Location: 52.28° N, 104.3° E,
467 m above sea level in the undulating Irkutsk Basin near the
Angara River in a region of only isolated (<10%) permafrost.
Date Range: January 1898 - September 2000 (see notes)
Depths measured: 0.2 m, 0.4 m, 0.6 m, 0.8 m, 1.2 m, 1.6
m, 2.0 m, 2.4 m, and 3.2 m with the longest, most consistent records
at 0.4, 0.8, 1.6, and 2.4 m.
Notes: There is an unexplained step increase in soil temperatures
in 1931, so the normalized plot shows data only from 1931 forward.
The air temperature data were collected at the same Irkutsk meteorological
station as the soil temperature, but are not part of the soil temperature
data set. The air temperature data are only available through 1995.
Data Reference:
Barry, R., T. Zhang, and D. Gilichinsky, compilers. 2001. Russian
historical soil temperature data. Boulder, CO: National Snow
and Ice Data Center. Digital media.
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Mean Annual Soil Temperature Profiles
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