A climatological analysis of the monsoon break following the summer monsoon onset over Luzon Island, Philippines,International Journal of Climatology

当前位置： X-MOL 学术 › Int. J. Climatol. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A climatological analysis of the monsoon break following the summer monsoon onset over Luzon Island, Philippines
International Journal of Climatology ( IF 3.5 ) Pub Date : 2020-11-30 , DOI: 10.1002/joc.6949
Lyndon Mark P. Olaguera _{1,

2,

3} , Jun Matsumoto _{1,

4} , Hisayuki Kubota _{4,

5} , Esperanza O. Cayanan ₆ , Flaviana D. Hilario ₆

Affiliation

This study investigates the climatology of the monsoon break following the onset of the summer rainy season over Luzon Island (120–122.5°E, 13–22°N) in the Philippines from 1979–2017. The first post‐onset monsoon break is remarkable in stations located over the north and central Luzon Island and occurs climatologically in early June. Composite analysis of the large‐scale circulation features during the monsoon break period shows that this break is associated with the westward extension of the western North Pacific Subtropical High (WNPSH), which weakened the monsoon southwesterlies and induced enhanced low‐level divergence over Luzon Island. The westward extension of the WNPSH may be facilitated by the phase change of the boreal summer intraseasonal oscillation (BSISO). About 59% (23/39) of the monsoon break cases occurred when suppressed convection, associated with the dry phases of the BSISO, is apparent over the western North Pacific. This suppressed convection favours the westward expansion of the WNPSH.

中文翻译：

菲律宾吕宋岛夏季季风爆发后季风爆发的气候学分析

这项研究调查了1979-2017年菲律宾吕宋岛（120–122.5°E，13–22°N）夏季雨季开始后的季风中断气候。爆发后的第一次季风爆发在吕宋岛北部和中部的台站很明显，发生在6月初的气候上。对季风爆发期大尺度环流特征的综合分析表明，这一破裂与北太平洋副热带高压（WNPSH）的向西延伸有关，这削弱了季风西南风，并导致吕宋岛上空的低空分叉增强。北方夏季夏季季节内振荡（BSISO）的相变可促进WNPSH向西延伸。约有59％（23/39）的季风中断案例是在北太平洋西部明显出现与BSISO干旱相伴的对流抑制时出现的。这种抑制的对流有利于WNPSH向西扩张。

更新日期：2020-11-30

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11