Antarctic 20th Century Accumulation Changes Based on Regional Climate Model Simulations
Antarctic 20th Century Accumulation Changes Based on Regional Climate Model Simulations
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基于区域气候模型模拟的南极20世纪累积变化
DOI:
10.1155/2010/327172
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发表时间:
2010
影响因子:
2.9
通讯作者:
D. Handorf
中科院分区:
文献类型:
--
作者:
Dethloff;K. Glushak;A. Rinke;D. Handorf
The regional climate model HIRHAM has been applied to Antarctica driven at the lateral and lower boundaries by European Reanalysis data ERA‐40 for the period 1958–1998. Simulations over 4 decades, carried out with a horizontal resolution of 50 km, deliver a realistic simulation of the Antarctic atmospheric circulation, synoptic‐scale pressure systems, and the spatial distribution of precipitation minus sublimation (P‐E) structures. The simulated P‐E pattern is in qualitative agreement with glaciological estimates. The estimated (P‐E) trends demonstrate surfacemass accumulation increase at the West Antarctic coasts and reductions in parts of East Antarctica. The influence of the Antarctic Oscillation (AAO) on the near‐surface climate and the surface mass accumulation over Antarctica have been investigated on the basis of ERA‐40 data and HIRHAM simulations. It is shown that the regional accumulation changes are largely driven by changes in the transient activity around the Antarctic coasts due to the varying AAO phases. During positive AAO, more transient pressure systems travelling towards the continent, and Western Antarctica and parts of South‐Eastern Antarctica gain more precipitation and mass. Over central Antarctica the prevailing anticyclone causes a strengthening of polar desertification connected with a reduced surface mass balance in the northern part of East Antarctica.
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DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
D. Handorf;K. Dethloff
通讯作者:
K. Dethloff
影响因子:
4.9
作者:
G. Krinner;Bérangère Guicherd;Katia Ox;C. Genthon;O. Magand
通讯作者:
O. Magand
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
Hanna Tietäväinen;T. Vihma
通讯作者:
T. Vihma
影响因子:
3.7
作者:
A. Stevermer;B. Schwartz
通讯作者:
B. Schwartz
DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
A. Rinke;P. Marbaix;K. Dethloff
通讯作者:
K. Dethloff