首页|Spatio-temporal Variation Characteristics of Extreme Climate Events and Their Teleconnections to Large-scale Ocean-atmospheric Circula-tion Patterns in Huaihe River Basin,China During 1959-2019

Spatio-temporal Variation Characteristics of Extreme Climate Events and Their Teleconnections to Large-scale Ocean-atmospheric Circula-tion Patterns in Huaihe River Basin,China During 1959-2019

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Huaihe River Basin(HRB)is located in China's north-south climatic transition zone,which is very sensitive to global cli-mate change.Based on the daily maximum temperature,minimum temperature,and precipitation data of 40 meteorological stations and nine monthly large-scale ocean-atmospheric circulation indices data during 1959-2019,we present an assessment of the spatial and tem-poral variations of extreme temperature and precipitation events in the HRB using nine extreme climate indices,and analyze the telecon-nection relationship between extreme climate indices and large-scale ocean-atmospheric circulation indices.The results show that warm extreme indices show a significant(P＜0.05)increasing trend,while cold extreme indices(except for cold spell duration)and diurnal temperature range(DTR)show a significant decreasing trend.Furthermore,all extreme temperature indices show significant mutations during 1959-2019.Spatially,a stronger warming trend occurs in eastern HRB than western HRB,while maximum 5-d precipitation(Rx5day)and rainstorm days(R25)show an increasing trend in the southern,central,and northwestern regions of HRB.Arctic oscilla-tion(AO),Atlantic multidecadal oscillation(AMO),and East Atlantic/Westem Russia(EA/WR)have a stronger correlation with ex-treme climate indices compared to other circulation indices.AO and AMO(EA/WR)exhibit a significant(P＜0.05)negative(positive)correlation with frost days and diurnal temperature range.Extreme warm events are strongly correlated with the variability of AMO and EA/WR in most parts of HRB,while extreme cold events are closely related to the variability of AO and AMO in eastern HRB.In con-trast,AMO,AO,and EA/WR show limited impacts on extreme precipitation events in most parts of HRB.

extreme climate indicesSen's slope variationmutation testatmospheric circulation indicesPearson's correlation analysisHuaihe River Basin(HRB),China

YAO Tian、ZHAO Qiang、WU Chuanhao、HU Xiaonong、XIA Chuan'an、WANG Xuan、SANG Guoqiang、LIU Jian、WANG Haijun

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School of Water Conservancy and Environment,University of Jinan,Jinan 250022,China

Yangtze Institute for Conservation and Development,Hohai University,Nanjing 210098,China

Zijin School of Geology and Mining,Fuzhou University,Fuzhou 350108

Water Research Institute of Shandong Province,Jinan 250014,China

Shandong Provincial Bureau of Hydrology and Water Re-sources,Jinan 250100,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Guangdong Province,ChinaNatural Science Foundation of Guangdong Province,ChinaSpecial Fund for Science and Technology Development in 2016 of Department of Science and Technology of Guangdong Province,ChinaProject of Jinan Science and Technology Bureau

52279016519091065187910842002247414711602020A15150110382020A15151110542016A0202230072021GXRC070

2024

10.1007/s11769-023-1398-1

中国地理科学(英文版)
中国科学院长春地理研究所

中国地理科学(英文版)

CSTPCD
影响因子：0.754
ISSN：1002-0063
年,卷(期)：2024.34(1)
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