Comparisons of Low-Level Circulation Characteristics between ECHAM5/MPI-OM Results and NCEP/NCAR Re-Analysis Data in East Asia
Comparisons of Low-Level Circulation Characteristics between ECHAM5/MPI-OM Results and NCEP/NCAR Re-Analysis Data in East Asia
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ECHAM5/MPI-OM 结果与 NCEP/NCAR 东亚地区低层环流特征比较
DOI：
10.1080/16742834.2010.11446867
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发表时间：
2010-01
期刊：
影响因子：
--
通讯作者：
赵得明
中科院分区：
文献类型：
--
作者：
赵得明
摘要区域气候模式（RCMs）可以提供比大气环流模式（GCMs）更精确的信息。然而，区域气候模型依赖于GCM结果或提供边界条件的再分析产品，特别是对于未来气候情景。同时，区域模式对降水的模拟能力与其对对流层低层环流和水汽输送的模拟能力密切相关，这是目前区域模式研究的关键问题。在东亚区域气候模式比较项目（RMIP III）中，ECHAM 5/MPI-OM（欧洲中心-汉堡模式第5版/马克斯·普朗克研究所海洋模式，简称E5 OM）的结果被用来驱动区域气候模式对过去（1978-2000）和未来（2038- 2070）气候情景的模拟。因此，有必要检验E5 OM对大气环流的代表能力，这对区域环流模式来说是大尺度环流的定义。本文将1978 ~ 2000年对流层低层的E5 OM结果与NCEP/NCAR（简称NCEP）再分析资料进行了比较。结果表明，E5 OM的结果能较好地再现对流层低层的大气环流。然而，在东亚夏季风和冬季风模拟中可以检测到差异。夏季在我国东南、中南半岛、南海和西北太平洋存在一个由850 hPa风矢量差引起的反气旋环流。冬季，由于东北亚西北风较弱，E5 OM中南半岛至台湾的东北风向北延伸，强度大于NCEP。这些差异将对低层大气环流和水汽输送以及降水的位置和强度产生相当大的影响。因此，当E5 OM结果被用作初始和边界条件来驱动RCM时，NCEP和E5 OM之间的差异应该被考虑。
Abstract Regional climate models (RCMs) can provide far more precise information than general circulation models (GCMs). However, RCMs depend on GCM results or re-analysis products providing boundary conditions, especially for future climate scenarios. Meanwhile, the capacity of RCMs to reproduce precipitation is strongly connected to its performance on circulation and moisture transport simulations in the low troposphere, which is the key problem with RCMs at present. In the Regional Climate Model Inter-comparison Project for East Asia (RMIP III), the results of ECHAM5/MPI-OM (the European Centre-Hamburg model version 5/Max Planck Institute Ocean Model, simplified as E5OM here) are used to drive RCMs for the past (1978-2000) climate simulation and future (2038-70) climate scenarios. Therefore, it is necessary to test E5OM's ability to represent atmospheric circulation, which defines the large-scale circulation for RCMs. Here, comparisons between the E5OM results and NCEP/NCAR (simplified as NCEP) re-analysis data in the low troposphere for the years 1978 to 2000 are performed. The results show that E5OM results can generally reproduce atmospheric circulations in the low troposphere. However, differences can be detected in East Asian summer and winter monsoon simulations. For summer, there is an anti-cyclone circulation for the difference of wind vector at 850 hPa in Southeast China, the Indo-China Peninsula, the South China Sea, and the northwestern Pacific. For winter, due to the weaker northwesterly wind in Northeast Asia, the northeasterly wind from the Indo-China Peninsula to Taiwan in E5OM extends north-ward with greater intensity than that in NCEP. These differences will have a considerable influence on the low level atmospheric circulation and water vapor transport as well as the location and intensity of the precipitation. Therefore, when E5OM results are to be used as initial and boundary conditions to drive RCMs, the differences between NCEP and E5OM should be considered.
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影响因子：
4.9
作者：
S. Hagemann;K. Arpe;E. Roeckner
通讯作者：
S. Hagemann;K. Arpe;E. Roeckner
影响因子：
4.6
作者：
A. Seth;A. Seth;S. Rauscher;S. Camargo;J. Qian;J. Pal
通讯作者：
A. Seth;A. Seth;S. Rauscher;S. Camargo;J. Qian;J. Pal
影响因子：
3.4
作者：
Gao, Xuejie;Xu, Ying;Giorgi, F.
通讯作者：
Giorgi, F.
影响因子：
4.8
作者：
DICKINSON, RE;ERRICO, RM;BATES, GT
通讯作者：
BATES, GT
DOI：
10.17617/2.995221
发表时间：
2004
期刊：
--
影响因子：
--
作者：
E. Roeckner;R. Brokopf;M. Esch;M. Giorgetta;S. Hagemann;L. Kornblueh;E. Manzini;U. Schlese;
通讯作者：
E. Roeckner;R. Brokopf;M. Esch;M. Giorgetta;S. Hagemann;L. Kornblueh;E. Manzini;U. Schlese;