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The Enhancing Effect of the East Asian Subtropical Westerly Jet on Summer Extreme High-Temperature Events over Central-Eastern China Since the Late 1990s

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ADVANCES IN ATMOSPHERIC SCIENCES 2025年第3期42卷 453-466页

作者： Gao, Chujie Niu, Yuyu Li, Gen sun, shanlei Lu, Bo Li, Chaofan Xu, Bei Huang, Jinglong sun, Xiubao Hohai Univ Coll Oceanog Minist Nat Resources Nanjing 210098 Peoples R China Hohai Univ Key Lab Marine Hazards Forecasting Minist Nat Resources Nanjing 210098 Peoples R China Nanjing Univ Informat Sci & Technol Key Lab Meteorol Disaster Minist Educ KLME Nanjing 210044 Peoples R China Nanjing Univ Informat Sci & Technol Collaborat Innovat Ctr Forecast & Evaluat Meteorol Nanjing 210044 Peoples R China Chinese Acad Sci South China Sea Inst Oceanol State Key Lab Trop Oceanog Guangzhou 510301 Peoples R China China Meteorol Adm Natl Climate Ctr Lab Climate Studies Beijing 100081 Peoples R China China Meteorol Adm Natl Climate Ctr CMA NJU Joint Lab Climate Predict Studies Beijing 100081 Peoples R China Xiongan Inst Meteorol Artificial Intellegence Xiongan 071708 Peoples R China Chinese Acad Sci Ctr Monsoon Syst Res Inst Atmospher Phys Beijing 100029 Peoples R China Univ Chinese Acad Sci Coll Earth & Planetary Sci Beijing 100049 Peoples R China Jinling Inst Technol Coll Intelligent Sci & Control Engn Nanjing 211169 Peoples R China

The increase in frequency and intensity of Extreme High-temperature Events (EHEs) over Central-Eastern China (CEC) in recent decades has severely impacted social development and livelihoods. Using observation and reanalysis datasets, this study explores the effect of the East Asian subtropical westerly jet stream (EAJ) on the CEC EHEs for the summers spanning 1979-2020. Considering its general relative location to the right side of the upper-level jet stream exit region, CEC would theoretically suffer more EHEs with a stronger and northwardly-shifted EAJ in summer due to the likelihood of abnormal subsidence induced by the EAJ. However, such an EAJ-EHE connection has been unstable over the past four decades but has displayed an evident interdecadal change. Before the late 1990s, the interannual variation of the EAJ was manifested mainly by its meridional displacement in the northeastern part of East Asia;thus, the atmospheric responses were essentially located to the east of CEC, exerting less of an influence on the CEC EHEs. However, since the late 1990s, the EAJ variation has featured an intensity change in its center over the northwest portion of the CEC, which has resulted in a westward shift in atmospheric responses to cover the CEC region. Therefore, the EAJ could potentially affect the summer CEC EHEs during 2000-21. Our findings offer support for an in-depth understanding of the formation mechanisms of extreme weather/climate events of this nature and thus provide a scientific reference for seasonal climate predictions.

关键词： summer extreme high-temperature events East Asian subtropical jet atmospheric circulation central-eastern China interdecadal change

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The Enhancing Effect of the East Asian Subtropical Westerly Jet on Summer Extreme High-Temperature Events over Central-Eastern China Since the Late 1990s

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Advances in Atmospheric Sciences 2025年第03期 453-466页

作者： Chujie GAO Yuyu NIU Gen LI shanlei sun Bo LU Chaofan LI Bei XU Jinglong HUANG Xiubao sun College of Oceanography & Key Laboratory of Marine Hazards Forecasting Ministry of Natural Resources Hohai University Key Laboratory of Meteorological Disaster Ministry of Education (KLME) & Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD) Nanjing University of Information Science and Technology State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of Sciences Laboratory for Climate Studies and CMA-NJU Joint Laboratory for Climate Prediction Studies National Climate Center China Meteorological Administration Xiong'an Institute of Meteorological Artificial Intellegence Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences College of Earth and Planetary Sciences University of the Chinese Academy of Sciences College of Intelligent Science and Control Engineering Jinling Institute of Technology

