Global scaling of precipitation extremes using near-surface air temperature and dew point temperature

Tian, Bingru1; Chen, Hua1; Yin, Jiabo1; Liao, Zhen1; Li, Na2,3; He, Shaokun4

2023-03-01

10.1088/1748-9326/acb836

Environmental Research Letters   Impact Factor & Quartile

1748-9326

1748-9326

Global warming has altered the energy budget and water cycle processes of the land-atmosphere system, which has resulted in significant effects on precipitation extremes. Previous studies have identified a hook structure between near-surface temperature and precipitation extremes, in which extremes increase with temperature rises and decline thereafter. However, the underlying physical mechanisms of this association remain poorly understood. In this study, global-scale responses of precipitation extremes to near-surface air temperature (SAT) and dew point temperature (DPT) were quantified using the ERA5 reanalysis dataset. The results reveal a hook structure between precipitation extremes scaling and temperature, for both SAT and DPT, over many regions worldwide. The peak point temperature (T (pp)) ranges from 15 degrees C to 25 degrees C, increasing as latitude decreased. The association of precipitation extremes with SAT is negative in many areas in the tropics, whereas that with DPT is almost always positive; this suggests that moisture supply is the main factor limiting precipitation at higher surface temperatures. The hook structure and scaling rates incompatible with Clausius-Clapeyron scaling are associated with various factors including precipitation duration, total column water vapour, convective available potential energy, and relative humidity.

precipitation extremes Clausius-Clapeyron relation precipitation duration hook structure climate change

SCI

English

Others

National Natural Science Foundation of China["52009091","52242904"] ; Fundamental Research Funds for the Central Universities[2042022kf1221]

Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences

Environmental Sciences ; Meteorology & Atmospheric Sciences

WOS:000936011200001

IOP Publishing Ltd

2-s2.0-85148946903

Web of Science

1.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn Sc, Wuhan 430072, Peoples R China
2.China Yangtze Power Co Ltd, Yichang 443133, Hubei, Peoples R China
3.China Yangtze Power Co Ltd, Hubei Key Lab Intelligent Yangtze & Hydroelect Sci, Yichang 443000, Peoples R China
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China

Tian, Bingru,Chen, Hua,Yin, Jiabo,et al. Global scaling of precipitation extremes using near-surface air temperature and dew point temperature[J]. Environmental Research Letters,2023,18(3).

Tian, Bingru,Chen, Hua,Yin, Jiabo,Liao, Zhen,Li, Na,&He, Shaokun.(2023).Global scaling of precipitation extremes using near-surface air temperature and dew point temperature.Environmental Research Letters,18(3).

Tian, Bingru,et al."Global scaling of precipitation extremes using near-surface air temperature and dew point temperature".Environmental Research Letters 18.3(2023).