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Modeling the impact of Australian Plate drift on Southern Hemisphere climate and environment

chinese Science Bulletin 2005年第14期50卷 1495-1502页

作者： ZHOU Botao1,5, ZHAO Ping2. JIAN Zhimin3 & HE Jinhai4 1. nansen-zhu {2. {2. center, institute of atmospheric physics, chinese academy of sciences, beijing 100029, China 2. institute of Climate and Environment, chinese academy of Meteoro- logical sciences, {12. 100081, China 3. Laboratory of Marine Geology, Tongji University, Shanghai 2.0092. China 4. Department of atmospheric sciences, Nanjing institute of Meteorol- ogy, Nanjing 2.0044, China 5. Graduate School of the chinese academy of sciences, {12. 100039, China nansen-{1. {2. {2. center Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China Graduate School of the chinese academy of sciences Beijing China institute of Climate and Environment Chinese Academy of Meteorological Sciences Beijing China Laboratory of Marine Geology Tongji University Shanghai China Department of atmospheric {1. Nanjing Institute of Meteorology Nanjing China

Using a global atmosphere-ocean coupled model with the present-day and 1. MaB.P. oceanic topogra- phy respectively, two experiments are implemented to inves- tigate the effect of different locations of Australian Plate on the atmospheric circulation in middle-high latitudes of the Southern Hemisphere. The results show that when Austra- lian Plate lay south at 1. MaB.P., both anticyclone circula- tions in the subtropical oceans and cyclone circulation around 60°-70°S are strengthened. Subtropical highs and circumpolar low pressure appear stronger, which results in much stronger Antarctic Oscillation and shorter period of Antarctic Oscillation Index (AOI) at 1. MaB.P. The rainfall and the surface air temperature also change correspondingly. The precipitation decreases around 40°S and increases around 60°-70°S, and the surface air temperature rises in high latitudes of the South Pacific and descends over the Weddell Sea and its north side. Besides, due to the changes of the temperatures and winds, Antarctic sea ice coverage also changes with its increasing in the Ross Sea and its west re- gions and decreasing in the Weddell Sea.

关键词：半球气候地球环球澳大利亚漂流物海洋地形学

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Impact of Topography and Land-Sea Distribution on East Asian Paleoenvironmental Patterns

Impact of Topography and Land-Sea Distribution on East Asian...

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中国科学院地质与地球物理研究所2.06学术年会

作者： ZHANG Zhongshi~(1,2.,wang huijun~2.GUO Zhengtang~(3,1),and {2. dabang~2.1 institute of Geology and Geophysics,chinese academy of sciences,beijing 100029 2.nansen-{12. international research center,institute of atmospheric physics, chinese academy of sciences,beijing 100029 3 State Key Laboratory of Loess and Quaternary Geology,institute of Earth Environment, chinese academy of sciences,Xi’an 710075

Much geological research has illustrated the transition of paleoenvironmental patterns during the Cenozoic from a planetary-wind-dominant type to a monsoon-dominant type, indicating the initiation of the East Asian monsoon and inland-type ***,there is a dispute about the causes and mechanisms of the transition,especially about the impact of the Himalayan/Tibetan Plateau uplift and the Paratethys Sea *** numerical sensitivity experiments under dirent land-sea distributions and Himalayan/Tibetan Plateau topography conditions are performed here to simulate the evolution of climate belts with emphasis on changes in the rain band,and these are compared with the changes in the paleoenvironmental patterns during the Cenozoic recovered by geological *** consistency between simulations and the geological evidence indicates that both the Tibetan Plateau uplift and the Paratethys Sea retreat play important roles in the formation of the monsoon-dominant environmental pattern. Furthermore,the simulations show the monsoon-dominant environmental pattern comes into being when the Himalayan/Tibetan Plateau reaches 1.00-2.00 m high and the Paratethys Sea retreats to the Turan Plate.

