View in EDS

Circulation Patterns and Dynamic Drivers of Persistent Severe Rainfall over South China and the Middle-to-Lower Yangtze River Basin during 2012–21.

Saved in:
Bibliographic Details
Title: Circulation Patterns and Dynamic Drivers of Persistent Severe Rainfall over South China and the Middle-to-Lower Yangtze River Basin during 2012–21.
Authors: Zhang, Yongjia1 (AUTHOR), Wang, Donghai1,2,3 (AUTHOR) wangdh7@mail.sysu.edu.cn, Huang, Lingdong4 (AUTHOR), Li, Enguang5 (AUTHOR)
Source: Advances in Atmospheric Sciences. May2026, Vol. 43 Issue 5, p981-999. 19p.
Subject Terms: *Rainfall, *Circulation models, *Meteorological research, *Water vapor transport
Geographic Terms: Yangtze River (China), Guangdong Sheng (China), China
Abstract: Persistent severe rainfall (PSR) events, defined as regional-scale rainfall processes with daily precipitation no less than 50 mm for at least three consecutive days, frequently occur over South China (SC) and the middle-to-lower Yangtze River Basin (MLYRB), with distinct dynamic mechanisms and moisture conditions in the two regions. Based on daily precipitation observations from China's national meteorological stations and ERA5 reanalysis during 2012–21, this study investigates the spatiotemporal distribution of PSR events in SC and MLYRB and their associated three-dimensional circulation dynamics. The analysis integrates diagnostics of 200 hPa wave activity flux, perturbation streamfunction, 500 hPa geopotential height, 850 hPa wind fields, and integrated water vapor transport. Results show that PSR events in SC mainly occur during May–June, with rainfall centers over coastal and central Guangdong and Guangxi. In contrast, MLYRB events peak during June–July, with a banded rainfall pattern along the middle-to-lower Yangtze River. Dynamical diagnostics indicate that, in SC, sustained northwest-southeast propagation of 200 hPa disturbances, the southward shift of the 500 hPa trough, and steady subtropical high maintenance provide continuous dynamical support. Concurrently, strong and persistent 850 hPa southwesterlies and long-lasting moisture transport form favorable moisture conditions. In contrast, MLYRB events are marked by rapid phase transitions of 200 hPa streamfunction anomalies and northward-westward expansion of the 500 hPa subtropical high, triggering intense rainfall development. Simultaneously, abrupt enhancement of 850 hPa southwesterlies and rapid formation of a southwest moisture corridor ensure abundant and timely moisture supply, facilitating PSR onset. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 192480060
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Circulation Patterns and Dynamic Drivers of Persistent Severe Rainfall over South China and the Middle-to-Lower Yangtze River Basin during 2012–21.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Zhang%2C+Yongjia%22">Zhang, Yongjia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Donghai%22">Wang, Donghai</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> wangdh7@mail.sysu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Huang%2C+Lingdong%22">Huang, Lingdong</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Enguang%22">Li, Enguang</searchLink><relatesTo>5</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Advances+in+Atmospheric+Sciences%22">Advances in Atmospheric Sciences</searchLink>. May2026, Vol. 43 Issue 5, p981-999. 19p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Rainfall%22">Rainfall</searchLink><br />*<searchLink fieldCode="DE" term="%22Circulation+models%22">Circulation models</searchLink><br />*<searchLink fieldCode="DE" term="%22Meteorological+research%22">Meteorological research</searchLink><br />*<searchLink fieldCode="DE" term="%22Water+vapor+transport%22">Water vapor transport</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Yangtze+River+%28China%29%22">Yangtze River (China)</searchLink><br /><searchLink fieldCode="DE" term="%22Guangdong+Sheng+%28China%29%22">Guangdong Sheng (China)</searchLink><br /><searchLink fieldCode="DE" term="%22China%22">China</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Persistent severe rainfall (PSR) events, defined as regional-scale rainfall processes with daily precipitation no less than 50 mm for at least three consecutive days, frequently occur over South China (SC) and the middle-to-lower Yangtze River Basin (MLYRB), with distinct dynamic mechanisms and moisture conditions in the two regions. Based on daily precipitation observations from China's national meteorological stations and ERA5 reanalysis during 2012–21, this study investigates the spatiotemporal distribution of PSR events in SC and MLYRB and their associated three-dimensional circulation dynamics. The analysis integrates diagnostics of 200 hPa wave activity flux, perturbation streamfunction, 500 hPa geopotential height, 850 hPa wind fields, and integrated water vapor transport. Results show that PSR events in SC mainly occur during May–June, with rainfall centers over coastal and central Guangdong and Guangxi. In contrast, MLYRB events peak during June–July, with a banded rainfall pattern along the middle-to-lower Yangtze River. Dynamical diagnostics indicate that, in SC, sustained northwest-southeast propagation of 200 hPa disturbances, the southward shift of the 500 hPa trough, and steady subtropical high maintenance provide continuous dynamical support. Concurrently, strong and persistent 850 hPa southwesterlies and long-lasting moisture transport form favorable moisture conditions. In contrast, MLYRB events are marked by rapid phase transitions of 200 hPa streamfunction anomalies and northward-westward expansion of the 500 hPa subtropical high, triggering intense rainfall development. Simultaneously, abrupt enhancement of 850 hPa southwesterlies and rapid formation of a southwest moisture corridor ensure abundant and timely moisture supply, facilitating PSR onset. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192480060
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s00376-025-5312-x
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 19
        StartPage: 981
    Subjects:
      – SubjectFull: Rainfall
        Type: general
      – SubjectFull: Circulation models
        Type: general
      – SubjectFull: Meteorological research
        Type: general
      – SubjectFull: Water vapor transport
        Type: general
      – SubjectFull: Yangtze River (China)
        Type: general
      – SubjectFull: Guangdong Sheng (China)
        Type: general
      – SubjectFull: China
        Type: general
    Titles:
      – TitleFull: Circulation Patterns and Dynamic Drivers of Persistent Severe Rainfall over South China and the Middle-to-Lower Yangtze River Basin during 2012–21.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Zhang, Yongjia
      – PersonEntity:
          Name:
            NameFull: Wang, Donghai
      – PersonEntity:
          Name:
            NameFull: Huang, Lingdong
      – PersonEntity:
          Name:
            NameFull: Li, Enguang
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 02561530
          Numbering:
            – Type: volume
              Value: 43
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Advances in Atmospheric Sciences
              Type: main
ResultId 1