共 65 条
Modeling the temperature evolution of Svalbard permafrost during the 20th and 21st century
被引:75
作者:

Etzelmueller, B.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oslo, Dept Geosci, N-0316 Oslo, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

Schuler, T. V.
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h-index: 0
机构:
Univ Oslo, Dept Geosci, N-0316 Oslo, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

Isaksen, K.
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h-index: 0
机构:
Norwegian Meteorol Inst, N-0313 Oslo, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

Christiansen, H. H.
论文数: 0 引用数: 0
h-index: 0
机构:
Univ Oslo, Dept Geosci, N-0316 Oslo, Norway
Univ Ctr Svalbard UNIS, Arct Geol Dept, N-9171 Longyearbyen, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

Farbrot, H.
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h-index: 0
机构:
Univ Oslo, Dept Geosci, N-0316 Oslo, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway

Benestad, R.
论文数: 0 引用数: 0
h-index: 0
机构:
Norwegian Meteorol Inst, N-0313 Oslo, Norway Univ Oslo, Dept Geosci, N-0316 Oslo, Norway
机构:
[1] Univ Oslo, Dept Geosci, N-0316 Oslo, Norway
[2] Norwegian Meteorol Inst, N-0313 Oslo, Norway
[3] Univ Ctr Svalbard UNIS, Arct Geol Dept, N-9171 Longyearbyen, Norway
来源:
关键词:
CLIMATE-CHANGE;
ATMOSPHERIC CIRCULATION;
MOUNTAIN PERMAFROST;
THERMAL STATE;
ROCK WALLS;
SEA-ICE;
PRECIPITATION;
ADVENTDALEN;
SCENARIOS;
SUMMER;
D O I:
10.5194/tc-5-67-2011
中图分类号:
P9 [自然地理学];
学科分类号:
0705 ;
070501 ;
摘要:
Variations in ground thermal conditions in Svalbard were studied based on measurements and modelling. Ground temperature data from boreholes were used to calibrate a transient heat flow model describing depth and time variations in temperatures. The model was subsequently forced with historical surface air temperature records and possible future temperatures downscaled from multiple global climate models. We discuss ground temperature development since the early 20th century, and the thermal responses in relation to ground characteristics and snow cover. The modelled ground temperatures show a gradual increase between 1912 and 2010, by about 1.5 degrees C to 2 degrees C at 20m depth. The active layer thickness (ALT) is modelled to have increased slightly, with the rate of increase depending on water content of the near-surface layers. The used scenario runs predict a significant increase in ground temperatures and an increase of ALT depending on soil characteristics.
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页码:67 / 79
页数:13
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