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The Dependence of Daily and Hourly Precipitation Extremes on Temperature and Atmospheric Humidity over China
Wang, Hong1,2; Sun, Fubao1,2,3,4,5; Liu, Wenbin1,2
2018-11-01
Source PublicationJOURNAL OF CLIMATE
ISSN0894-8755
Volume31Issue:21Pages:8931-8944
Corresponding AuthorSun, Fubao(sunfb@igsnrr.ac.cn)
AbstractPrecipitation extremes are expected to increase by 7% per degree of warming according to the Clausius-Clapeyron (CC) relation. However, this scaling behavior is inappropriate for high temperatures and short-duration precipitation extremes. Here, daily data from 702 stations during 1951-2014 and hourly data from 8 stations during 2000-15 are used to examine and explain this behavior in China. Both daily and hourly precipitation extremes exhibit an increase in temperature dependency at lower temperatures. The CC scaling transitions from positive to negative rates with temperatures greater than 25 degrees C. Unlike the increase in daily data, which is similar to single-CC (1CC) scaling, the increase in hourly data resembles super-CC (2CC) scaling for temperatures greater than 13 degrees C. Results show that the precipitation extremes are controlled by water vapor for a given temperature. At lower temperatures, precipitation extremes exhibit a positive linear dependence on daily actual vapor pressure whose value is almost equal to the saturated vapor pressure at a given temperature. At higher temperatures, actual vapor pressure has difficulty maintaining a consistent increasing rate because of the exponential increasing of the saturated vapor pressure. Higher temperatures result in larger vapor pressure deficits, which lead to sharp decreases in precipitation extremes. Similar scaling behaviors are obtained in 10 river basins over China, where the breaking point temperature increases from 17 degrees C along the northwest inland area to 25 degrees C along the southeast coast. These behaviors demonstrate that precipitation extremes are firmly linked to temperature when there is sufficient moisture at lower temperatures and limited by insufficient moisture at higher temperatures. Overall, precipitation extreme events require more attention in a warming climate.
KeywordRainfall Mixed precipitation Climate variability
DOI10.1175/JCLI-D-18-0050.1
WOS KeywordSURFACE AIR-TEMPERATURE ; SHORT-DURATION RAINFALL ; WATER-USE EFFICIENCY ; CONVECTIVE PRECIPITATION ; FUTURE CHANGES ; INTENSITY ; INCREASE
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program of China[2016YFA0602402] ; National Natural Science Foundation of China[41601035] ; Key Programs of the Chinese Academy of Sciences[ZDRW-ZS-2017-3-1] ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; Chinese Academy of Sciences ; Institute of Ecology and Geography
Funding OrganizationNational Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Programs of the Chinese Academy of Sciences ; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program ; CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows ; Chinese Academy of Sciences ; Institute of Ecology and Geography
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
WOS IDWOS:000448249300002
PublisherAMER METEOROLOGICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/52635
Collection中国科学院地理科学与资源研究所
Corresponding AuthorSun, Fubao
Affiliation1.Chinese Acad Sci, Inst Geog Sci, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China
2.Chinese Acad Sci, Nat Resources Res, Beijing, Peoples R China
3.Hexi Univ, Res Sch Qilian Mt Ecol, Zhangye City, Peoples R China
4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing, Peoples R China
5.Chinese Acad Sci, Ctr Water Resources Res, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hong,Sun, Fubao,Liu, Wenbin. The Dependence of Daily and Hourly Precipitation Extremes on Temperature and Atmospheric Humidity over China[J]. JOURNAL OF CLIMATE,2018,31(21):8931-8944.
APA Wang, Hong,Sun, Fubao,&Liu, Wenbin.(2018).The Dependence of Daily and Hourly Precipitation Extremes on Temperature and Atmospheric Humidity over China.JOURNAL OF CLIMATE,31(21),8931-8944.
MLA Wang, Hong,et al."The Dependence of Daily and Hourly Precipitation Extremes on Temperature and Atmospheric Humidity over China".JOURNAL OF CLIMATE 31.21(2018):8931-8944.
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