关键词： Paratethys Sea retreat Himalayan/Tibetan Plateau uplift paleoenvironmental pattern precipitation field Turan Plate

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Distinct Interannual Variability and Physical Mechanisms of Snowfall Frequency over the Eurasian Continent during Autumn and Winter

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Advances in atmospheric {1. 2024年第10期41卷 1969-1983,I0011-I0013页

作者： Siyu ZHOU Bo SUN* huijun {1. Yi ZHENG Jiarui CAI Huixin LI Botao ZHOU Collaborative Innovation center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disasters Ministry of Education/Joint International Research Laboratory of Climate and Environment ChangeNanjing University of Information Science and TechnologyNanjing 210044China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519080China nansen {1. {2. {2. Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China

This study investigates the dominant modes of interannual variability of snowfall frequency over the Eurasian continent during autumn and winter,and explores the underlying physical *** first EOF mode(EOF1.of snowfall frequency during autumn is mainly characterized by positive anomalies over the Central Siberian Plateau(CSP)and Europe,with opposite anomalies over Central Asia(CA).EOF1.during winter is characterized by positive anomalies in Siberia and negative anomalies in Europe and East Asia(EA).During autumn,EOF1.is associated with the anomalous sea ice in the Kara–Laptev seas(KLS)and sea surface temperature(SST)over the North *** sea ice in the KLS may cause an increase in the meridional air temperature gradient,resulting in increased synoptic-scale wave activity,thereby inducing increased snowfall frequency over Europe and the *** increases of both sea ice in the KLS and SST in the North Atlantic may stimulate downstream propagation of Rossby waves and induce an anomalous high in CA corresponding to decreased snowfall *** contrast,EOF1.is mainly affected by the anomalous atmospheric circulation during *** the positive phase of the North Atlantic Oscillation(NAO),an anomalous deep cold low(warm high)occurs over Siberia(Europe)leading to increased(decreased)snowfall frequency over Siberia(Europe).The synoptic-scale wave activity excited by the positive NAO can induce downstream Rossby wave propagation and contribute to an anomalous high and descending motion over EA,which may inhibit *** NAO in winter may be modulated by the Indian Ocean dipole and sea ice in the Barents-Kara-Laptev Seas in autumn.

关键词： snowfall frequency Eurasian continent sea ice atmospheric circulation interannual variability Indian Ocean dipole

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Assimilation of Satellite Altimetry into a Western North Pacific Operational Model

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Advances in atmospheric {1. 2001年第5期18卷 767-786页

作者： Masafumi Kamachi, Tsurane Kuragano, Noriya Yoshioka, jiang {1., and Francesco Uboldi Meteorological {2. {2., 1.1.Nagamine, Tsukubo 305-0052.Japan Japan Meteorological Agenry, 1.3-4 Otemachi, Tokyo 1.0-81.2.Japan institute of atmospheric physics Meteorological research {1. Tsukuba Japan Japan Meteorological Agency Tokyo Japan institute of {1. {2. Chinese Academy of Science Beijing China Magritte SNC Milano Italy

An ocean data assimilation system, COMPASS-K (the Comprehensive Ocean Modeling, Prediction, Analysis and Synthesis System in the Kuroshio-region), has been developed at the Meteorological research {1. (MRI). The purposes of the development are understanding ocean variability in the Kuroshio region as a local response to a global climate change with assimilated four-dimensional data sets, development of an operational system in the Japan Meteorological Agency, and for the GODAE (Global Ocean Data Assimilation Experiment) project. The model is an eddy permitting version of an MRI-OGCM. Space-time decorrelation scales of ocean variability are estimated with TOPEX / POSEIDON (T/P) altimeter data. Subsurface temperature and salinity fields are projected from the T / P altimeter data with a statistical correlation method and are assimilated into the model with a time-retrospective nudging scheme. Seasonal variation in the western North Pacific is investigated. Realistic space-time distribution of the physical quantities, the path of Kuroshio and its separation from Honshu are captured well. The Kuroshio volume transport is well reproduced in a reanalysis experiment of 1.93. Preliminary predictability experiments are done in February and March, 1.94. Predictability diagram shows the time scale of the predictability for temperature field is about 1. days in the Kuroshio south of Japan. This time scale is smaller than that in the North Atlantic.

