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Assessment of Wet Season Precipitation in the Central United States by the Regional Climate Simulation of the WRFG Member in NARCCAP and Its Relationship with Large-Scale Circulation Biases

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Advances in Atmospheric Sciences 2024年第4期41卷 619-638页

作者： Yating ZHAO Ming XUE Jing JIANG Xiao-Ming HU anning huang School of Atmospheric Sciences Nanjing UniversityNanjing 210023China Center for Analysis and Prediction of Storms and School of Meteorology The University of OklahomaNorman 73072U.S.A

Assessment of past-climate simulations of regional climate models(RCMs)is important for understanding the reliability of RCMs when used to project future regional ***,we assess the performance and discuss possible causes of biases in a WRF-based RCM with a grid spacing of 50 km,named WRFG,from the North American Regional Climate Change Assessment Program(NARCCAP)in simulating wet season precipitation over the Central United States for a period when observational data are *** RCM reproduces key features of the precipitation distribution characteristics during late spring to early summer,although it tends to underestimate the magnitude of *** dry bias is partially due to the model’s lack of skill in simulating nocturnal precipitation related to the lack of eastward propagating convective systems in the *** in reproducing large-scale circulation and environmental conditions is another contributing *** too weak simulated pressure gradient between the Rocky Mountains and the Gulf of Mexico results in weaker southerly winds in between,leading to a reduction of warm moist air transport from the Gulf to the Central Great *** simulated low-level horizontal convergence fields are less favorable for upward motion than in the NARR and hence,for the development of moist convection as ***,a careful examination of an RCM’s deficiencies and the identification of the source of errors are important when using the RCM to project precipitation changes in future climate scenarios.

关键词： NARCCAP Central United States precipitation low-level jet large-scale environment diurnal variation

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The Climate Response to Global Forest Area Changes under Different Warming Scenarios in China

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Advances in Atmospheric Sciences 2023年第6期40卷 1073-1088页

作者： Ying huang anning huang Jie TAN School of Atmospheric Sciences Nanjing UniversityNanjing 210023China Frontiers Science Center for Critical Earth Material Cycling Nanjing UniversityNanjing 210023China Glarun Technology Co. Ltd.Nanjing 211106China

Human activities have notably affected the Earth’s climate through greenhouse gases(GHG), aerosol, and land use/land cover change(LULCC). To investigate the impact of forest changes on regional climate under different shared socioeconomic pathways(SSPs), changes in surface air temperature and precipitation over China under low and medium/high radiative forcing scenarios from 2021 to 2099 are analyzed using multimodel climate simulations from the Coupled Model Intercomparison Project Phase 6(CMIP6). Results show that the climate responses to forest changes are more significant under the low radiative forcing scenario. Deforestation would increase the mean, interannual variability, and the trend of surface air temperature under the low radiative forcing scenario, but it would decrease those indices under the medium/high radiative forcing scenario. The changes in temperature show significant spatial heterogeneity. For precipitation, under the low radiative forcing scenario, deforestation would lead to a significant increase in northern China and a significant decrease in southern China, and the effects are persistent in the near term(2021–40), middle term(2041–70), and long term(2071–99). In contrast, under the medium/high radiative forcing scenario, precipitation increases in the near term and long term over most parts of China, but it decreases in the middle term, especially in southern, northern,and northeast China. The magnitude of precipitation response to deforestation remains comparatively small.

关键词： land use/land cover change deforestation radiative forcing scenario regional climate

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Seasonal and Intraseasonal Variations of East Asian Summer Monsoon Precipitation Simulated by a Regional Air-Sea Coupled Model

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Advances in Atmospheric Sciences 2013年第2期30卷 315-329页

作者： FANG Yongjie ZHANG Yaocun huang anning LI Bo Beijing Climate Center China Meteorological Administration Beijing 100081 School of Atmospheric Sciences Nanjing University Nanjing 210093 Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites China Meteorological Administration Beijing 100081

The performance of a regional air-sea coupled model, comprising the Regional Integrated Environment Model System （RIEMS） and the Princeton Ocean Model （POM）, in simulating the seasonal and intraseasonal variations of East Asian summer monsoon （EASM） rainfall was investigated. Through comparisons of the model results among the coupled model, the uncoupled RIEMS, and observations, the impact of air-sea coupling on simulating the EASM was also evaluated. Results showed that the regional air sea coupled climate model performed better in simulating the spatial pattern of the precipitation climatology and produced more realistic variations of the EASM rainfall in terms of its amplitude and principal EOF modes. The coupled model also showed greater skill than the uncoupled RIEMS in reproducing the principal features of climatological intraseasonal oscillation （CISO） of EASM rainfall, including its dominant period, intensity, and northward propagation. Further analysis indicated that the improvements in the simulation of the EASM rainfall climatology and its seasonal variation in the coupled model were due to better simulation of the western North Pacific Subtropical High, while the improvements of CISO simulation were owing to the realistic phase relationship between the intraseasonal convection and the underlying SST resulting from the air-sea coupling.

关键词： regional air sea coupled model East Asian summer monsoon rainfall climatological intrasea-sonal oscillation

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Effects of irrigation on precipitation in the arid regions of Xinjiang,China

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Journal of Arid Land 2012年第2期4卷 132-139页

作者： Yong ZHAO YongJie FANG CaiXia CUI anning huang Institute of Desert Meteorology China Meteorology Administration Urumqi 830002 China Beijing Climate Center China Meteorological Administration Beijing 100081 China Xinjiang Meteorological Observatory Urumqi 830002 China School of Atmospheric Sciences Nanjing University Nanjing 210093 China

Soil moisture is an important parameter for the interaction between soil and atmosphere. It is the sec- ond important factor that influences climate change, next to sea surface temperature （SST）. Most previous studies focused on the monsoon regions in East China, and only a few laid emphases on arid environments. In Xinjiang, which is located in Northwest China, the climate is typically arid and semi-arid. During the past 20 years, the pre- cipitation in Xinjiang has shown a significant increasing trend, and it is closely related to oasis irrigation. This paper aims at discussing whether abnormal soil moisture in spring can be the signal to forecast summer precipitation. The effects of abnormal soil moisture due to farm irrigation in spring in arid environments on regional climate are inves- tigated by using a regional climate model （RegCM3）. The results indicate that positive soil moisture anomaly in irrigated cropland surface in May led to an increase in precipitation in spring as well as across the whole summer. The impact could last for about four months. The effects of soil moisture on the surface air temperature showed a time-lagging trend. The summer air temperature declined by a maximum amplitude of 0.8℃. The increased soil moisture could enhance evaporation and ascending motion in the low troposphere, which brought in more precipi- tation. The soil moisture affected regional weather and climate mainly by altering the surface sensible and latent heat fluxes.

关键词： irrigation abnormal soil moisture weather and climate effects precipitation arid region Xinjiang

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Relationship between thermal anomalies in Tibetan Plateau and summer dust storm frequency over Tarim Basin,China

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Journal of Arid Land 2013年第1期5卷 25-31页

作者： Yong ZHAO HongJun LI anning huang Qing HE Wen HUO MinZhong WANG Institute of Desert Meteorology China Meteorological Administration Urumqi 830002 China School of Atmospheric Sciences Nanjing University Nanjing 210093 China

The dust storm is the most important and frequent meteorological disaster over Tarim Basin, which causes huge damages on local social economics. How to predict the springtime and summertime dust storm oc- currence has become a hot issue for meteorologists. This paper employed the data of dust storm frequency and 10-m wind velocity at 35 stations over Tarim Basin and the reanalysis data from the National Center for Environ- mental Prediction and the National Center for Atmospheric Research （NCEP/NCAR） during 1961-2007 to study the relationship between dust storm frequency （DSF） in summer over Tarim Basin and the thermal anomalies in Tibetan Plateau in May by using the statistical methods, such as Empirical Orthogonal Function （EOF）, correlation and binomial moving average. The results show when negative anomalies in Tibetan Plateau and positive anomalies in its southern region are present along 30~N （the second mode of surface temperature anomalies by EOF decomposition） in May, the time coefficient （PC2） plays an important role in summer DSF variation and has a close relation with the summer DSF at both inter-annual and decadal time scales. When negative anomalies in Tibetan Plateau and positive anomalies are present in its southern region （PC2 in positive phase）, there is an anomalous anticyclone in North China, which weakens the northwest wind and is not beneficial for cold air moving from high latitude to the Tarim Basin, and the circulation pattern is hard to result in dust storm weather. Furthermore, the sea level pressure （SLP） increased over Tarim Basin and the direction of SLP gradient reversed, which resulted in the 10-m wind velocity slowing down, so the DSF decreased. From above all, it can be conclude that the thermal anomalies in Tibetan Plateau in May has important effects on the summertime dust storm frequency over Tarim Basin and the PC2 can be used as a prediction factor for the summertime dust storm occurrence.

关键词： dust storm frequency thermal anomalies Tarim Basin Tibetan Plateau

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A Case Report of Tracheal Extramedullary Plasmacytoma

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Chinese Journal of Clinical Oncology 2008年第4期5卷 311-312页

作者： Kun Wang Yunchao huang anning Chen Department of Cardiothoracic Surgery ThirdHospital of Kunming Medical College Kunruing 650118 Yunnan Province China.

Extramedullary plasmacytoma （EMP） is an uncommon tumor that often develops outside the bone and arises from clonal proliferation of atypical plasma cells before EMP is diagnosed. Multiple myeloma （MM） must be excluded by performing laboratory tests such as serum protein electrophoresis, bone marrow biopsy and skeletal imaging examinations. A bone marrow biopsy should show no evidence of multiple myeloma, and less than 3% of plasma cells. Monoclonal bands of serum protein and Bence-Jones protein in the urine can sometimes be detected. EMP can involve any extraosseous organs, but it predominantly affects the head and neck areas. Any extra-osseous organ may also be involved. Tracheal involvement is a rare finding. Only a few cases of primary tracheal extramedullary plasmcytoma have been reportedE2-41, Here we present a rare case of truly localized tracheal extramedullary plasmacytoma without evidence of myeloma elsewhere.

关键词： tracheal neoplasms myeloma extrameduUaryplasmacytoma.

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Development of Land Surface Model BCC＿AVIM2.0 and Its Preliminary Performance in LS3MIP/CMIP6

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Journal of Meteorological Research 2019年第5期33卷 851-869页

作者： Weiping LI Yanwu ZHANG Xueli SHI Wenyan ZHOU anning huang Mingquan MU Bo QIU Jinjun JI Laboratory for Climate Studies National Climate CenterChina Meteorological Administration(CMA)Beijing 100081China CMA–NJU Joint Laboratory for Climate Prediction Studies Nanjing University(NJU)Nanjing 210023China Department of Atmospheric Sciences Nanjing UniversityNanjing 210023China Department of Earth System Science University of CaliforniaIrvineIrvineCA 92697-3100USA Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology International Institute for Earth System ScienceNanjing UniversityNanjing 210023China Institute of Atmospheric Physics Chinese Academy of SciencesBeijing 100029China

The improvements and validation of several parameterization schemes in the second version of the Beijing Climate Center Atmosphere–Vegetation Interaction Model(BCC_AVIM2.0) are introduced in this study. The main updates include a replacement of the water-only lake module by the common land model lake module(Co LM-lake) with a more realistic snow–ice–water–soil framework, a parameterization scheme for rice paddies added in the vegetation module, renewed parameterizations of snow cover fraction and snow surface albedo to accommodate the varied snow aging effect during different stages of a snow season, a revised parameterization to calculate the threshold temperature to initiate freeze(thaw) of soil water(ice) rather than being fixed at 0°C in BCC_AVIM1.0, a prognostic phenology scheme for vegetation growth instead of empirically prescribed dates for leaf onset/fall, and a renewed scheme to depict solar radiation transfer through the vegetation canopy. The above updates have been implemented in BCC_AVIM2.0 to serve as the land component of the BCC Climate System Model(BCC_CSM). Preliminary results of BCC_AVIM in the ongoing Land Surface, Snow, and Soil Moisture Model Intercomparison Project(LS3 MIP) of the Coupled Model Intercomparison Project Phase 6(CMIP6) show that the overall performance of BCC_AVIM2.0 is better than that of BCC_AVIM1.0 in the simulation of surface energy budgets at the seasonal timescale. Comparing the simulations of annual global land average before and after the updates in BCC_AVIM2.0 reveals that the bias of net surface radiation is reduced from-12.0 to-11.7 W m-2 and the root mean square error(RMSE) is reduced from 20.6 to 19.0 W m-2;the bias and RMSE of latent heat flux are reduced from 2.3 to-0.1 W m-2 and from 15.4 to14.3 W m-2, respectively;the bias of sensible heat flux is increased from 2.5 to 5.1 W m-2 but the RMSE is reduced from 18.4 to 17.0 W m-2.

关键词： BCC_AVIM2.0 LS3MIP CMIP6 surface radiation sensible heat flux latent heat flux

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Mobile emergency （surgical） hospital： Development and application in medical relief of ＂4.20＂ Lushan earthquake in Sichuan Province, China

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Chinese Journal of Traumatology 2015年第1期18卷 5-9页

作者： Bin Cheng Ruofei Shi Dingyuan Du Ping Hu Jun Feng Guangbin huang anning Cai Wei Yin Ronggang Yang Chongqing Emergency Medical Center Chongqing 400042 China

In the 21st century, natural disasters and emergencies occur frequently worldwide, which leads to the loss of hundreds of thousands of lives as well as the direct and indirect economic losses. China has a vast territory frequently struck by natural disasters. However, the reality is not optimistic. Poor organization and management during the rescue actions, the lack of large-scale, systematic medical rescue equipment were all great barriers to the outcomes. Mobile hospitals are expected to provide better health care. We were inspired by the concept of mobile hospital. Chongqing Emergency Medical Center, has set up trauma care system since 1988, in which pre- hospital care, intensive care, and in-hospital treatment is fully integrated. As a major advantage, such a system provided assurance of＂golden hour＂ rescue treatment. Providing mobile intensive care and pre- hospital surgical service for severe trauma patients could reduce mortality significantly. Based on the civilian experiences in Chongqing Emergency Medical Center, the mobile emergency （surgical） hospital was developed. 2015 Production and hosting by Elsevier B.V. on behalf of Daping Hospital and the Research Institute of Surgery of the Third Military Medical University.

关键词： Natural disaster Medical relief Mobile hospital

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南亚高压伊朗高压型与新疆夏季降水的联系

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高原气象 2018年第3期37卷 651-661页

作者：赵勇王前黄安宁成都信息工程大学大气科学学院四川成都610225 南京大学大气科学学院江苏南京210093

基于1979-2013年新疆88个站点逐日降水资料和ERA-Interim再分析资料,揭示了南亚高压伊朗高压型(简称伊朗高压型)与新疆夏季(7-8月)降水的联系。结果表明,伊朗高压型是南亚高压近35年来夏季出现最多的模态,对新疆北部和东部夏季降水具有... 详细信息

基于1979-2013年新疆88个站点逐日降水资料和ERA-Interim再分析资料,揭示了南亚高压伊朗高压型(简称伊朗高压型)与新疆夏季(7-8月)降水的联系。结果表明,伊朗高压型是南亚高压近35年来夏季出现最多的模态,对新疆北部和东部夏季降水具有重要影响。当伊朗高压型中心偏西时,新疆大部降水偏多,反之偏少;当伊朗高压型中心南北移动时,对降水的影响类似,说明高压中心经向移动对降水的影响要大于纬向。伊朗高压型的"南北振荡",具体指伊朗高压中心偏西,脊线南北变化与新疆夏季降水的联系。当脊线偏北时,新疆上空受气旋环流控制,低纬热带海洋水汽沿青藏高原东侧绕流进入新疆上空,对应新疆大部地区夏季降水偏多,偏南降水偏少;当伊朗高压型中心偏东时,脊线变化对降水影响有限。伊朗高压型中心经向移动主要受青藏高原和伊朗高原加热影响,而纬向移动与帕米尔高原和阿拉伯半岛加热密切联系。

关键词：新疆南亚高压伊朗高压型夏季降水

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Diurnal variations of summer precipitation over the regions east to Tibetan Plateau

Diurnal variations of summer precipitation over the regions ...

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第35届中国气象学会年会

作者： Yang Wu anning huang Danqing huang Fei Chen Ben Yang Yang Zhou Dexian Fang Lujun Zhang Lijuan Wen CMA-NJU Joint Laboratory for Climate Prediction Studies School of Atmospheric Sciences Nanjing University Nanjing Institute of Environmental Sciences Ministry of Environmental Protection Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters/Key Laboratory of Meteorological Disaster Ministry of Education Nanjing University of Information Science & Technology (NUIST) Chongqing Institute of Meteorology and Science Key Laboratory of Land Surface Process and Climate Change in Cold and Arid Regions Chinese Academy of Sciences

Based on the hourly gauge-satellite merged precipitation product with the horizontal resolution of 0.1° latitude/longitude during 2008–2014, diurnal variations of the summer precipitation amount(PA), frequency(PF), and intensity(PI) with different duration time over the regions east to Tibetan Plateau have been systematically revealed in this study. Results indicate that the eight typical precipitation diurnal patterns identified by the cluster analysis display pronounced regional features among the plateaus, basins, plains, hilly and coastal areas. The precipitation diurnal cycles are significantly affected by the sub-grid terrain fluctuations. The PA, PF and PI of the total rainfall show much more pronounced double diurnal peaks with the subgrid topography standard deviation(SD) decreased. Meanwhile, the diurnal peaks of PA and PF(PI) strengthen(weaken) with the sub-grid topography SD enhanced. Over the elevated mountain ranges, southeastern hilly and coastal regions, the PA and PF diurnal patterns of the total rainfall generally show predominant late-afternoon peaks, which are closely associated with the short-duration(≤3 h) rainfall. Along the Tibetan Plateau to its downstream, the diurnal peaks of PA, PF and PI for the total rainfall all exhibit obvious eastward phase time delay mainly due to the diurnal evolutions of long-duration(> 6 h) rainfall. However, the 4–6 h rainfall leads to the eastward phase time delay of the total rainfall along the Taihang Mountains to its downstream. Further mechanism analysis suggests that the midnight to morning diurnal evolution of the long-duration rainfall is closely associated with the diurnal variations of the upward branches of thermally driven mountain-plain solenoids and the water vapor transport associated with the accelerated nocturnal southwesterly winds. The late-afternoon peak of the short-duration PA over the southeastern hilly and coastal regions is ascribed to the strong local thermal convections due to the sola

关键词： Diurnal variations of summer precipitation over the regions east to Tibetan Plateau

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