The increase in frequency and intensity of Extreme High-temperature Events(EHEs) over Central-Eastern China(CEC)in recent decades has severely impacted social development and livelihoods. Using observation and reanalysis datasets, this study explores the effect of the East Asian subtropical westerly jet stream(EAJ) on the CEC EHEs for the summers spanning 1979–2020. Considering its general relative location to the right side of the upper-level jet stream exit region,CEC would theoretically suffer more EHEs with a stronger and northwardly-shifted EAJ in summer due to the likelihood of abnormal subsidence induced by the EAJ. However, such an EAJ–EHE connection has been unstable over the past four decades but has displayed an evident interdecadal change. Before the late 1990s, the interannual variation of the EAJ was manifested mainly by its meridional displacement in the northeastern part of East Asia; thus, the atmospheric responses were essentially located to the east of CEC, exerting less of an influence on the CEC EHEs. However, since the late 1990s,the EAJ variation has featured an intensity change in its center over the northwest portion of the CEC, which has resulted in a westward shift in atmospheric responses to cover the CEC region. Therefore, the EAJ could potentially affect the summer CEC EHEs during 2000–21. Our findings offer support for an in-depth understanding of the formation mechanisms of extreme weather/climate events of this nature and thus provide a scientific reference for seasonal climate predictions.

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Evaluating the Capabilities of Soil Enthalpy, Soil Moisture and Soil Temperature in Predicting Seasonal Precipitation

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Advances in Atmospheric Sciences 2018年第4期35卷 445-456页

作者： Changyu ZHAO Haishan CHEN shanlei sun Key Laboratory of Meteorological Disaster Ministry of Education (KLME)/International Joint Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)Nanjing University of Information Science and Technology (NUIST) School of Atmospheric Science Nanjing University of Information Science and Technology (NUIST)

Soil enthalpy （H） contains the combined effects of both soil moisture （w） and soil temperature （T） in the land surface hydrothermal process. In this study, the sensitivities of H to w and T are investigated using the multi-linear regression method. Results indicate that T generally makes positive contributions to H, while w exhibits different （positive or negative） impacts due to soil ice effects. For example, w negatively contributes to H if soil contains more ice; however, after soil ice melts, w exerts positive contributions. In particular, due to lower w interannual variabilities in the deep soil layer （i.e., the fifth layer）, H is more sensitive to T than to w. Moreover, to compare the potential capabilities of H, w and T in precipitation （P） prediction, the Huanghe-Huaihe Basin （HHB） and Southeast China （SEC）, with similar sensitivities of H to w and T, are selected. Analyses show that, despite similar spatial distributions of H-P and T-P correlation coefficients, the former values are always higher than the latter ones. Furthermore, H provides the most effective signals for P prediction over HHB and SEC, i.e., a significant leading correlation between May H and early summer （June） P. In summary, H, which integrates the effects of T and w as an independent variable, has greater capabilities in monitoring land surface heating and improving seasonal P prediction relative to individual land surface factors （e.g., T and w）.

关键词： seasonal precipitation prediction land surface process soil enthalpy soil moisture soil temperature

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Regional Features and Seasonality of Land–Atmosphere Coupling over Eastern China

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Advances in Atmospheric Sciences 2018年第6期35卷 689-701页

作者： Chujie GAO Haishan CHEN shanlei sun Bei XU Victor ONGOMA Siguang ZHU Hedi MA Xing LI Key Laboratory of Meteorological Disaster Ministry of Education (KLME)/International Joint Research Laboratory of Climate and Environment Change (ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD)Nanjing University of Information Science and Technology College of Atmospheric Science Nanjing University of Information Science and Technology Department of Meteorology South Eastern Kenya University

