CLPX) Large Regional Study Area (LRSA) (NW corner: 42°N, 108.5°W, SE corner: 38.5°N 104°W). Data are gridded to the LRSA at 1.1 km (or 30 arc-second) resolution. Data were collected between November 2001 and May 2003. Reflectance files contain flat binary rasters of 2-byte unsigned integers representing albedo. The brightness temperature files contain 2-byte unsigned integers representing interpolated temperatures in tenths of degrees Kelvin.
Related URL
Description: CLPX Site

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Geographic Coverage
Spatial coordinates   
  N: 42.05   S: 38.45   E: -103.95   W: -108.55

Data Set Citation
Dataset Originator/Creator: Cline, D.
Dataset Title: CLPX-Satellite: AVHRR/HRPT Brightness Temperatures and Reflectances
Dataset Release Date: 2004-02-01
Dataset Release Place: Boulder, Colorado USA
Dataset Publisher: NSIDC DAAC: NASA DAAC at the National Snow and Ice Data Center
Version: 1
Online Resource:
Temporal Coverage
Start Date: 2001-11-09
Stop Date: 2003-06-26
Quality The AVHRR sensor was designed to view cold space and one or more internal warm blackbodies for each scan sequence while in orbit. In general, radiometric calibration involves exposing a radiometer to sources of radiation that have been calibrated against primary or secondary standards and determining a relationship between the output of the radiometer and the intensity of the incident radiation ... View entire text
Access Constraints None
Use Constraints Please acknowledgement the U.S. Geological Survey in products derived from these data.
Data Set Progress
Data Center
NSIDC Distributed Active Archive Center Supplemental Info
Data Center URL:

Data Center Personnel
Phone: +1 (303) 492-6199
Fax: +1 (303) 492-2468
Email: nsidc at
Contact Address:
National Snow and Ice Data Center
University of Colorado
City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA
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Distribution Media: FTP
Distribution Size: 4.6 - 4.85 KB
Distribution Format: Binary

Distribution Media: FTP
Distribution Size: 4.6 - 4.85 KB
Distribution Format: Geographic Tagged Image File Format (GeoTIFF) (.geotiff)
Phone: 952 361 6610 x252
Fax: 952 361 6634
Email: cline at
Contact Address:
National Weather Service
National Operational Hydrologic Remote Sensing Center
1735 Lake Drive W.
City: Chanhassen
Province or State: MN
Postal Code: 55317
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2004-02-01
Last DIF Revision Date: 2014-07-07
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