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Synchronous Characteristics of Precipitation Extremes in the Yangtze and Murray–Darling River Basins and the Role of ENSO

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Journal of Meteorological Research 2021年第2期35卷 282-294页

作者： Yu GONG Tong JIANG Buda SU Jinlong HUANG zbigniew wkundzewicz Cheng JING Hemin SUN State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Institute for Disaster Risk Management/School of Geographical Science Nanjing University of Information Science&Technologyy Nanjing 210044China National Climate Center China Meteorological AdministrationBeijing 100081China Beijing Meteorological Observation Center(Beijing Observatory) Beijing 100089China National Meteorological Center China Meteorological AdministrationBeijing 100081China University of Chinese Academy of Sciences Beijing 100049China Institute of Agricultural and Forest Environment Polish Academy of Sciences y Bukowska 1960-809PoznanPoland

The floods caused by the extreme precipitation in the Yangtze River basin(YRB)and Murray–Darling River basin(MDRB),the largest basins in China and Australia,have significant impacts on the society and regional *** on the spatial–temporal analysis of the daily precipitation extremes(DPEs)during 1982–2016,we found that for both basins,the whole-basin-type DPEs have the highest proportion and a synchronous DPE interannual variation characteristic exists in the two basins,with the 3-yr running correlation coefficient of the annual DPE days(DPEDs)reaching almost 0.7(significant at the 0.01 level).The El Ni?o–Southern Oscillation(ENSO),which is one of the most significant climate disturbance factors in the world,plays an important role in modulating the variability of the DPEs in the two *** value decomposition(SVD)analysis revealed that both the YRB and the MDRB’s whole-basin-type DPEs are closely coupled with the procedure that the preceding winter eastern Pacific(EP)-type El Ni?o faded to a central Pacific(CP)-type La *** means that the DPEs in the YRB and MDRB may synchronously occur more frequently when the above process *** to the atmosphere–ocean interaction from the east–west dipole sea surface temperature(SST)anomaly pattern,the atmospheric circulation disturbance exhibits a pattern in which the equatorial eastern Pacific region is a mass source anomaly with a higher pressure,drier air,and weaker convection,while the equatorial western Pacific region is a mass sink anomaly with a lower pressure,wetter air,and stronger ***,two wave trains that originated from the tropical western Pacific were found to extend to the YRB and *** interaction between the wave train’s interphase dynamics and water vapor transport disturbance results in the ascent conditions and enhanced water vapor transport,which leads to the synchronous occurrence of DPEs in the YRB and MDRB on an interannual scale.

关键词： precipitation extreme El Ni?o–Southern Oscillation(ENSO) Yangtze River basin(YRB) Murray–Darling River basin(MDRB)

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Runoff components and the contributions of precipitation and temperature in a highly glacierized river basin in Central As

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Frontiers of Earth Science 2023年第2期17卷 361-377页

作者： Anqian WANG Buda SU Jinlong HUANG Cheng JING zbigniew wkundzewicz Hui TAO Mingjin ZHAN Tong JIANG College of Geography and Environment Shandong Normal UniversityJinan 250358China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster/Institute for Disaster Risk Management/School of Geography Science Nanjing University of Information Science&TechnologyNanjing 210044China State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Institute for Agricultural and Forest Environment Polish Academy of SciencesPoznan 60809Poland Jiangxi Eco-meteorological Center Nanchang 330000China

Understanding the main drivers of runoff components and contributions of precipitation and temperature have important implications for water-limited inland basins,where snow and glacier melt provide essential inputs to surface *** quantify the impact of temperature and precipitation changes on river runoff in the Tarim River basin(TRB),the Hydrologiska Byrans Vattenbalansavdelning(HBV)-light model,which contains a glacier routine process,was applied to analyze the change in runoff *** in the headstream parts of the TRB was more sensitive to temperature than to *** the TRB,overall,rainfall generated 41.22%of the total runoff,while snow and glacier meltwater generated 20.72%and 38.06%,*** values indicate that temperature exerted more major effects on runoff than did *** compositions were different in the various subbasins and may have been caused by different glacier *** runoff volumes generated by rainfall,snowmelt,glacier melt was almost equal in the Aksu River *** the Yarkand and Hotan River subbasins,glacier meltwater was the main supplier of runoff,accounting for 46.72%and 58.73%,*** the Kaidu-Kongque River subbasin,80.86%was fed by rainfall and 19.14%was fed by *** the TRB,runoff generated by rainfall was the dominant component in spring,autumn,winter,while glacier melt runoff was the dominant component in *** in the TRB significantly increased during 1961–2016;additionally,56.49%of the increase in runoff was contributed by temperature changes,and 43.51%was contributed by precipitation *** spring,the runoff increase in the TRB was mainly caused by the precipitation increase,opposite result in summer and *** of temperature was negative in *** findings have important implications for water resource management in high mountainous regions and for similar river basins in which melting glaciers strongly impact the hydrological

关键词： runoff components glacier meltwater contribution HBV-light model Tarim River basin

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