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Relationship between the Modes of Winter Tropical Pacific SST Anomalies and the Intraseasonal Variations of the Following Summer Rainfall Anomalies in China

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Atmospheric and Oceanic Science Letters 2009年第5期2卷 295-300页

作者： huang Ping huang rong-hui Center for Monsoon System Research (CMSR) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100190 China

In present study,EOF analysis and extended singular value decomposition (ESVD) analysis are performed to explore the relationship between the winter tropical sea surface temperature anomalies (SSTAs) in the Pacific and the following summer rainfall anomalies in *** two leading modes of winter tropical SSTAs in the Pacific are the SSTAs pattern characterized by "positive anomalies in the East and negative anomalies in the West" like the typical eastern Pacific El Nio and negative anomalies in the West and the central Pacific warming pattern characterized by "positive anomalies in the central region but negative anomalies in the East and West".The intraseasonal variations of the rainfall anomalies during the following summer in China that are associated with the eastern Pacific warming mode are characterized by positive anomalies south of the Yangtze River and negative anomalies in the Yangtze-Huai River Valley in June,and negative anomalies in South China and positive anomalies in the Yangtze River Valley and North China in July and *** contrast,after the central Pacific warming mode,the corresponding intraseasonal variations of China’s summer rainfall are characterized by a nearly consistent pattern during the three summer months,which is positive in the South China coast and North China and negative in the Yangtze River Valley except for the positive anomalies in the Yangtze-Huai River Valley in *** results may provide a reference for the seasonal prediction of the summer drought and flood distributions in China.

关键词： Pacific SSTAs summer rainfall in China intraseasonal variations

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Delayed Seasonal Transition of Tropical Wave Activity in the CMIP3 Global Climate Models

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Atmospheric and Oceanic Science Letters 2013年第1期6卷 33-38页

作者： huang Ping Chia CHOU Chia-hui CHUNG huang rong-hui Center for Monsoon System Research Institute of Atmospheric PhysicsChinese Academy of Sciences Research Center for Environmental Changes Academia SinicaTaipei 115China Department of Atmospheric Sciences NTUTaipei 10617China

This study evaluates the seasonal cycle of the activity of convectively coupled equatorial waves(CCEWs),including mixed Rossby-gravity(MRG) and tropical depression-type(TD-type) waves,based on the twentieth century experiments of 18 global climate models(GCMs) from the Coupled Model Intercomparison Project phase 3(CMIP3).The ensemble result of the 18 GCMs shows that the observed seasonal cycle of MRG and TD-type wave activity cannot be well *** seasonal transition of wave activity from the southern hemisphere to the northern hemisphere is delayed from April in the observations to May in the simulations,indicating that the simulated active season of tropical waves in the northern hemisphere is delayed and *** delayed seasonal transition of tropical wave activity is associated with a delayed seasonal transition of simulated mean *** mean precipitation in April and May shows a double-ITCZ problem,and the horizontal resolution is important to the delayed seasonal transition of wave *** of the coincident seasonal cycle of MRG and TD-type wave activity and tropical cyclone(TC) geneses,the delayed seasonal transition of wave activity may imply a similar problem of TC genesis in the GCMs,namely,a delayed and shortened TC season in the northern hemisphere.

关键词： tropical wave CMIP3 GCMs

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Role of Equatorial Wave Transitions in Tropical Cyclogenesis over the Western North Pacific

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Atmospheric and Oceanic Science Letters 2008年第1期1卷 64-68页

作者： CHEN Guang-Hua huang rong-hui Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100080 China

This study associates tropical cyclone (TC) activity over the western North Pacific (WNP) with the equatorial wave transition from an interannual viewpoint, revealing that the tropical cyclogenesis mean location may be modulated by a longitudinal shift in the transition of Mixed Rossby-gravity (MRG) waves to off-equatorial tropical depression (TD) disturbances from year to year. To a large extent, the wave transition is attributable to the monsoon trough in response to the thermal state of the warm pool (WP) over the WNP. During the cold state years in the WP, the basic flow confluence region associated with the monsoon trough penetrates eastward, leading to an eastward shift in the location of the wave transition. Such an environment, in which wave accumulation and energy conversion occur, is favorable for tropical cyclogenesis; as a result, the averaged cyclogenesis location moves eastward. The condition is reserved during the warm years in the WP, resulting in the prominent westward-retreating mean TC formation.

