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An assessment of summer sensible heat flux on the Tibetan Plateau from eight data sets

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Science China Earth Sciences 2012年第5期55卷 779-786页

作者： zhu xiaying LIU YiMin WU GuoXiong State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics(LASG) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China National Climate Center China Meteorological AdministrationBeijing 100081China

The eight datasets of the summer (June-August) surface sensible heat (SH) flux over the Tibetan Plateau (TP) are compared on the time scales of the climatology,interannual variability and linear trend during *** data sets include five reanalyses (National Center for Environmental Prediction reanalysis,NCEPR1 and NCEPR2,NCEP climate forecast system reanalysis,CFSR,Japanese 25-year reanalysis,JRA,and European Centre for Medium Range Weather Forecasts reanalysis,ERA40),two land surface model outputs (Noah model data of Global Land Data Assimilation System version 2,G2_Noah,and Simple Biosphere version 2 output by Yang et al.,YSiB2),and estimated SH based on China Meteorological Administration (CMA) station observations,*** results suggest that the summer SH on the TP differs from one dataset to another due to different inputs and ***,the ERA40 and JRA distribute rather uniformly while the other six products show similar regional disparities,that is,larger in the west than in the east and stronger in the north and the south than in the middle of the *** mean magnitude of the SH averaged over the 76 stations above the TP varies considerably among each dataset with the difference of more than 20 W m?2 between the maximum (G2_Noah) and minimum (ObCh).Nevertheless,they are consistent in the interannual variability and mostly show a significant decreasing trend corresponding to the weakening surface wind speed,in spite of the distinct trend for the ground-air temperature difference among the different data *** two consistencies indicate the particular availability of the SH products,which is helpful to the relevant climate dynamics research.

关键词： Tibetan Plateau sensible heat flux assessment interannual variation linear trend

Meridional seesaw-like distribution of the Meiyu rainfall over the Changjiang-Huaihe River Valley and characteristics in the anomalous climate years

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Chinese Science Bulletin 2007年第17期52卷 2420-2428页

作者： zhu xiaying HE JinHai WU ZhiWei Key Laboratory of Meteorological Disaster (KLME) Nanjing University of Information Science & Technology Nanjing 210044 China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of AtmosphericPhysics Chinese Academy of Sciences Beijing 100029 China

Although Meiyu rainfall has its in-phase spatial variability over the Changjiang-Huaihe River Valley (CHRV) in most years, it is distributed in some years like a seesaw to the north and south of the Changjiang River, when the precipitation tends to be nearly normal throughout the valley, which would inevitably increase difficulties of making short-term prediction of the rainfall. For this reason, EOF analysis is made on 15 related stations’ precipitation from June to July during 1951─2004, revealing that the EOF2 mode shows largely a north-south seesaw-like pattern, and thereby classifying Meiyu patterns into two types: "northern drought and southern flood (NDSF)" and "northern flood and southern drought (NFSD)". Afterwards, the authors investigated ocean-atmospheric characteristics when these two anomalous types occured using the NCEP reanalysis (version 1) and the extended reconstructed SSTs (version 2). The results show that in the NDSF years, the low-level frontal area and moisture convergence center lie more southward, accompanied by weaker subtropical summer mon- soon over East Asia, with the western Pacific subtropical high and 200 hPa South Asia High being more southward. Both the Northern and Southern Hemisphere Annular Modes are stronger than normal in preceding February; SST is higher off China during boreal winter and spring and the opposite happens in the NFSD years. Also, this seesaw-form Meiyu rainfall distribution might be affected to some degree by the previous ENSO event.

