Huangfu Jingliang, Huang Ronghui, Chen Wen
Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China.
Sci Rep. 2017 Oct 6;7(1):12732. doi: 10.1038/s41598-017-13128-2.
This paper addresses whether a tropical cyclone can trigger the onset of the South China Sea (SCS) summer monsoon (SM). We conducted a statistical analysis of tropical cyclones (TCs) generated over the western North Pacific (WNP) between late-April and May. The results showed that there were cases in which TCs were generated before the onset of the SCSSM, accounting for 43.2% of the TCs generated during this season. This study examined a representative case, Super Typhoon Chanchu (0601), which was determined to be influential in the onset of the SCSSM. With a northwestward track, Chanchu brought strong convection and westerly winds to the SCS on 12 May, which triggered the intrusion of the southwesterly winds from the Bay of Bengal and the eastward retreat of the western Pacific subtropical high. Super Typhoon Chanchu provides an example in which a TC triggered the onset of the SCSSM. The negative correlation between the onset date of the SCSSM and the number of TCs generated over the WNP used to be interpreted as the influence of the monsoon trough on TC genesis. This work provides a supplementary illustration that this relationship also includes the impact of TCs on the onset of the SCSSM.
本文探讨热带气旋是否能够触发南海夏季风的爆发。我们对4月下旬至5月在北太平洋西部生成的热带气旋进行了统计分析。结果表明，存在热带气旋在南海夏季风爆发前生成的情况，占该季节生成的热带气旋的43.2%。本研究考察了一个具有代表性的案例——超级台风“珍珠”（0601），它被确定对南海夏季风的爆发有影响。“珍珠”以西北路径移动，于5月12日给南海带来强烈对流和西风，触发了孟加拉湾西南风的侵入以及西太平洋副热带高压的东撤。超级台风“珍珠”提供了一个热带气旋触发南海夏季风爆发的例子。过去，南海夏季风爆发日期与北太平洋西部生成的热带气旋数量之间的负相关关系被解释为季风槽对热带气旋生成的影响。这项工作提供了一个补充说明，即这种关系还包括热带气旋对南海夏季风爆发的影响。
