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Data Set ID:
NSIDC-0148

CLPX-Satellite: EO-1 Hyperion Surface Reflectance, Snow-Covered Area, and Grain Size, Version 1

This data set consists of apparent surface reflectance, subpixel snow-covered area, and grain size collected from the Hyperion hyperspectral imager. The Hyperion imager has a spectral range of 400-2500 nm, a spectral resolution of 10 nm, spatial resolution of 30 m, and a swath width of 7.8 km. Sampling is scene based (256 samples, 512 lines).

Geographic Coverage

Parameter(s):
  • Snow/Ice > Snow Cover > Grain Size
  • Surface Radiative Properties > Reflectance
  • Snow/Ice > Snow Cover > Snow-Covered Area
Spatial Coverage:
  • N: 40.3, S: 39.6, E: -105.7, W: -106

Spatial Resolution: Not Specified
Temporal Coverage:
  • 15 February 2002
  • 19 March 2002
Temporal Resolution: Not specified
Data Format(s):
  • Binary
Platform(s) EO-1
Sensor(s): HYPERION
Version: V1
Data Contributor(s): Thomas Painter
Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Painter, T. 2006. CLPX-Satellite: EO-1 Hyperion Surface Reflectance, Snow-Covered Area, and Grain Size, Version 1. [Indicate subset used]. Boulder, Colorado USA. NASA National Snow and Ice Data Center Distributed Active Archive Center. doi: http://dx.doi.org/10.5067/J5U800GIBU78. [Date Accessed].

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Detailed Data Description

CAUTIONARY NOTE: These data have not been reviewed for quality. Known issues exist in the processing of these data. Until this disclaimer has been removed, users should send questions and comments about this data set to nsidc@nsidc.org. NSIDC will forward these inquiries to the PI for resolution.

Hyperion data have the following characteristics:

  • Spectral range: 400-2500 nm
  • Spectral resolution: 10 nm
  • Spatial resolution: 30 m
  • Swath width: 7.8 km
  • Processing level: apparent surface reflectance, subpixel snow-covered area and grain size
  • Sampling: scene based (256 samples, 512 lines)
  • Temporal coverage: 15 February 2002 and 19 March 2002
  • Spatial coverage: 39.60N, 106.00W to 40.30N, 105.70W
Format

Apparent surface reflectance: binary, short integer
Subpixel snow-covered area: binary, floating point (data range ν [0,1])
Subpixel snow grain radius: binary, floating point (data range ν [0, 1100 micrometers])

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File and Directory Structure

The data consist of fourteen binary ENVI files in a single directory. Seven files each for the two dates that measurements were taken.

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File Naming Convention

The following codes are used in the seven diferent files:

  • All file names begin with the date of collection of the form yyyymmdd.
  • Reflectance files have an ".out" extension and their header files have an ".out.hdr" extension.
  • Band-interleaved files have a .bip extension.
  • Snow-cover area files include "snow" in the file name.
  • Snow grain files include "grnsz" in the file name.
  • Rock-cover area files include "rock" in the file name.
  • Vegitation-cover area files include "veg" in the file name.
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File Size

Apparent surface reflectance: 608 Mb
Products (snow covered area, grain size): 6 Mb

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Volume

Total data set volume is 724 MB.

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Spatial Coverage

Southernmost Latitude: 39.60 N 
Northernmost Latitude: 40.30 N 
Westernmost Longitude: 106.00 W 
Easternmost Longitude: 105.70 W

Spatial Resolution

Spatial resolution is 30 m.

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Temporal Coverage

Hyperion measurements were made on 15 February 2002 and 19 March 2002.

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Parameter or Variable

Parameter Description

Hyperion measures apparent surface reflectance, subpixel snow-covered area, and grain size.

For a complete description of parameters and measurements, please refer to the Measurements section of the CLPX Plan.

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Software and Tools

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Data Acquisition and Processing

For complete information about data acquisition and processing, please see the Cold Land Processes Field Experiment (CLPX) Plan Web Site.

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References and Related Publications

Contacts and Acknowledgments

Thomas H. Painter
CIRES/National Snow and Ice Data Center
University of Colorado
Boulder, CO 80309-0216

Document Information

DOCUMENT CREATION DATE

13 April 2006

No technical references available for this data set.
No FAQs or How Tos available for this data set.

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