Climate and forecast mode simulations for antarctica: Implications for temperature and wind

Climate and forecast mode simulations for antarctica: Implications for temperature and wind
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南极洲的气候和预报模式模拟:对温度和风的影响

DOI:
10.1007/s00376-010-9178-0
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发表时间:
2010
影响因子:
5.8
通讯作者:
M. Mielke
M. Mielke
中科院分区:
地球科学2区
文献类型:
--
作者:
A. Rinke;L. Bian;K. Dethloff;C. Xiao;M. Mielke

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利用区域气候模式HIRlam-ECHAM(HIRHAM)对一个泛南极区域的气候和预报模式进行了模拟。该模型模拟对流层温度和风廓线的能力是量化的,通过比较其结果与无线电探空仪从戴维斯站获得的数据为2007年1月和7月。与气候模式相比,预测模式被发现提供改进的结果,在近地面和对流层低层的温度和风模拟。发现的主要剩余模型偏差是低层风急流的代表性不足。集合模拟的基础上,它表明,一个独特的内部变率是固有的气候模式模拟,并确定相关领域的可预测性降低南极洲。
Climate and forecast mode simulations with the regional climate model HIRlam-ECHAM(HIRHAM) are evaluated over a pan-Antarctic domain. The ability of the model to simulate temperature and wind profiles in the troposphere is quantified by comparing its results with radiosonde data acquired from the Davis station for January and July 2007. Compared to the climate mode, the forecast mode was found to deliver improved results for temperature and wind simulations at the near surface and in the lower troposphere. The main remaining model bias found was the under-representation of low-level wind jets. Based on ensemble simulations, it is shown that a distinct internal variability is inherent in the climate mode simulations, and associated areas of reduced predictability over Antarctica are identified.
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DOI: --
发表时间: 2004
期刊:
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