Role of the Tian Shan Mountains and Pamir Plateau in Increasing Spatiotemporal Differentiation of Precipitation over Interior Asia
Role of the Tian Shan Mountains and Pamir Plateau in Increasing Spatiotemporal Differentiation of Precipitation over Interior Asia
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天山山脉和帕米尔高原在亚洲内陆降水时空分异增强中的作用
DOI：
10.1175/jcli-d-17-0594.1
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发表时间：
2018-08
影响因子：
4.9
通讯作者：
Hong Chang
中科院分区：
文献类型：
--
作者：
Yingying Sha;Zhengguo Shi;Xiaodong Liu;Zhisheng An;Xinzhou Li;Hong Chang
为了确定天山和帕米尔高原对亚洲内陆干旱状况的影响，进行了数值模拟。这些地形特征对天山和帕米尔高原的西、东、北三个亚区，即中亚干旱区、塔里木盆地和北方平原降水季节性的分异起着重要作用。天山和帕米尔高原隆升前，东部干旱区和西部干旱区降水的季节变化基本一致，春、冬季降水最多，夏季降水最少。天山和帕米尔高原隆升后，西部原有降水季节性增强。由于东部干旱亚区夏季降水量增加，而冬、春季降水量减少，东部降水季节性变化为夏季降水量最大，而北部干旱亚区降水季节性变化为夏季降水量最大。降水量的变化与垂直运动的变化有较好的对应关系。在大气定常波的调制作用下，遥远的东亚季风也受到影响。虽然东亚地区偏南风增强，但由于反气旋环流的出现，中国东部沿海和副热带西太平洋的季风降水明显减少。天山山脉和帕米尔高原对东亚冬季风的加强也有贡献。
Numerical simulations were conducted to determine the impact of the Tian Shan Mountains and Pamir Plateau on arid conditions over interior Asia. These topographies are crucial for the differentiation of the precipitation seasonality among the subregions in the west, east, and north of the Tian Shan Mountains and Pamir Plateau, namely, arid central Asia, the Tarim basin, and the northern plains. Before the uplift of the Tian Shan Mountains and Pamir Plateau, the precipitation seasonality over the east arid subregion was consistent with that over the west arid subregion, with maximum rainfall in spring and winter and minimum rainfall in summer. After the uplift of the Tian Shan Mountains and Pamir Plateau, the original precipitation seasonality in the west was strengthened. As the precipitation in the east arid subregion increased in summer but decreased in winter and spring, the precipitation seasonality in the east changed to peak in summer, while the precipitation in the north arid subregion showed the opposite change. The precipitation alteration corresponded well with the change of vertical motion. With the modulation of atmospheric stationary waves, the remote East Asian monsoon was also impacted. Though enhanced southerly wind blew over East Asia, the monsoon precipitation over the east coast of China and subtropical western Pacific Ocean was significantly reduced as an anticyclonic circulation appeared. The Tian Shan Mountains and Pamir Plateau also contributed to the intensification of the East Asian winter monsoon.
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影响因子：
4.9
作者：
Baldwin, Jane;Vecchi, Gabriel
通讯作者：
Vecchi, Gabriel
影响因子：
4.9
作者：
R. White;D. Battisti;G. Roe
通讯作者：
R. White;D. Battisti;G. Roe
晚渐新世-中新世中纬度干旱化和亚洲内陆风型
影响因子：
5.8
作者：
Sun, Jimin;Ye, Jie;Meng, Jin
通讯作者：
Meng, Jin
影响因子：
3.1
作者：
W. Gallus;Richard H. Johnson
通讯作者：
W. Gallus;Richard H. Johnson
影响因子：
4.6
作者：
Zhengguo Shi;Xiao-dong Liu;Yimin Liu;Y. Sha;Tingting Xu
通讯作者：
Zhengguo Shi;Xiao-dong Liu;Yimin Liu;Y. Sha;Tingting Xu