Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA

Wang, Lei; Qian, Yun; Zhang, Yaocun; Zhao, Chun; Leung, L. Ruby; Huang, Anning; Xiao, Chuliang

doi:10.1002/joc.4530

Title: Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA

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Abstract

This paper presents a comprehensive analysis of interannual and interdecadal variations of summer precipitation and precipitation-related extreme events in China associated with variations of the East Asian summer monsoon (EASM) from 1979-2012. A high-quality daily precipitation dataset covering 2287 weather stations in China is analyzed. Based on the precipitation pattern analysis using empirical orthogonal functions, three sub-periods of 1979-1992 (period I), 1993-1999 (period II) and 2000-2012 (period III) are identified to be representative of the precipitation variability. Similar significant variability of the extreme precipitation indices is found across four sub-regions in eastern China. The spatial patterns of summer mean precipitation, the number of days with daily rainfall exceeding 95th percentile precipitation (R95p) and the maximum number of consecutive wet days (CWD) anomalies are consistent, but opposite to that of maximum consecutive dry days (CDD) anomalies during the three sub-periods. However, the spatial patterns of hydroclimatic intensity (HY-INT) are notably different from that of the other three extreme indices, but highly correlated to the dry events. The changes of precipitation anomaly patterns are accompanied by the change of the EASM regime and the abrupt shift of the position of the west Pacific subtropical high around 1992/1993 and 1999/2000, respectively, which influencemore »« less

Authors:

Wang, Lei ^[1]; Qian, Yun ^[2]; Zhang, Yaocun ^[3]; Zhao, Chun ^[2]; Leung, L. Ruby ^[2]; Huang, Anning ^[3];

^[4]

School of Atmospheric Sciences, Nanjing University, China; Pacific Northwest National Laboratory, Richland WA USA
Pacific Northwest National Laboratory, Richland WA USA
School of Atmospheric Sciences, Nanjing University, China
Cooperative Institute for Limnology and Ecosystems Research, School of Natural Resources and Environment, University of Michigan, Ann Arbor MI USA

Publication Date:: Mon Nov 09 00:00:00 EST 2015

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1290400

Report Number(s):: PNNL-SA-108238
Journal ID: ISSN 0899-8418; KP1703010

DOE Contract Number:: AC05-76RL01830

Resource Type:: Journal Article

Journal Name:: International Journal of Climatology

Additional Journal Information:: Journal Volume: 36; Journal Issue: 8; Journal ID: ISSN 0899-8418

Country of Publication:: United States

Language:: English

Subject:: interannual; interdecadal; precipitation; East Asian summer monsoon; EASM

Citation Formats


                    Wang, Lei, Qian, Yun, Zhang, Yaocun, Zhao, Chun, Leung, L. Ruby, Huang, Anning, and Xiao, Chuliang. Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA.  United States: N. p., 2015. 
        Web.  doi:10.1002/joc.4530.

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                    Wang, Lei, Qian, Yun, Zhang, Yaocun, Zhao, Chun, Leung, L. Ruby, Huang, Anning, & Xiao, Chuliang. Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA.  United States.  https://doi.org/10.1002/joc.4530

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                    Wang, Lei, Qian, Yun, Zhang, Yaocun, Zhao, Chun, Leung, L. Ruby, Huang, Anning, and Xiao, Chuliang. 2015.  
        "Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA".  United States.  https://doi.org/10.1002/joc.4530.

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@article{osti_1290400,

  title        = {Observed variability of summer precipitation pattern and extreme events in East China associated with variations of the East Asian summer monsoon: VARIABILITY OF SUMMER PRECIPITATION AND EXTREME EVENT IN EAST CHINA},

  author       = {Wang, Lei and Qian, Yun and Zhang, Yaocun and Zhao, Chun and Leung, L. Ruby and Huang, Anning and Xiao, Chuliang},

  abstractNote = {This paper presents a comprehensive analysis of interannual and interdecadal variations of summer precipitation and precipitation-related extreme events in China associated with variations of the East Asian summer monsoon (EASM) from 1979-2012. A high-quality daily precipitation dataset covering 2287 weather stations in China is analyzed. Based on the precipitation pattern analysis using empirical orthogonal functions, three sub-periods of 1979-1992 (period I), 1993-1999 (period II) and 2000-2012 (period III) are identified to be representative of the precipitation variability. Similar significant variability of the extreme precipitation indices is found across four sub-regions in eastern China. The spatial patterns of summer mean precipitation, the number of days with daily rainfall exceeding 95th percentile precipitation (R95p) and the maximum number of consecutive wet days (CWD) anomalies are consistent, but opposite to that of maximum consecutive dry days (CDD) anomalies during the three sub-periods. However, the spatial patterns of hydroclimatic intensity (HY-INT) are notably different from that of the other three extreme indices, but highly correlated to the dry events. The changes of precipitation anomaly patterns are accompanied by the change of the EASM regime and the abrupt shift of the position of the west Pacific subtropical high around 1992/1993 and 1999/2000, respectively, which influence the moisture transport that contributes most to the precipitation anomalies. Lastly, the EASM intensity is linked to sea surface temperature anomaly over the tropical Indian and Pacific Ocean that influences deep convection over the oceans.},

  doi          = {10.1002/joc.4530},

  url          = {https://www.osti.gov/biblio/1290400},
  journal      = {International Journal of Climatology},

  issn         = {0899-8418},

  number       = 8,

  volume       = 36,

  place        = {United States},

  year         = {Mon Nov 09 00:00:00 EST 2015},

  month        = {Mon Nov 09 00:00:00 EST 2015}

}

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