关键词：气候反常梅雨长江-黄河流域降雨空间分布

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植物甾醇酯的生物活性及其运载体系研究进展

河南工业大学学报（自然科学版） 2024年第3期45卷 124-131页

作者：刘宗杰赵骞朱夏颖潘丽张傲涵王勇浩张林张玉焕河南工业大学国家粮食和物资储备局粮油食品工程技术研究中心/河南省重点实验室河南郑州450001 鄢陵县紫荆生物科技有限公司河南许昌461200 鄢陵中林园林工程有限公司河南许昌461200

植物甾醇酯具有降胆固醇、抗氧化、抗心血管疾病等多种生理功能,然而稳定差、水溶性差以及生物利用率低等缺点限制了其在食品、医药以及化妆品领域的应用,因此选择合适的运载体系对其进行递送以拓宽其应用是目前重要的研究方向。对植物... 详细信息

植物甾醇酯具有降胆固醇、抗氧化、抗心血管疾病等多种生理功能,然而稳定差、水溶性差以及生物利用率低等缺点限制了其在食品、医药以及化妆品领域的应用,因此选择合适的运载体系对其进行递送以拓宽其应用是目前重要的研究方向。对植物甾醇酯的理化性质和生物活性进行总结,并综述了多种运载体系递送植物甾醇酯的研究进展,提出现有运载体系存在的一些问题以及改进方法,以期为植物甾醇酯新型运载体系的研究提供思路。

关键词：植物甾醇酯脂肪酸生物活性运载体系

A Precursory Signal of June-July Precipitation over the Yangtze River Basin: December-January Tropospheric Temperature over the Tibetan Plateau

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Advances in Atmospheric Sciences 2023年第11期40卷 1986-1997页

作者： xiaying zhu Mingzhu YANG Ge LIU Yanju LIU Weijing LI Sulan NAN Linhai SUN National Climate Center Beijing 100081China State Key Laboratory of Severe Weather Chinese Academy of Meteorological SciencesBeijing 100081China Collaborative Innovation Centre on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjing 210044China

The prediction of summer precipitation over the Yangtze River basin(YRB)has long been challenging,especially during June-July(JJ),when the mei-yu generally *** study explores the potential signal for the YRB precipitation in JJ and reveals that the Tibetan Plateau tropospheric temperature(TPTT)in the middle and upper levels during the preceding December-January(DJ)is significantly correlated with JJ YRB *** close connection between the DJ TPTT anomaly with JJ YRB precipitation may be due to the joint modulation of the DJ ENSO and spring TP soil *** lagged response to an anomalously cold TPTT during the preceding DJ is a TPTT that is still anomalously cold during the following *** lower TPTT can lead to an anomalous anticyclone to the east of Lake Baikal,an anomalous cyclone at the middle latitudes of East Asia,and an anomalous anticyclone over the western North ***,the East Asian westerly jet shifts southward in response to the meridional thermal gradient caused by the colder troposphere extending from the TP to the east of Lake *** above-mentioned circulation anomalies constitute the positive anomaly of the East Asia-Pacific pattern,known to be conducive to more precipitation over the *** the DJ TPTT contains both the land(TP soil temperature)and ocean(ENSO)signals,it has a closer relationship with the JJ precipitation over the YRB than the DJ ENSO ***,the preceding DJ TPTT can be considered an alternative predictor of the JJ YRB precipitation.

关键词： Tibetan Plateau thermal condition Yangtze River precipitation prediction

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2023年汛期我国主要天气气候特征

中国防汛抗旱 2024年第1期34卷 8-13页

作者：孙林海竺夏英李威艾婉秀姜允迪曾红玲国家气候中心北京100081

利用中国气象局国家气象信息中心提供的气象观测数据,对2023年汛期(3月24日至11月16日)我国的天气气候特征进行了综合分析。结果表明,2023年汛期,我国气候状况总体偏差,呈现暖干特征,涝旱灾害明显。2023年汛期,全国平均降水量为2012年... 详细信息

利用中国气象局国家气象信息中心提供的气象观测数据,对2023年汛期(3月24日至11月16日)我国的天气气候特征进行了综合分析。结果表明,2023年汛期,我国气候状况总体偏差,呈现暖干特征,涝旱灾害明显。2023年汛期,全国平均降水量为2012年以来同期第2少(仅多于2022年同期),平均气温为历史同期第2高(仅低于2022年同期)。华北、东北、华南等地暴雨洪涝灾害重;华北和黄淮地区高温日数多、极端性强;西南地区春秋干旱明显;初台偏晚,登陆台风影响重。

