ARCSS166 Time Series of Seasonally Frozen Ground Depth in the Russian Arctic, 1930-1990 Tingjun Zhang Time Series of Seasonally Frozen Ground Depth in the Russian Arctic, 1930-1990 2006-05-25 Boulder, Colorado USA NSIDC: National Snow and Ice Data Center http://nsidc.org/data/arcss166.html Investigator Tingjun Z Zhang nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2359 x

University of Colorado

National Snow and Ice Data Center/World Data Center for Glaciology

UCB449

Boulder Colorado 80309-0449 USA Investigator R. G. Barry

University of Colorado

National Snow and Ice Data Center/World Data Center for Glaciology

449 UCB

Boulder CO 80309-0449 USA Investigator Oliver W. Frauenfeld

University of Colorado

National Snow and Ice Data Center/World Data Center for Glaciology

UCB 449

Boulder CO 80309-0449 USA Technical Contact NSIDC User Services nsidc@nsidc.org 1 303 492-6199 x 1 303 492-2468 x

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA EARTH SCIENCE Cryosphere Frozen Ground Seasonally Frozen Ground EARTH SCIENCE Land Surface Frozen Ground Seasonally Frozen Ground Climatology/Meteorology/Atmosphere Environment ARC-0229766 ARCSS arcss166 ARCSS Data Coordination Center Arctic Arctic Soils Frozen Ground OPP-0229766 Russia THERMISTORS THERMOMETERS GROUND STATIONS 1930-01-01 1990-12-31 complete 42.7 68.9 30.8 180 1 meters 1758 meters CONTINENT EUROPE EASTERN EUROPE RUSSIA GEOGRAPHIC REGION ARCTIC 1 mon English NSIDC_ARCSS NSIDC_ARCSS NSIDC Arctic System Science Data Coordination Center http://nsidc.org/arcss/ Data Center Contact NSIDC ARCSS User Services nsidc@nsidc.org 1 303 492-6199 1 303 492-2468

National Snow and Ice Data Center

CIRES, 449 UCB

University of Colorado

Boulder CO 80309-0449 USA FTP 39 KB Microsoft Excel FTP 423 KB ASCII Text FTP 53 KB GIF Frauenfeld, O. W., T. Zhang, R. G. Barry, and D. Gilichinsky. 2004. Interdecadal changes in seasonal freeze and thaw depths in Russia. Journal of Geophysical Research 109, D05101. doi:10.1029/2003JD004245. Gilichinsky, D. A., R. G. Barry, S. S. Bykhovets, et. al. 1998. A century of temperature observations of soil climate: Methods of analysis and long-term trends, in Proceedings of 7th International Conference on Permafrost, edited by A. Lewkowicz and M. Allard, pp. 313-317, Cent. d'Etudes Nordiques, Univ. Laval, Ste-Foy, Canada. State Committee of the U.S.S.R. for Hydrometeorology and Environmental Control. 1985. Instructions for meteorological stations and posts, in Meteorological Observations at Stations, vol. 3, part 1, Gidrometeoizdat, Leningrad. Zhang, T., O. W. Frauenfeld, M. C. Serreze, et. al. 2005. Spatial and temporal variability in active layer thickness over the Russian Arctic Drainage Basin. Journal of Geophysical Research 100, D16101. doi:10.1029/2004JD005642. Zhang, T., R. G. Barry, D. Gilichinsky, et. al. 2001. An amplified signal of climatic change in soil temperatures during the last century at Irkutsk, Russia. Climate Change 49, 41-76.

This data set consists of seasonally frozen ground depth measurements based on soil temperatures in the Russian Arctic. Seasonal freezing and thawing processes in cold regions play a major role in ecosystem diversity, productivity, and the Arctic hydrological system. Long-term changes in seasonal freeze and thaw depths are also important indicators of climate change. Investigators collected data from 211 ground-based stations. The record extends from 1930 to 1990 and includes seasonal freeze depths derived from soil temperature data that are averaged yearly. Data are in tab-delimited ASCII text format and are available via FTP.

VIEW RELATED INFORMATION http://nsidc.org/data/arcss160.html Time Series of Active Layer Thickness in the Russian Arctic, 1930-1990 CEOS IDN DIF 9.7 2006-05-25 2011-09-02 Fixed the data citation.