Land-atmosphere coupling is a key process of the climate system, and various coupling mechanisms have been proposed before based on observational and numerical analyses. The impact of soil moisture（SM） on evapotranspiration（ET） and further surface temperature（ST） is an important aspect of such coupling. Using ERA-Interim data and CLM4.0 offline simulation results, this study further explores the relationships between SM/ST and ET to better understand the complex nature of the land-atmosphere coupling（i.e., spatial and seasonal variations） in eastern China, a typical monsoon area. It is found that two diagnostics of land-atmosphere coupling（i.e., SM-ET correlation and ST-ET correlation） are highly dependent on the climatology of SM and ST. By combining the SM-ET and ST-ET relationships, two ＂hot spots＂ of land-atmosphere coupling over eastern China are identified： Southwest China and North China. In Southwest China, ST is relatively high throughout the year, but SM is lowest in spring, resulting in a strong coupling in spring. However, in North China, SM is relatively low throughout the year, but ST is highest in summer, which leads to the strongest coupling in summer. Our results emphasize the dependence of land-atmosphere coupling on the seasonal evolution of climatic conditions and have implications for future studies related to land surface feedbacks.

关键词： soil moisture surface temperature land-atmosphere interaction evapotranspiration coupling

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Hotspots of the sensitivity of the land surface hydrological cycle to climate change

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Chinese Science Bulletin 2013年第28期58卷 3682-3688页

作者： HUA WenJian CHEN HaiShan ZHU SiGuang sun shanlei YU Miao ZHOU LiMing Key Laboratory of Meteorological Disaster Ministry of EducationNanjing University of Information Science & Technology College of Global Change and Earth System Science Beijing Normal University Applied Hydrometeorological Research Institute Nanjing University of Information Science & Technology Department of Atmospheric and Environmental Sciences University at AlbanyState University of New York

Due to the shortage of the global observational data of the terrestrial hydrological variables,the understanding of how surface hydrological processes respond to climate change is still *** this study,the Community Land Model(CLM4.0)with high resolution atmospheric forcing data is selected to simulate the global surface hydrological quantities during the period 1948–2006and to investigate the spatial features of these quantities in response to climate change at the regional *** sensitivities of evaporation and runoff with respect to the dominant climate change factors(*** and precipitation)derived from the concept of climate elasticity are *** show that evaporation has a declining trend with a rate of 0.7 mm per decade,while runoff shows a weak increasing trend of 0.15 mm per decade over the global land *** of the hotspots in the hydrological cycle indicate that the spatial distributions for evaporation and runoff are similar over many areas in central Asia,Australia,and southern South America,but differ largely in high *** is also found that,the evaporation hotspots in arid regions are mainly associated with the changes in *** sensitive analysis suggests that the hydrological quantities show a rather complicated spatial dependency of response of the water cycle to the different climate factors(temperature and precipitation).

关键词：敏感性分析气候变化水文循环陆地表面空间特征高纬度地区蒸发率水文变量

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气候变化对鄱阳湖流域径流的影响

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河海大学学报（自然科学版） 2020年第1期48卷 39-45页

作者：邓鹏孙善磊黄鹏年南京信息工程大学水文与水资源工程学院江苏南京210044

为研究未来气候变化对鄱阳湖流域径流的影响,构建了0.1°分辨率VIC水文模型,采用均匀设计法率定参数。应用CMIP5多模式气象数据结果驱动VIC模型,对RCP2.6、RCP4.5和RCP8.5情景下的鄱阳湖流域径流变化进行评估。结果表明,在RCP2.6和RCP4.... 详细信息

