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The Warm-period Daily Precipitation Extremes Scaling with Temperature in Eastern China
  • Danqing Huang,
  • Jian ZHU,
  • Xiaowen Tang
Danqing Huang
Nanjing University

Corresponding Author:huangdq@nju.edu.cn

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Jian ZHU
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University
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Xiaowen Tang
College of Atmospheric Sounding, Chengdu University of Information Technology
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Using station and reanalysis datasets, the application of C-C scaling in understanding the relation between precipitation extremes and temperature in eastern China has been examined. The results show that the C-C scaling could be used to understand the daily precipitation extreme intensity increase with Tm, as it is below ~25ºC. However, as Tm exceeds 25ºC, the daily precipitation extremes would decrease with Tm, particularly for South China. The change in the variation as Tm exceeds 25ºC may be attributed to the negative scaling of precipitation efficiency and vertical velocity with Tm. The sharp increase in the convective inhibition, decrease in the temperature advection, can partly explain the negative scaling of precipitation efficiency and Tm, vertical velocity and Tm as it exceeds 25ºC, respectively. Our results show physical image linking the precipitation extremes and temperature variation, which would likely help understanding the variations in precipitation extremes under a warmer future.