关键词：气温降水气候特征气象灾害 2023年汛期

2023年中国气候异常特征及主要天气气候事件

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气象 2024年第2期50卷 246-256页

作者：竺夏英孙林海钟海玲支蓉艾婉秀姜允迪李威陈鲜艳邹旭恺王凌赵珊珊曾红玲王有民冯爱青朱晓金代潭龙郭艳君张颖娴李想龚振淞国家气候中心北京100081

2023年,我国气候主要表现为暖干的特征,全国平均气温10.71℃,较1991—2020年气候平均偏高0.82℃,为1951年以来最暖;全国平均降水量615.0 mm,较常年偏少3.9%,为2012年以来第二少。四季气温均较常年同期偏高,其中夏、秋季分别为历史同期... 详细信息

2023年,我国气候主要表现为暖干的特征,全国平均气温10.71℃,较1991—2020年气候平均偏高0.82℃,为1951年以来最暖;全国平均降水量615.0 mm,较常年偏少3.9%,为2012年以来第二少。四季气温均较常年同期偏高,其中夏、秋季分别为历史同期次高和最高;除秋季降水偏多外,其余三季降水均偏少。汛期(5—9月),全国平均降水量较常年同期偏少4.3%,为2012年以来第二少,我国中东部降水总体呈“中间多南北少”的分布。2023年,我国区域性气象干旱多发,西南地区遭遇冬春连旱;春季北方沙尘天气过程偏多;夏季前期,华北和黄淮遭受1961年以来最强高温过程;7月底至8月初,受台风杜苏芮影响,京津冀地区发生历史罕见极端强降水过程,华北地区出现“旱涝急转”;华西秋雨开始早、结束晚、雨量多;1月中旬发生年内最强寒潮过程;秋末冬初冷空气频繁入侵,12月华北和黄淮等地降雪日数偏多、积雪偏深。

关键词：气候异常特征极端天气气候事件气象灾害

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2016年秋季中国气候特征及其可能成因

气象 2017年第4期43卷 495-500页

作者：竺夏英宋文玲国家气候中心北京100081

2016年秋季,全国平均气温较常年同期偏高,降水异常偏多,创1961年以来历史同期之最,尤其是110°E以东地区,近一半台站偏多50%以上,这主要受秋季海温和大气环流异常的影响。在赤道中东太平洋冷海温发展的秋季,西太平洋副热带高压往往偏强... 详细信息

2016年秋季,全国平均气温较常年同期偏高,降水异常偏多,创1961年以来历史同期之最,尤其是110°E以东地区,近一半台站偏多50%以上,这主要受秋季海温和大气环流异常的影响。在赤道中东太平洋冷海温发展的秋季,西太平洋副热带高压往往偏强偏西偏北,自副热带到日本海附近容易出现异常反气旋式环流,有利于水汽向我国30°N以北地区输送,再加上秋季前期东北冷涡活动及中后期贝加尔湖地区低槽维持,冷暖空气交汇,使得北方地区降水偏多。而赤道西太平洋及暖池区海温偏高,对流活跃,台风活动频繁,给华南到江淮一带带来了异常多的降水。

关键词：降水偏多海温异常西太平洋副热带高压台风

Ammonia should be considered in field experiments mimicking nitrogen deposition

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Atmospheric and Oceanic Science Letters 2020年第3期13卷 248-251页

作者： PAN Yuepeng TIAN Shili WU Dianming XU Wen zhu xiaying LIU Chunyan LI Dejun FANG Yunting DUAN Lei LIU Xuejun WANG Yuesi State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry(LAPC) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Geographic Information Sciences Ministry of EducationSchool of Geographic SciencesEast China Normal UniversityShanghaiChina College of Resources and Environmental Sciences China Agricultural UniversityBeijingChina National Climate Center China Meteorological AdministrationBeijingChina Key Laboratory of Agro-ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangshaHunanChina CAS Key Laboratory of Forest Ecology and Management Institute of Applied EcologyChinese Academy of SciencesShenyangLiaoningChina State Key Laboratory of Environmental Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijingChina

Excess nitrogen deposition has significant impacts on water eutrophication,soil acidification,eleveted greenhouse gas emissions,and biodiversity *** impacts mostly derive from conventional manipulative experiments in the field by adding nitrogen solution directly onto grassland or forest *** forest ecosystems,previous field experiments have usually ignored the nitrogen cycles in the canopy,which are important in responses to airborne nitrogen *** whole-forest canopy nitrogen fertilization has recently been conducted to promote our understanding of nitrogen deposition processes,spraying nitrogen solution onto plants still largely ignores the dry deposition of ammonia(as well as other gaseous reactive nitrogen species).To date,there have been a limited number of field studies that have investigated the bi-directional exchange of ammonia between the atmosphere and plants,not to mention the impacts of ammonia on natural *** to the increasing trend of atmospheric ammonia concentrations worldwide and its dominant role in nitrogen deposition and haze pollution,the next generation of experiments should mimick nitrogen deposition on natural ecosystems by further considering the dry deposition of ammonia.

关键词： Nitrogen deposition wet deposition dry deposition ammonia air pollution

Asialoglycoprotein receptor 1 promotes SARS-CoV-2 infection of human normal hepatocytes

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Signal Transduction and Targeted Therapy 2024年第3期9卷 1199-1208页

作者： Xinyi Yang Xu Zheng Yuqi zhu xiaying Zhao Jun Liu Jiangna Xun Songhua Yuan Jun Chen Hanyu Pan Jinlong Yang Jing Wang Zhimin Liang Xiaoting Shen Yue Liang Qinru Lin Huitong Liang Min Li Fei Peng Daru Lu Jianqing Xu Hongzhou Lu Shibo Jiang Ping Zhao Huanzhang zhu State Key Laboratory of Genetic Engineering and Engineering Research Center of Gene Technology Ministry of EducationInstitute of GeneticsSchool of Life SciencesYiwu Research InstituteFudan UniversityShanghaiChina Department of Microbiology Faculty of Naval MedicineNaval Medical UniversityShanghai 200433China Scientific Research Center Shanghai Public Health Clinical CenterFudan UniversityShanghaiChina Department of Infectious Diseases and Immunology Shanghai Public Health Clinical CenterFudan UniversityShanghaiChina Changzheng Hospital Naval Medical UniversityShanghaiChina Key Laboratory of Medical Molecular Virology(MOE/NHC/CAMS) Shanghai Institute of Infectious Disease and BiosecuritySchool of Basic Medical SciencesFudan UniversityShanghaiChina Department of Infectious Diseases and Nursing Research Institution National Clinical Research Center for Infectious DiseasesThe Third People’s Hospital of ShenzhenShenzhenGuangdongChina

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)causes multi-organ damage,which includes hepatic dysfunction,as observed in over 50%of COVID-19 *** I converting enzyme(peptidyl-dipeptidase A)2(ACE2)is the primary receptor for SARS-CoV-2 entry into host cells,and studies have shown the presence of intracellular virus particles in human hepatocytes that express ACE2,but at extremely low ***,we asked if hepatocytes might express receptors other than ACE2 capable of promoting the entry of SARS-CoV-2 into *** address this question,we performed a genome-wide CRISPR-Cas9 activation library screening and found that Asialoglycoprotein receptor 1(ASGR1)promoted SARS-CoV-2 pseudovirus infection of HeLa *** Huh-7 cells,simultaneous knockout of ACE2 and ASGR1 prevented SARS-CoV-2 pseudovirus *** the immortalized THLE-2 hepatocyte cell line and primary hepatic parenchymal cells,both of which barely expressed ACE2,SARSCoV-2 pseudovirus could successfully establish an ***,after treatment with ASGR1 antibody or siRNA targeting ASGR1,the infection rate significantly dropped,suggesting that SARS-CoV-2 pseudovirus infects hepatic parenchymal cells mainly through an ASGR1-dependent *** confirmed that ASGR1 could interact with Spike protein,which depends on receptor binding domain(RBD)and N-terminal domain(NTD).Finally,we also used Immunohistochemistry and electron microscopy to verify that SARS-CoV-2 could infect primary hepatic parenchymal *** inhibiting ASGR1 in primary hepatic parenchymal cells by siRNA,the infection efficiency of the live virus decreased ***,these findings indicate that ASGR1 is a candidate receptor for SARS-CoV-2 that promotes infection of hepatic parenchymal cells.

关键词： ACE2 infection glycoprotein