Thaw Depth and Vegetation Radiance Measurements, Happy Valley, AK, 1994
Entry ID: ARCSS103

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Abstract: This data set contains measurements for permafrost active layer thaw depth and vegetation reflectance (red and near-infrared bandwidths) at the Happy Valley Flux Study Site in northern Alaska during the summer of 1994. Sampling was conducted in a 1000-m square grid pattern, with sample points spaced 100 m apart. Median values for thaw depths were determined from five replicate measurements using a thaw probe. Vegetation radiance values are averages of five measurements collected from an area approximately 5 square meters at each grid point. Radiometric measurements were collected with Exotech-100BX, 4-channel radiometers fit with spectral filters corresponding to the SPOT/HRV-XS satellite bandwidths.
Related URL
Description: data ftp site

Description: access to data and documentation
Geographic Coverage
Spatial coordinates   
  N: 69.15   S: 69.14   E: -148.84   W: -148.86
Min Depth: 1 CM Max Depth: 64 CM

Data Set Citation
Dataset Originator/Creator: Walter C. Oechel
Dataset Title: Thaw Depth and Vegetation Radiance Measurements, Happy Valley, AK, 1994
Dataset Release Date: 2003-01-01
Dataset Release Place: Boulder, CO, U.S.A.
Dataset Publisher: National Snow and Ice Data Center (NSIDC)
Data Presentation Form: tables
Online Resource:
Temporal Coverage
Start Date: 1994-06-06
Stop Date: 1994-07-17
Data Resolution
Vertical Resolution: 1 cm
Data Set Progress
Originating Center
Data Center
National Snow and Ice Data Center Supplemental Info
Data Center URL:
Dataset ID: ARCSS103

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: 2.5 - 4 KB
Distribution Format: comma-delimited text files
Phone: (619) 594-4818 x6613
Email: oechel at
Contact Address:
San Diego State University
Department of Biology
Global Change Research Group
5500 Campanile Drive
City: San Diego
Province or State: CA
Postal Code: 92182-0001
Country: USA
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Hope A.S., Fleming J.B., Vourlitis G.L., Stow D.A., Oechel W.C., and T. Hack. 1995. Relating CO2 fluxes to spectral vegetation indices in tundra landscapes: Importance of footprint definition. Polar Record 31: 245-250.

Hope A.S., McMichael C.E., Stow D.A., Fleming J.B., Vourlitis G., Oechel W.C., and S. Hastings. 1995. Direct estimates of CO2 flux in arctic environments using a spectral ... View entire text
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Creation and Review Dates
DIF Creation Date: 2002-10-30
Last DIF Revision Date: 2012-05-11
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