Characteristics of tropical cyclone activity over the South China Sea: Local and nonlocal tropical cyclones
Characteristics of tropical cyclone activity over the South China Sea: Local and nonlocal tropical cyclones
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南海热带气旋活动特征：局地和非局地热带气旋
DOI：
10.3319/tao.2019.07.01.02
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
Feng Tao
中科院分区：
文献类型：
--
作者：
Wu Liang;Zhang Hongjie;Chen Jau-Ming;Feng Tao
南海受两类热带气旋影响，一类是在南海局部形成的热带气旋（本地热带气旋），另一类是穿过南海的热带气旋（非本地热带气旋）。在本研究中，研究了1979 - 2016年期间这两种类型的SCS tc的特征。研究表明，每年只有2.3个（10.9%）在南海形成（本地tc），每年有5.5个（25.5%）从北太平洋西部（WNP）进入南海（非本地tc）。非局地tc倾向于在160°E以西的西西北地区形成，并以典型的直西进路径穿过菲律宾进入南海。局地台风主要向西北或东北方向移动，与非局地台风相比，其路径较短，强度较小，寿命较短。南海年TC降水主要来源于非局地TC，但局地TC运动较慢（强度较弱）增加了TC降雨率和极端降雨强度。它们的发生位置（轨迹）随大尺度环境（导向流）的迁移，与季风槽和副热带高压的变化有关。此外，在年际和年代际时间尺度上，局地和非局地TCs的年数量都表现出显著的负相关；这在年代际时间尺度上尤其明显。这种年代际关系可以用中太平洋海温的年代际变化来解释，海温的年代际变化驱动了低层西风带和季风槽的变化。文章历史：2019年3月30日收稿2019年6月13日修稿2019年7月1日收稿
The South China Sea (SCS) is affected by two types of tropical cyclones (TCs): those locally formed in the SCS (local TCs) and those traversing the SCS (nonlocal TCs). In this study, the characteristics of these two types of SCS TCs are investigated for the period of 1979 2016. It is shown that only 2.3 per year (10.9%) form in the SCS (local TCs) and 5.5 per year (25.5%) pass from the western North Pacific (WNP) into the SCS (nonlocal TCs). Nonlocal TCs tend to form in the WNP west of 160°E and cross the Philippines into the SCS with typical straight westward tracks. Local TCs mostly move northwestward or northeastward, and they have shorter tracks, are less intense, and have shorter lifetime compared to nonlocal TCs. Annual TC rainfall in the SCS is primarily attributed to nonlocal TCs, but the slower motion of local TCs (with weaker intensity) increases TC rain-rate and intensity of extreme rainfall. Their genesis locations (tracks) migrate with large-scale environments (steering flows) associated with variations of the monsoon trough and the subtropical high in the WNP. Furthermore, the annual numbers of local and nonlocal TCs exhibit a significant inverse relationship on both interannual and interdecadal timescales; this is especially evident on interdecadal timescales. This interdecadal relationship may be explained by the interdecadal variability of sea surface temperature (SST) in the central Pacific, which drives the changes in the low-level westerlies and the monsoon trough. Article history: Received 30 March 2019 Revised 13 June 2019 Accepted 1 July 2019
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影响因子：
3.1
作者：
Hock Lim;Chih-Pei Chang
通讯作者：
Hock Lim;Chih-Pei Chang
DOI：
10.3389/feart.2020.609776
发表时间：
2016-01
期刊：
--
影响因子：
--
作者：
Zheng Ling;Yuqing Wang;Guihua Wang;Hailun He
通讯作者：
Zheng Ling;Yuqing Wang;Guihua Wang;Hailun He
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影响因子：
4.6
作者：
Yang Lei;Du Yan;Wang Dongxiao;Wang Chunzai;Wang Xin
通讯作者：
Wang Xin
影响因子：
3.2
作者：
W. Briggs;R. Levine
通讯作者：
W. Briggs;R. Levine
影响因子：
3.1
作者：
A. Sobel;S. Camargo
通讯作者：
A. Sobel;S. Camargo