关键词： equatorial waves tropical cyclogenesis west-em North Pacific

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Influence of Tropical Western Pacific Warm Pool Thermal State on the Interdecadal Change of the Onset of the South China Sea Summer Monsoon in the Late-1990s

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Atmospheric and Oceanic Science Letters 2015年第2期8卷 95-99页

作者： huangFU Jing-Liang huang rong-hui CHEN Wen Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

An interdecadal shift in the onset date of the South China Sea summer monsoon(SCSSM) is identified during the late 1990 s by using the European Centre for Medium-Range Weather Forecasts Interim Reanalysis dataset. The mean onset date was brought forward by two pentads during 1999–2013 compared to that during 1979–1998. The large-scale atmospheric and oceanic change associated with this shift exhibits a significant interdecadal variation signal around 1998/1999, indicating that the shift during the late 1990 s is robust. Different from the well-known mid-1990 s shift, this shift carried more important systematical significance. Diagnostic analysis suggests that the earlier outbreak of the SCSSM was due to the interdecadal warming of the warm pool, which brought stronger convection anomalies and led to a weak western Pacific subtropical high(WPSH) during boreal spring(March–May). The earlier retreat of the WPSH was a direct cause of this shift.

关键词： South China Sea summer monsoon interde-cadal change convection western Pacific subtropical high

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Variability of Surface Sensible Heat Flux over Northwest China

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Atmospheric and Oceanic Science Letters 2010年第2期3卷 75-80页

作者： ZHOU Lian-Tong WU Ren-Guang huang rong-hui Center for Monsoon System Research Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100190 China Center for Ocean-Land-Atmosphere Studies Calverton Maryland MD 20705 USA

The present study documents the variability of surface sensible heat flux over Northwest China using station observations for the period 1961 *** is found that the afternoon and nighttime sensible heat flux variations are remarkably *** variability of the instant flux in the afternoon is much larger than in the *** afternoon and nighttime flux anomalies tend to be *** diurnal and seasonal dependence of sensible heat flux variations is closely related to the diurnal cycle of mean land-air temperature *** relationship of sensible heat flux with land-air temperature difference based on the instant value differs from that based on the daily *** present study indicates the importance for the models to properly simulate mean land-air temperature difference and its diurnal and seasonal variations in order to capture surface sensible heat flux variability over Northwest China and predicts its plausible impacts on climate.

关键词： sensible heat flux land-air temperature difference wind speed

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WeldNet:A voxel-based deep learning network for point cloud annular weld seam detection

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Science China(Technological Sciences) 2024年第4期67卷 1215-1225页

作者： WANG hui rong YouMin XU JiaJun XIANG SongMing PENG YiFan huang Yu State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074China School of Mechanical Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

Weld seam detection is an important part of automated *** present,few studies have been conducted on annular weld seams,and a lot of defects exist in the point cloud model of the tube sheet obtained by RGB-D cameras and photography *** at the above problems,this paper proposed an annular weld seam detection network named WeldNet where a voxel feature encoding layer was adaptively improved for annular weld seams,the sparse convolutional network and region proposal network(RPN)were used to detect annular weld seam position,and an annular weld seam detection loss function was ***,an annular weld seam dataset was established to train the *** with the random sampling consistency(RANSAC)method,WeldNet has a higher detection accuracy,as well as a higher detection success rate which has increased by 23%.Compared with U-Net,WeldNet has been proven to achieve a better detection result,and the intersection over the union of the weld seam detection is improved by 17.8%.

关键词： deep learning point cloud weld seam detection welding annular weld seam

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RESEARCH ON THE INTERANNUAL AND INTERDECADAL VARIABILITIES OF THE MONSOON TROUGH AND THEIR IMPACTS ON TROPICAL CYCLONE GENESIS OVER THE WESTERN NORTH PACIFIC OCEAN

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Journal of Tropical Meteorology 2018年第4期24卷 395-420页

作者： huang rong-hui huangFU Jing-liang WU Liang FENG Tao CHEN Guang-hua Center for Monsoon System Research (CMSR) Institute of Atmospheric Physics (IAP) Chinese Academy of Sciences (CAS) State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG) Institute of Atmospheric Physics Chinese Academy of Sciences (IAP/CAS) College of Earth Sciences University of Chinese Academy of Sciences CMA-NJU Joint Laboratory for Climate Prediction Studies Institute for Climate and Global Change ResearchSchool of Atmospheric Sciences Nanjing University

In this paper, we mainly summarize and review the progresses in recent climatological studies(by CMSR,IAP/CAS and some associated domestic and international institutions) on the interannual and interdecadal variabilities of monsoon troughs and their impacts on tropical cyclones and typhoons(TCs) geneses over the western North Pacific Ocean. The climatological characteristics of monsoon troughs and four types of circulation patterns favorable to TCs genesis over the western North Pacific Ocean in summer and autumn are given in this paper. It is also shown in this paper that the monsoon trough over the western North Pacific Ocean has obvious interannual and interdecadal variabilities. Especially, it is revealed in this paper that the interannual and interdecadal variabilities of the monsoon trough over the western North Pacific Ocean influence the TCs genesis not only through the impact on distributions of the vorticity in the lower troposphere and the divergence in the upper troposphere, the water vapor in the mid-and lower troposphere and the vertical shear of wind fields between the upper and lower troposphere over the western North Pacific Ocean, but also through the dynamical effects of the transition between convectively coupled tropical waves and providing disturbance energy. Besides, some climatological problems associated with TCs activity over the western North Pacific Ocean that need to be studied further are also pointed out in this paper.

