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Thaw Depth and Vegetation Radiance Measurements, Happy Valley, AK, 1994


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.

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Additional information

  • 1.0 (2009-04-29)
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Related projects
Spatial Type grid
Frequency other
Language English
ISO Topic Categories
  • climatologyMeteorologyAtmosphere
GCMD Science Keywords Expand keywords
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Temporal coverage

Begin datetime 1994-06-06 00:00:00
End datetime 1994-07-17 23:59:59

Spatial coverage

Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 69.149, Minimum (South) Latitude: 69.141
Minimum (West) Longitude: -148.863, Maximum (East) Longitude: -148.84

Primary point of contact information

Walter C. Oechel <>

Additional contact information


Example citation following ESIP guidelines:

Oechel, W., et al. 2009. Thaw Depth and Vegetation Radiance Measurements, Happy Valley, AK, 1994. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 03 Dec 2020.

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