BROWSE

Related Scientist

CCP's photo.

CCP
기후물리 연구단
more info

ITEM VIEW & DOWNLOAD

Implications of the Pacific meridional mode for summer precipitation extremes over China

Cited 0 time in webofscience Cited 0 time in scopus
18 Viewed 0 Downloaded
Title
Implications of the Pacific meridional mode for summer precipitation extremes over China
Author(s)
Zhen Liu; Gao, Tao; Zhang, Wei; Luo, Ming
Publication Date
2021-09
Journal
Weather and Climate Extremes, v.33
Publisher
Elsevier B.V.
Abstract
© 2021 The AuthorsThis study examines the association between the Pacific meridional mode (PMM) and summer precipitation extremes over China using observational and reanalysis datasets. Results suggest that positive PMM phases are accompanied by suppressed extreme precipitation over the mid-lower reaches of the Yangtze River basin (MLYRB) and strengthened rainfall extremes over North China (NC). The teleconnections of PMM to regional precipitation extremes are mainly through a low-level westward and an upper-level eastward propagation of signals emanating from PMM. In the lower atmosphere, a prominent anomalous cyclone is generated as a Gill-Matsuno-type response to increased diabatic heating associated with the warming component of PMM. This cyclone excites a meridional circulation over eastern China with an anomalous anticyclone over the MLYRB and cyclone over NC, showing a Pacific-Japan-like pattern. The upper-tropospheric circulation changes are characterized by an eastward Rossby wave train and a poleward shift of the East Asian jet stream. Both the lower- and upper-atmospheric configurations are conducive to descending motion and decreases in summertime precipitation extremes over the MLYRB and ascent and increases in precipitation extremes over NC during the positive PMM phase. Our findings reveal that PMM plays a role in shaping the spatial pattern of summertime precipitation extremes, and understanding their association can be beneficial to the forecasting of regional precipitation extremes over China.
URI
https://pr.ibs.re.kr/handle/8788114/10160
DOI
10.1016/j.wace.2021.100359
ISSN
2212-0947
Appears in Collections:
Center for Climate Physics(기후물리 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse