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A tripole winter precipitation change pattern around the Tibetan Plateau in the late 1990s

Atmospheric and Oceanic Science Letters 2022年第6期15卷 15-21页

作者： yali zhu Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Key Laboratory of Meteorological Disaster/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University for Information Science and TechnologyNanjingChina

Classical monsoon dynamics considers the winter/spring snow amount on the Tibetan Plateau(TP)as a major factor driving the East Asian summer monsoon(EASM)for its direct influence on the land-sea thermal ***,the TP snow increased and decreased after the late 1970s and 1990s,respectively,accompanying the two major interdecadal changes in the *** studies have explored the possible mechanisms of the EASM interdecadal variations,and change in TP snow is considered as one of the major drivers,few studies have illustrated the underlying mechanisms of the interdecadal changes in the winter TP *** study reveals a tripole pattern of change,with decreased winter precipitation over the TP and an increase to its north and south after the late *** analyses through numerical experiments demonstrate that the tropical Pacific SST changes in the late 1990s can robustly affect the winter TP precipitation through regulating the Walker and regional Hadley *** cooling over the tropical central-eastern Pacific can enhance the Walker circulation cell over the Pacific and induce ascending motion anomalies over the Indo-Pacific *** anomalies further drive descending motion anomalies over the TP and ascending motion anomalies to the north through regulating the regional Hadley ***,the positive-negative-positive winter precipitation anomalies around the TP are *** study improves the previously poor understanding of TP climate variation at interdecadal timescales.

关键词： Winter precipitation Tibetan plateau Interdecadal change East asian westerly jet stream Westerly-monsoon interaction

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Relative contribution of the anthropogenic forcing and natural variability to the interdecadal shift of climate during the late 1970s and 1990s

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Science Bulletin 2016年第5期61卷 416-424页

作者： yali zhu Tao Wang Huijun Wang Nansen-zhu International Research Centre Chinese Academy of Sciences Beijing 100029 China Climate Change Research Centre Chinese Academy of Sciences Beijing 100029 China Nanjing University of Information Science and Technology Nanjing 210044 China

Global warming accelerated after the late1970 s and slowed down after the late 1990 s, accompanying the significant interdecadal changes in the regional *** hypothesized that the interdecadal changes linearly consisted of two independent components, anthropogenic forcing and natural decadal variability, which can be represented simply by the radiative forcing effect of carbon dioxide (RFCO_2) and the Pacific Decadal Oscillation(PDO), respectively. The combined effect of the RFCO_2 and PDO could explain the majority of the surface temperature changes during the late 1970 s and 1990 s, but the magnitudes of the relative contribution of the RFCO_2 and the PDO are inconsistent in different regions. For both the surface temperature and geopotential height, the RFCO_2 could induce significantly positive anomalies over almost the entire globe for these two shifts, exhibiting a larger magnitude in the mid–high latitudes and in the late 1990 s *** PDO could induce opposite anomalies for the two interdecadal shifts due to its phase transitions(negativepositive–negative). Furthermore, for the shift in the late 1970s, both the RFCO2(53.7 %–66.7 %) and the PDO(33.3 %–46.3 %) were important in regulating the tropical geopotential height, whereas the RFCO_2 dominated the changes in the mid-latitudes. For the western Pacific subtropical high, the RFCO2(PDO) could explain 52.3 %–62.1 %(37.9 %–47.7 %) of the change. The negative effect of the PDO counteracted most of the RFCO_2 effects for the late 1990 s shift.

关键词： Anthropogenic forcing Natural decadal variability Global warming Surface temperature Geopotential height

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Influence of Internal Decadal Variability on the Summer Rainfall in Eastern China as Simulated by CCSM4

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Advances in Atmospheric Sciences 2016年第6期33卷 706-714页

作者： yali zhu Tao WANG Jiehua MA Nansen-zhu International Research Centre Chinese Academy of Sciences Climate Change Research Centre Chinese Academy of Sciences

The combined impact of the Pacific Decadal Oscillation （PDO） and Atlantic Multidecadal Oscillation （AMO） on the summer rainfall in eastern China was investigated using CCSM4. The strongest signals occur with the combination of a positive PDO and a negative AMO （＋PDO- AMO）, as well as a negative PDO and a positive AMO （-PDO ＋ AMO）. For the ＋PDO- AMO set, significant positive rainfall anomalies occur over the lower reaches of the Yangtze River valley （YR）, when the East Asian summer monsoon becomes weaker, while the East Asian westerly jet stream becomes stronger, and ascending motion over the YR becomes enhanced due to the jet-related secondary circulation. Contrary anomalies occur over East Asia for the -PDO ＋ AMO set. The influence of these two combinations of PDO and AMO on the summer rainfall in eastern China can also be observed in the two interdecadal rainfall changes in eastern China in the late 1970s and late 1990s.

关键词： Pacific Decadal Oscillation Atlantic Multidecadal Oscillation eastern China summer rainfall CCSM4

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The relationship between the Arctic Oscillation and ENSO as simulated by CCSM4

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Atmospheric and Oceanic Science Letters 2016年第3期9卷 198-203页

作者： zhu yali WANG Tao Nansen-zhu International Research Centre Chinese Academy of Sciences Climate Change Research Centre Chinese Academy of Sciences

The correlation between the Arctic Oscillation （AO） and ENSO reflects the strength of the interaction between climate systems in the low and high latitudes. Based on the long-term （501 years） control simulation of CCSM4, the authors investigated the linkage between the AO and ENSO in boreal winter. Based on the correlation coefficients between them, the authors divided the entire period into two groups： one that included the years with statistically significant correlations （G1）, and the other the years with insignificant correlations （G2）. in G1, the AO-related atmospheric circulation pattern resembles the ENSO-related one. The Aleutian Low （AL） acts as a bridge linking these two modes, in G2, however, the AO and ENSO signals are confined to the mid-high and mid-low latitudes, respectively. There is no significant linkage between the AO and ENSO in boreal winter, showing a low correlation coefficient. Further analysis suggests that changes in the climatological features, including the strengthened AO, the negative Pacific Decadal Oscillation phase, and the weakened AL, may be responsible for the enhanced relationships.

关键词： Arctic Oscillation ENSO CCSM4 Aleutian Low climate interaction betweenlow and high latitude

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A 2D Metal-Organic Framework Based on 9-（Pyridin-4-yl）-9H- carbazole-3,6-dicarboxylic Acid： Synthesis, Structure and Properties

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Chinese Journal of Chemistry 2017年第12期35卷 1869-1874页

作者： Xinhui Zhou yali zhu Liang Li Wei Huang Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials Nanjing University of Posts & Telecommunications Nanjing Jiangsu 210023 China Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (Nanjing Tech) Nanjing Jiangsu 211816 China

A metal-organic framework （MOF） formulated as [Cd2（μ3-L）2（DMF）4]·H2O （CdL） [H2L=9-（pyridin-4-yl）- 9H-carbazole-3,6-dicarboxylic acid, DMF=N,N-dimethylformamide] was synthesized under solvothermal condition. Crystal structural analysis reveals that CalL features the layered 2D framework with L2- ligands as 3-connected nodes. The compound CdL emits blue-violet light with the narrow emission peak and the emission maximum at 414 nm upon excitation at the maximum excitation wavelength of 340 nm. The compound CalL has a similar emission spectrum curve to the free H2L ligand that indicates the emission of compound CdL should be originated from the coordinated L2 ligands.

关键词： metal-organic frameworks 9-(pyridin-4-yl)-9H-carbazole-3,6-dicarboxylic acid cadmium complex crystal structure

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A water-stable metal-organic framework as a luminescent Fe^(3+) sensor under weak acidic and weak basic conditions

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Science China Chemistry 2017年第12期60卷 1581-1587页

作者： yali zhu Xinhui Zhou Liang Li Yujian You Wei Huang Key Laboratory for Organic Electronics and Information Displays & Institute of Advanced Materials Nanjing University of Posts &Telecommunications Key Laboratory of Flexible Electronics & Institute of Advanced Materials Jiangsu National Synergetic Innovation Center for Advanced Materials Nanjing Tech University

A three-dimensional （3D） metal-organic framework （MOF） ZnL＇O.5H20＂O.75DMF （H2L=9-（pyridin-4-yl）-9H-carbazole- 3,6-dicarboxylic acid, DMF=N,N-dimethylformamide） has been synthesized under solvotherrnal condition. Crystal structure analysis shows that, in ZnL, each dinuclear Zn2（COO）2 unit is doubly-bridged to the other two by the carbazole moieties to form the 1D chains, which are further connected together by pyridine moieties to lead to the 3D framework. ZnL exhibits both high structural stability and good luminescent stability in water with the pH range of 4-10. ZnL displays the luminescent quenching response for Fe3＋ in water with good linear correlation between the quenching efficiency and the concentration with Ksv of 10800 M 1 in the low concentration range of 0-0.1 mM. Interestingly, it is observed that the sensing performance for Fe3＋ is stable in the pH range of 4-9, enabling ZnL to detect Fe3＋ ions in weak acidic and weak basic solutions.

关键词： 9-(pyridin-4-yl)-9H-earbazole-3,6-dicarboxylie acid MOFs water stability Fe3+ sensor pH

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Interdecadal changes in the frequency of winter extreme cold events in North China during 1989–2021

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Atmospheric and Oceanic Science Letters 2024年第4期17卷 1-7页

作者： yali zhu Fangwu Song Dong Guo Nansen‐zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjingChina Carbon Neutrality Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

全球变暖背景下,极端天气气候事件的变化受到关注.本文研究发现, 1989-2021年期间,华北地区极端冷日数在2003和2013年发生了年代际变化.极端冷日数先增加后减少. 2003-2012年,西伯利亚-乌拉尔高压偏强,极地西风急流偏弱,有利于冷空气南... 详细信息

全球变暖背景下,极端天气气候事件的变化受到关注.本文研究发现, 1989-2021年期间,华北地区极端冷日数在2003和2013年发生了年代际变化.极端冷日数先增加后减少. 2003-2012年,西伯利亚-乌拉尔高压偏强,极地西风急流偏弱,有利于冷空气南下入侵华北地区,华北极端冷日数偏多.而在1989-2002年和2013-2021年,情况相反.虽然三个时段华北极端冷日的强度没有显著差异,但与其相联系的冷空气强度变得更强, 2013-2021年冷空气中心区域往西北扩张到了贝加尔湖以西地区.

关键词：华北极端冷事件西伯利亚–乌拉尔高压北大西洋涛动极地急流东亚西风急流

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Lanthanide-organic frameworks based on terphenyl-tetracarboxylate ligands:syntheses,structures,optical properties and selective sensing of nitro explosives

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Science China Chemistry 2017年第8期60卷 1130-1135页

作者： Zhou,Xinhui zhu,yali Li,Liang Yang,Tao Wang,Jin Huang,Wei Key Laboratory for Organic＇ Electronics and Infot~ation Displays Institute of Advanced Materials Nanjing University of Posts ＆ Telecommunications Nanjing 210023 China Key Laboratory of Flexible Electronics Institute of Advanced Materials Jiangsu National Synergetic innovation Center Jbr Advanced Materials Nanjing Tech University Nanjing 211816 China School of College of Opto-Electronic Engineering Nanjing University of Posts and Telecommunications Narding 210023 China

Three isostructural three-dimensional （3D） lanthanide-based metal-organic frameworks [Ln2L（H2L）（NMP）2]＇H20 （Ln=Sm（l）, Eu （2）, Gd （3）; H4L= 1,1 ＇：4＇, 1 ＂-terphenyl-2＇,4,4＂,5＇-tetracarboxylic acid; NMP=N-methyl-2-pyrrolidone） have been synthesized and structurally characterized. In 1-3, two Ln3＋ ions are doubly-bridged by two oxygen atoms of two carboxylate groups to form the dinuclear Lnz（Oco ）a unit. Each Ln2（Ocoo ）2 unit links with four H2L2 ligands and four L4- ligands to lead to the 3D framework, which can be rationalized as a new trinodal 4,4,8-connected （44.62）（45.6）（412.616） topological network by considering the dinuclear Ln2（Ocoo ）2 units as 8-connected nodes and L4-/H2L2- ligands as planar 4-connected nodes, respectively. 1 and 3 exhibit blue emission originated from the ligand with the emission maximum at 384 nm, while 2 shows intense characteristic red emission of Eu3＋ ions and weak ligand-centered emission. Moreover, 2 has fluorescent quenching response towards the aromatic nitro compounds, especially for the 3,4-dinitrotoluene （3,4-DNT） with the linear Stern-Volmer relationship in the concentration range of 0-1 mM and the quenching constant （Ksv） of 2.084-103 M 1.

关键词： lanthanide metal-organic frameworks(MOFs) sensor nitro explosives

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Interdecadal change in the South Asian summer monsoon rainfall in 2000 and contributions from regional tropical SST

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Atmospheric and Oceanic Science Letters 2019年第6期12卷 399-408页

作者： MA Haoyue zhu yali HUA Wei School of Atmospheric Sciences Chengdu University of Information TechnologyChengduSichuan ProvinceChina Nansen-zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjingChina

The drying trend in the South Asian summer monsoon(SASM)area has been a focus of monsoon rainfall studies in the last two ***,this study reveals that a signi cant interdecadal change in the SASM rainfall occurred in approximately the year *** spatial inhomo-geneity was a feature of this change,with increased rainfall over the southern part of the India Pakistan border area that extends from the Arabian Sea,as well as in the western Bay of ***,there was decreased rainfall over the southern SASM and the western coast of the Indian *** experiments using CAM4 show that global SST changes can induce general changes in the SASM circulation consistent with *** tropical Pacific/Indian Ocean SST anomalies dominated the Walker and the regional Hadley circulation changes,respectively,while the descending motion anomalies over the southern SASM were further enhanced by the warmer tropical Atlantic ***,the spatial inhomogeneity of this interdecadal change in the SASM rainfall needs further study.

关键词： South Asian summer monsoon Atlantic Multidecadal Oscillation Pacific Decadal Oscillation Indian Ocean SST summer rainfall

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Interdecadal changes in the western Siberian summer mean and extreme rainfall during 1982-2021

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Atmospheric and Oceanic Science Letters 2024年第3期17卷 37-41页

作者： yali zhu Fangwu Song Dong Guo Nansen-zhu International Research Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and TechnologyNanjingChina Carbon Neutrality Research Center Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

本文研究发现,西西伯利亚夏季降水在1995年后显著增加,2012年后又有所减少,极端降水日数和强度呈现一致的变化特征.伴随这两次降水的年代际增加/减少,西西伯利亚上空出现异常气旋/反气旋和水汽幅合/幅散.极端降水发生时的区域环流特征... 详细信息

本文研究发现,西西伯利亚夏季降水在1995年后显著增加,2012年后又有所减少,极端降水日数和强度呈现一致的变化特征.伴随这两次降水的年代际增加/减少,西西伯利亚上空出现异常气旋/反气旋和水汽幅合/幅散.极端降水发生时的区域环流特征在三个时段基本一致:西西伯利亚低空出现气旋性异常,高空为西北-东南向的异常气旋-反气旋偶极子型.1995-2011年期间,极端降水日数更多,强度更强,上述异常环流型也更强.

关键词：西伯利亚夏季降水年代际变化乌拉尔高压北大西洋波流相互作用

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