关键词： monsoon trough interannual variability interdecadal variability tropical cyclone typhoon

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Scientific and technological innovations of wastewater treatment in China

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Frontiers of Environmental Science & Engineering 2024年第6期18卷 43-48页

作者： hui huang Rui Ma Hongqiang Ren State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China

The“dual-carbon”strategy promotes the development of the wastewater treatment sector and is an important tool for leading science and technology *** on the global climate change and the new policies introduced by China,this paper described the new needs for the development of wastewater treatment science and *** offered a retrospective analysis of the historical trajectory of scientific and technological advancements in this *** bibliometrics,it delineated the research hotspots within wastewater treatment,notably highlighting materials genomics,artificial intelligence,and synthetic ***,it posited that,in the future,the field of wastewater treatment should follow the paths of technological innovations with multi-dimensional needs,such as carbon reduction,pollution reduction,health,standardisation,and *** purpose of this paper was to provide references and suggestions for scientific and technological innovations in the field of wastewater treatment,and to contribute to the common endeavor of moving toward a Pollution-Free Planet.

关键词： Wastewater treatment Dual-carbon strategy Technological innovation Carbon reduction

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A DIAGNOSTIC STUDY OF FORMATION AND MAINTENANCE OF BLOCKING SITUATION ON THE NORTHERN HEMISPHERE USING E-P FLUX

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Science China Chemistry 1989年第2期32卷 227-241页

作者：邹捍黄荣辉 Institute of Atmospheric Physics Academia Sinica Beijing

In this paper, the variations of the mean flow, the E-P flux and its divergence of planetary waves in the process of the formation, maintenance and collapse of the blocking situation in the second half of February, 1979 are analysed with the transformed Eulerian mean-motion *** results show that because the basic flow changes from the easterly into the westerly in the lower troposphere at high latitudes, the planetary wave for wavenumber 2 strongly propagates upwards, and because of the interaction between the upward propagating planetary wave and the basic flow, the westerty is weakened and approaches to the resonant flow of wavenumber 2 in the middle and upper troposphere (then, in the lower and middle Stratosphere). This may cause the anomalous amplification of planetary wave for wavenumber 2, and moreover make the mean flow change from the westerly into the easterly in the lower and middle stratosphere, following the upper troposphere. Therefore, the blocking situation can be formed and maintained on the Northern Hemisphere. Thus, the upward propagations of quasi-stationary planetary waves and the mutual interaction with the basic flow are also one of the reasons of the formation and maintenance of the blocking situation.

关键词： blocking situation E-P flux planetary waves precondition.

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亚洲夏季风水汽输送的年际年代际变化与中国旱涝的关系

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地球物理学报 2008年第2期51卷 352-359页

作者：陈际龙黄荣辉中国科学院大气物理研究所季风系统研究中心北京100080

利用1958～2002年的NCEP-R1和ERA-40逐日再分析资料以及中国160站点月平均降水资料探讨了亚洲夏季风水汽输送的年际年代际变化及其与中国降水异常的关系．分析结果表明，亚洲夏季风水汽输送和中国夏季降水的异常主模态呈现显著的准两年... 详细信息

利用1958～2002年的NCEP-R1和ERA-40逐日再分析资料以及中国160站点月平均降水资料探讨了亚洲夏季风水汽输送的年际年代际变化及其与中国降水异常的关系．分析结果表明，亚洲夏季风水汽输送和中国夏季降水的异常主模态呈现显著的准两年变化周期．当南亚夏季风纬向水汽输送偏强（弱）时，东亚一西北太平洋地区水汽输送的偶极型异常有利于长江中下游地区和江淮流域的水汽辐合负（正）异常与华南和华北地区的水汽辐合正（负）异常，从而引起中国东部的经向三极子雨型，即长江中下游地区和江淮流域的偏旱（涝）与华南和华北地区的偏涝（旱）．1970s年代末之后，亚洲夏季风水汽输送的年代际减弱与西北太平洋地区水汽输送的偶极型异常相配合，导致长江中下游地区的持续偏涝与华南和华北地区的持续偏旱．从中国夏季降水异常与水汽通量辐合异常的同相对应关系来看，ERA．40资料对亚洲夏季风水汽输送年际年代际变化的描述能力强于NCEP-R1资料．

关键词：亚洲夏季风年际变化年代际改变偶极型水汽输送异常三极子雨型

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