The role of land-sea distribution and orography in the asian monsoon. Part I: Land-sea distribution
The role of land-sea distribution and orography in the asian monsoon. Part I: Land-sea distribution
复制标题
陆海分布和地形在亚洲季风中的作用。
DOI：
10.1007/s00376-009-9005-7
复制
发表时间：
2010-02
影响因子：
5.8
通讯作者：
Fu Congbin
中科院分区：
文献类型：
--
作者：
Xu Zhongfeng;Qian Yongfu;Fu Congbin
为了确定它们对亚洲季风的影响，通过包括各种陆海分布(LSD)，如经向LSD、纬向LSD、热带大尺度LSD和次大陆尺度LSD，进行了一些AGCM模拟。在对某一纬度以北/以南的大陆/海洋进行的7次经向LSD实验中，除了南部海岸线以5.6°为间隔从40°到4°N变化外，LSD保持不变。在21°N以北海岸线的试验中，在副热带地区没有发现季风。相反，当大陆向21°N以南伸展时，模拟的是夏季风，而热带大陆向南伸展时，热带夏季风的爆发时间更早，强度更强。结果表明，中纬向LSD的存在会导致大陆与海洋之间的纬向气压梯度较大，进而形成东亚副热带季风。有无印度半岛和印度支那-中国半岛的模拟对比表明，由于热带陆地和海洋之间的热带不对称加热，两个半岛的存在显著增强了南亚地区的西南风。热带纬向LSD在积云对流的形成中起着至关重要的作用。
A number of AGCM simulations were performed by including various land-sea distributions (LSDs), such as meridional LSDs, zonal LSDs, tropical large-scale LSDs, and subcontinental-scale LSDs, to identify their effects on the Asian monsoon. In seven meridional LSD experiments with the continent/ocean located to the north/south of a certain latitude, the LSDs remain identical except the southern coastline is varied from 40° to 4°N in intervals of 5.6°. In the experiments with the coastline located to the north of 21°N, no monsoon can be found in the subtropical zone. In contrast, a summer monsoon is simulated when the continent extends to the south of 21°N. Meanwhile, the earlier onset and stronger intensity of the tropical summer monsoon are simulated with the southward extension of the tropical continent. The effects of zonal LSDs were investigated by including the Pacific and Atlantic Ocean into the model based on the meridional LSD run with the coastline located at 21°N. The results indicate that the presence of a mid-latitude zonal LSD induces a strong zonal pressure gradient between the continent and ocean, which in turn results in the formation of an East Asian subtropical monsoon. The comparison of simulations with and without the Indian Peninsula and Indo-China Peninsula reveals that the presence of two peninsulas remarkably strengthens the southwesterly winds over South Asia due to the tropical asymmetric heating between the tropical land and sea. The tropical zonal LSD plays a crucial role in the formation of cumulus convection.
登录
查看更多内容
影响因子：
--
作者：
Zhu Congwen
通讯作者：
Zhu Congwen
影响因子：
3.1
作者：
J. Coakley;P. Chylek
通讯作者：
J. Coakley;P. Chylek
影响因子：
4.9
作者：
G. Zhang;J. Kiehl;P. Rasch
通讯作者：
G. Zhang;J. Kiehl;P. Rasch
影响因子：
5.8
作者：
Zhang Yao-cun;Qian Yongfu
通讯作者：
Zhang Yao-cun;Qian Yongfu
DOI：
10.3402/tellusa.v49i4.14683
发表时间：
1997-08
期刊：
Tellus A
影响因子：
--
作者：
U. V. Bhide;V. R. Mujamdar;S. Ghanekar;D. K. Paul;Tsing‐Chang Chen;G. Rao
通讯作者：
U. V. Bhide;V. R. Mujamdar;S. Ghanekar;D. K. Paul;Tsing‐Chang Chen;G. Rao