关键词： assimilation Kuroshio predictability

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Simulation of sea surface temperature changes in the Middle Pliocene warm period and comparison with reconstructions

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Science Bulletin 2011年第9期56卷 892-901页

作者： YAN Qing1,2*, ZHANG ZhongShi3,1*, wang huijun1,4, {2.,4,5 & ZHENG WeiPeng6 1 nansen-zhu international research Centre, institute of atmospheric physics, chinese academy of sciences, beijing 100029, China 2 Graduate University of chinese academy of sciences, beijing 100049, China 3 Bjerknes Centre for Climate research, Uniresearch, Bergen N-5007, Norway 4 Climate Change research center, chinese academy of sciences, beijing 100029, China 5 Key Laboratory of Regional Climate-Environment research for Temperate East Asia, chinese academy of sciences, beijing 100029, China 6 National Key Laboratory of Numerical Modeling for {2.} {2.} and Geophysical Fluid Dynamics, institute of atmospheric physics, chinese academy of sciences, beijing 100029, China nansen-{1. {2. {2. Centre Institute of Atmospheric Physics Chinese Academy of Sciences Graduate University of chinese academy of sciences Bjerknes Centre for Climate research UniResearch Climate Change research {1. Chinese Academy

The Middle Pliocene (ca 3.1.–2.97 Ma) is a recent warm period in the Earth’s history. In many respects, the warmth of the Middle Pliocene is similar to the probable warm situation of the late 2.0}t century predicted by climate models. Understanding the Middle Pliocene climate is important in predicting the future climate with global warming. Here, we used the latest reconstructions for the Middle Pliocene—Pliocene {2. Interpretation and Synoptic Mapping (PRISM) version 3—to simulate the Middle Pliocene climate with a fully coupled model Fast Ocean Atmosphere Model. From comparison of the results of simulations with reconstructions, we considered two important scientific topics of Middle Pliocene climate modeling: extreme warming in the subpolar North Atlantic and a permanent El Ni?o in the tropical Pacific. Our simulations illustrate that the global annual mean sea surface temperature (SST) in the Middle Pliocene was about 2.3°C higher than that in the pre-industrial era. The warming was stronger at midand high latitudes than at low latitudes. The simulated SST changes agree with SST reconstructions in PRISM3 data, especially for the North Atlantic, North Pacific and west coast of South America. However, there were still discrepancies between the simulation of the SST and reconstructions for the subpolar North Atlantic and tropical Pacific. In the case of the Atlantic, the weakened meridional overturning circulation in the simulation did not support the reconstruction of the extremely warm condition in the subpolar North Atlantic. In the case of the tropical Pacific, the whole ocean warmed, especially the eastern tropical Pacific, which did not support the permanent El Ni?o suggested by the reconstruction. From evaluation of the modeling and reconstruction, we suggest that the above discrepancies were due to uncertainties in reconstructions, difficulties in paleoclimate modeling and deficiencies of climate models. The discrepancies should be reduced through cons

关键词： Middle Pliocene sea surface temperature permanent El Ni?o numerical modeling extreme warming

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A Global transport Model of Dust (GMOD) and its simulation on the dust aerosol distribution

A Global transport Model of Dust (GMOD) and its simulation o...

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中国气象学会2.08年年会大气环境监测、预报与污染物控制分会场

作者： Xu Yue1,2. huijun wang1, Zifa wang1 and Ke Fan11nansen-zhu international research center, institute of atmospheric physics, chinese academy of sciences, beijing, China. 2.raduate School of the chinese academy of sciences, beijing, China.

A new global three-dimensional transport model of mineral dust aerosols is developed and evaluated. The dust model is embedded in a general circulation model with conservative dynamical core and unique consideration of the polar transportation, which make the model stable in simulations. Comprehensive parameterizations of the emission and deposition processes from wang et al. [2.00] are modified to match the surface conditions and meteorological fields of the climate model. A 2.-year simulation from the dust model gives an estimation of dust mobilization of 1.74 ± 30 Tg yr-1.and a global dust burden of about 2. Tg for the particles smaller than 1. μm. The vertical distribution, temporal variation on different time scales and surface concentration of the simulated mineral dust aerosols are compared with both observations and simulations from other models. The evaluation results show that the new dust model has the ability to reproduce the principal features of global dust transportation. The main deficiency of the model is the underestimation of the dust activity in East Asia during spring and the overestimation of the concentration in Central Pacific, which have also been reported by other model simulations. The global mean optical thickness of dust at 0.63 μm is 0.02. ± 0.004 in the model, which is comparable to the magnitude of sulphate aerosols. Such result indicates that both anthropogenic and natural sources need to be considered when evaluating the climate feedback of aerosols.