为研究未来气候变化对鄱阳湖流域径流的影响,构建了0.1°分辨率VIC水文模型,采用均匀设计法率定参数。应用CMIP5多模式气象数据结果驱动VIC模型,对RCP2.6、RCP4.5和RCP8.5情景下的鄱阳湖流域径流变化进行评估。结果表明,在RCP2.6和RCP4.5情景下未来期(2026—2040年)较基准期(2006—2020年)径流呈增加趋势,在RCP8.5情景下径流呈减少趋势。各种模式都在汛期径流有增加趋势,枯季径流有减小趋势,发生水文极端事件的态势更加明显。

关键词：气候变化鄱阳湖径流水文模型 VIC模型气候模式

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基于MODIS卫星资料研究三峡工程对库区地表温度的影响

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气候变化研究进展 2014年第3期10卷 226-234页

作者：高蕾陈海山孙善磊南京信息工程大学气象灾害预报预警与评估协同创新中心/气象灾害教育部重点实验室南京210044 南京信息工程大学大气科学学院南京210044 南京信息工程大学应用水文气象研究院南京210044

利用2001—2012年MODIS地表温度资料,分析了三峡库区蓄水后水体对冬、夏两季白天和夜间地表温度的影响。由于下垫面水陆和地势的影响,白天地表温度高值区主要位于四川盆地东部,夜间则主要出现在长江江面;温度日较差在长江和海拔较高地... 详细信息

利用2001—2012年MODIS地表温度资料,分析了三峡库区蓄水后水体对冬、夏两季白天和夜间地表温度的影响。由于下垫面水陆和地势的影响,白天地表温度高值区主要位于四川盆地东部,夜间则主要出现在长江江面;温度日较差在长江和海拔较高地区较小,且夏季水体日较差小于冬季。分别用水体和I^X缓冲区地表温度减去XI缓冲区去除气候背景场影响,发现冬季白天地表温度趋势在水体及I^VI缓冲区由下降转为上升,夜间地表温度在相同距离内显著升高。利用蓄水后(2003—2012年)地表温度和日较差分别减去蓄水前(2001—2002年)剔除地形影响,发现:冬季,三峡工程水库蓄水对局地地表温度具有增温效果,且强度和范围夜间大于白天;夏季,对地表温度有降温作用,白天大于夜间;同时,冬、夏季的温度日较差减小;且水体对局地地表温度和日较差的影响随距水体距离的增加而减小,其影响范围基本维持在0~8 km范围内。

关键词：地表温度 MODIS卫星资料三峡工程库区

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淮河上游地区降雨径流分析及模拟

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河海大学学报（自然科学版） 2014年第5期42卷 377-381页

作者：邓鹏李致家郭元孙善磊南京信息工程大学水文气象学院江苏南京210044 河海大学水文水资源学院江苏南京210098

为了掌握淮河流域的水情信息,对淮河干流王家坝以上流域的降雨径流进行分析和模拟。采用流域内1985—2007年的站点历史资料对降雨径流进行分析,并且应用分布式SWAT模型,采用SCE-UA算法进行参数自动校准并进行检验,建立降雨径流月尺度模... 详细信息

为了掌握淮河流域的水情信息,对淮河干流王家坝以上流域的降雨径流进行分析和模拟。采用流域内1985—2007年的站点历史资料对降雨径流进行分析,并且应用分布式SWAT模型,采用SCE-UA算法进行参数自动校准并进行检验,建立降雨径流月尺度模拟模型。分析发现流域年降水量50%集中在6—8月,并且淮南山区息县及潢川子流域的月平均径流和径流系数都大于属于淮北平原区的班台子流域。息县、潢川、班台及王家坝月径流的模拟结果确定性系数分别达到0.77、0.81、0.69和0.80。淮河上游地区的降雨存在明显的季节集中性,并且淮南山区和淮北平原区因地势不同使产流特征不同。流域中水利工程设施的应用对天然降雨径流过程的改变产生很大影响,使班台子流域的模拟结果差于其他子流域。研究区属于径流资料短缺地区,分布式水文模型的建立充分反映了下垫面的已知信息,弥补了径流资料短缺的不足之处。

