Created: 2013-12-27 16:18:31
Modified: 2014-02-03 13:08:07
DESCRIPTION OF AREA CONTAINING SITE:
This grid occupies the flanks of a bedrock-cored hill adjacent to Toolik Lake. Moist acidic tundra has developed atop glacial tills. Vegetation and soils vary with slope, aspect, and drainage, and are discontinuous (Hinkel & Nelson, 2003).
SAMPLING DESIGN AND METHOD:
1-sq km grid consists of a square array of surveyed permanent stakes separated by 100 m, yielding an 11 × 11 array of sampling nodes on each grid. Thaw depth and snow sampling was conducted twice by manual probing at each stake. The two values for each sampling point are averaged, yielding a maximum of 121 data points per grid per probing date. The active layer was not measured at locations where grid points intersect rocks or deep water.
The soil climate station was established in September of 1998 and is located near Toolik Lake, Alaska, at the University of Alaska/National Science Foundation Research camp. The station is located within the 1 km CALM u12A grid. The elevation is about 759 m (2490 ft). This station monitors air temperature, precipitation, soil temperature at various depths to a maximum of 120 cm, and soil water contents at 9, 12, 38, 39, and 68 cm depths. Measurements are made at 20-minute intervals and averaged and recorded every hour.
Soil temperature and soil moisture metadata and data are also available at http://soils.usda.gov/survey/scan/alaska/Toolik/
CALM USA George Washington University
Do we have wrong or old data? Let us know via Email
Designed & hosted by Arctic Portal