关键词： mineral dust aerosols, transport model, emission and deposition, optical thickness

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末次间冰期全球气候瞬变模拟与平衡态模拟的对比研究

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地学前缘 2024年第1期31卷 486-499页

作者：江南萱燕青王会军中国科学院大气物理研究所竺可桢南森国际研究中心北京100029 中国科学院大学北京100049 南京信息工程大学气象灾害教育部重点实验室/气象灾害预报预警与评估协同创新中心江苏南京210044

采用水平分辨率约1.的地球系统模式CESM,本研究开展了末次间冰期1.9~1.4 ka的瞬变模拟试验(TGCS-LIG)和1.7 ka的平衡态切片模拟试验(1.7ka-LIG),量化了数值试验方案对模拟的末次间冰期全球气候的影响,以期加深理解造成模拟结果与重建... 详细信息

采用水平分辨率约1.的地球系统模式CESM,本研究开展了末次间冰期1.9~1.4 ka的瞬变模拟试验(TGCS-LIG)和1.7 ka的平衡态切片模拟试验(1.7ka-LIG),量化了数值试验方案对模拟的末次间冰期全球气候的影响,以期加深理解造成模拟结果与重建数据之间分歧的可能原因。TGCS-LIG试验和1.7ka-LIG试验均表明:末次间冰期全球年平均温度较工业革命前低,降温幅度分别为0.4℃和0.2.;在夏季,北半球升温(1.2.1.5℃),而南半球降温(0.9/0.7℃)。就年降水而言,末次间冰期北半球季风区降水增加,南半球季风区降水减少,但存在显著的区域差异。与重建数据相比,TGCS-LIG试验和1.7ka-LIG试验的模拟-数据符号一致性与均方根误差均相近,但1.7ka-LIG试验模拟效果略好。TGCS-LIG试验与重建的全球年平均(夏季)海温符号一致性为34.9%~44.7%(36.8%~42.5%),较1.7ka-LIG偏差约2.~4%(约5%~7%);均方根误差为2.9~3.2.(2.9~3.4℃),较1.7ka-LIG试验偏差小于约0.1.。对于全球年平均降水,TGCS-LIG试验与重建数据的符号一致性为63.8%,略高于1.7ka-LIG试验(63.1.)。相较于模拟和重建之间的绝对偏差而言,数值试验方案对于改进两者分歧的作用十分有限。需要注意的是,TGCS-LIG试验表明:末次间冰期全球关键气候模态的年际变率在1.9~1.4 ka间存在显著的内部变化,其中ENSO年际变率随时间逐渐增强,北半球环状模与南半球环状模的年际变率呈现千年尺度波动的特征;而1.7ka-LIG试验无法刻画气候模态的时间演变特征。总之,本文研究结果表明,采用平衡模拟试验或是瞬变模拟试验并不是造成末次间冰期模拟-数据分歧的主要原因,但开展高时空分辨率的瞬变模拟试验对研究末次间冰期气候变率具有重要的科学价值。

关键词：末次间冰期模拟-重建对比瞬变试验平衡态试验

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Influence of October Eurasian Snow on Winter Temperature over Northeast China

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Advances in atmospheric {1. 2017年第1期34卷 116-126页

作者： Huanlian LI huijun {1. {2. jiang China Meteorological Administration Training Centre Beijing 100081China nansen-{1. {2. {2. Centre Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Climate Change research {1. Chinese Academy of SciencesBeijing 100029China