关键词：淮河上游地区降雨径流水文模拟分布式水文模型

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Efficient and simple synthesis of B_(2)O_(3)-Al_(2)O_(3)nanocomposites assisted by deep eutectic solvent for production of 5-hydroxymethylfurfural from glucose

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Nano Research 2025年第1期18卷 236-248页

作者： Yuchen Wang Kai Rong shanlei Chang Youxing Fang Shaojun Dong State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China College of Chemistry Jilin UniversityChangchun 130012China

The catalytic conversion of glucose to high valueadded platform chemical 5-hydroxymethylfurfural(HMF)is a promising biorefinery process,and alumina-boria catalysts are considered to be green and mild solid acid catalysts for this catalytic ***,compared to the common synthesis methods with complicated steps,we reported a simple and efficient strategy to prepare B_(2)O_(3)-Al_(2)O_(3)nanocomposites by calcining cost-effective glucose-urea deep eutectic solvent(DES)solution containing the *** prepared B_(2)O_(3)-Al_(2)O_(3)nanocomposites exhibited an open three-dimensional skeleton and two-dimensional porous lamellar substructure,endowing them with a high specific surface area(228.27 m2/g).The introduction of boron changed the ratios of different aluminum species(AlⅣ,AlⅤ,and AlⅥ)and borate species(BO3 and BO4),thus further affecting the acidity and the types of acid sites of the *** prepared B_(2)O_(3)-Al_(2)O_(3)bifunctional acid catalysts possessing abundant Lewis acid sites and adjustable Brønsted acid sites showed complete glucose conversion and 55.38%of HMF yield under the optimum *** study proposed a concise method to synthesize alumina-boria solid acid catalysts assisted by glucose-urea *** hope to extend the application and prospect of this efficient and simple synthesis strategy.

关键词： 5-hydroxymethylfurfural(HMF) deep eutectic solvent glucose alumina-boria acid catalyst

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欧亚大陆土壤焓异常持续性的时空变化特征

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气象科学 2018年第1期38卷 19-27页

作者：赵昶昱陈海山孙善磊南京信息工程大学气象灾害预报预警与评估协同创新中心/气候与环境变化国际合作联合实验室/气象灾害教育部重点实验室南京210044 南京信息工程大学大气科学学院南京210044

土壤焓作为一种综合考虑地表状况(如土壤湿度、土壤温度等)的特殊陆面因子,可以直接从能量角度反映陆地下垫面的热力状况,故探讨土壤焓异常持续性的相关特征,有助于加深理解地表热力异常对气候的影响。本研究基于陆面过程模式CLM4.0模... 详细信息

土壤焓作为一种综合考虑地表状况(如土壤湿度、土壤温度等)的特殊陆面因子,可以直接从能量角度反映陆地下垫面的热力状况,故探讨土壤焓异常持续性的相关特征,有助于加深理解地表热力异常对气候的影响。本研究基于陆面过程模式CLM4.0模拟的土壤温度、土壤液态水和土壤固态水及土壤物质类型(IGBP地表属性),分别计算了欧亚大陆冬季和夏季土壤干物质焓、土壤液态水焓和土壤固态水焓及土壤焓(前三者之和);由于土壤温度和土壤固、液态水含量的差异,浅层土壤焓及其三个组元表现出明显的区域性和季节性特征;欧亚大陆冬季土壤焓异常持续性总体较夏季强,尤其是中高纬地区;另外,土壤干物质焓、液态水焓的纬度和季节性差异也体现在对近地面大气的热力强迫上,具体表现为土壤干物质焓、液态水焓分别与感热、潜热密切相关。本研究通过较为细致地分析土壤焓异常持续性的时空变化特征,为进一步开展下垫面热力异常(以土壤焓表征)的气候效应提供了重要的信息参考。

关键词：土壤焓感热和潜热持续性季节性差异欧亚大陆

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