This paper addresses the interannual variation of winter air temperature over Northeast China and its connection to preceding Eurasian snow cover. The results show that there is a significant negative correlation between October Eurasian snow cover and following-winter air temperature over Northeast China. The snow cover located in eastern Siberia and to the northeast of Lake Baikal plays an important role in the winter air temperature anomaly. More （less） eastern Siberia snow in October can cause an atmospheric circulation anomaly pattern in which the atmospheric pressure is higher （lower） than normal in the polar region and lower （higher） in the northern mid-high latitudes. Due to the persistence of the eastern Siberia snow from October to the following winter, the winter atmospheric anomaly is favorable （unfavorable） to the widespread movement of cold air masses from the polar region toward the northern mid-high latitudes and, hence, lower （higher） temperature over Northeast China. Simultaneously, when the October snow cover is more （less）, the SST in the northwestern Pacific is continuously lower （higher） as a whole; then, the Aleutian low and the East Asia trough are reinforced （weakened）, favoring the lower （higher） temperature over Northeast China.

关键词： winter air temperature Northeast China Eurasian snow cover physical mechanism atmospheric circulationanomaly

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NUMERICAL MODELING OF SILT SEDIMENTATION AND RELEVANT ENGINEERING PROBLEMS

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international Journal of Sediment {1. 1996年第2期 22-37页

作者： Qingcun ZENG Dengjian GUO zhuo LIU and jiang zhu2. chinese Academiy of {2.,institute of atmospheric physics,chinese academy of {2.,beijing,100080,P.R.China)(2.{12.,chinese academy of {2.,Beliing, 100080,P.R.Ch

ＮＵＭＥＲＩＣＡＬＭＯＤＥＬＩＮＧＯＦＳＩＬＴＳＥＤＩＭＥＮＴＡＴＩＯＮＡＮＤＲＥＬＥＶＡＮＴＥＮＧＩＮＥＥＲＩＮＧＰＲＯＢＬＥＭＳＱｉｎｇｃｕｎＺＥＮＧ；ＤｅｎｇｊｉａｎＧＵＯ；ＺｈｕｏＬＩＵａｎｄＪｉａｎｇＺＨＵ... 详细信息

ＮＵＭＥＲＩＣＡＬＭＯＤＥＬＩＮＧＯＦＳＩＬＴＳＥＤＩＭＥＮＴＡＴＩＯＮＡＮＤＲＥＬＥＶＡＮＴＥＮＧＩＮＥＥＲＩＮＧＰＲＯＢＬＥＭＳＱｉｎｇｃｕｎＺＥＮＧ；ＤｅｎｇｊｉａｎＧＵＯ；ＺｈｕｏＬＩＵａｎｄＪｉａｎｇＺＨＵ２（１ＭｅｌｎｂｅｒｏｆＣｈｉｎｅ...

关键词： Silt sedimentation Numerical modeling Optimum engineering Inverse Problem Cybernetics

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中国江南地区夏季降水的统计降尺度预报(英文)

中国江南地区夏季降水的统计降尺度预报(英文)

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第2.届中国气象学会年会

作者： LIU Ying 1,2.FAN Ke1,and wang Hui-Jun1 1 nansen-{2. {2. research Centre,institute of atmospheric physics,chinese academy of sciences,beijing {12.,China 2.Graduate University of the chinese academy of sciences,beijing 100049,China

本文基于多元线性回归,利用DEMETER资料和观测资料对中国江南地区的夏季降水进行统计降尺度研究。结果发现,统计模式在江南地区DEMETER7个模式回报的夏季降水与观测结果的空间距平相关系数提高显著,尤其是在中部和东北部地区,距平相关... 详细信息

本文基于多元线性回归,利用DEMETER资料和观测资料对中国江南地区的夏季降水进行统计降尺度研究。结果发现,统计模式在江南地区DEMETER7个模式回报的夏季降水与观测结果的空间距平相关系数提高显著,尤其是在中部和东北部地区,距平相关系数都大于0.42.超过95%信度）甚至超过0.53（超过99%信度）。同时,均方根误差（RMSE）在江南东北部地区也有显著降低,降尺度前后的均方根误差差值场大于1.m/d。降尺度之后的区域平均夏季降水距平时间序列能够抓住观测场的主要特征,模式原始结果与观测的时间序列的相关系数的变化范围为-0.2.到0.2.,在实施降尺度之后,相关系数的变化范围提高到0.52.0.69。

关键词： statistical downscaling DEMETER Southeastern China summer precipitation anomaly

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