|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Geographic distribution and life cycle of mesoscale convective system in China and its vicinity | 马禹 王旭 陶祖钰 | 1997 | Progress in Natural Science:Materials International1997，7，5： | 21 |
| 2 | Field-observation for an anticyclonic mesoscale eddy consisted of twelve gliders and sixty-two expendable probes in the northern South China Sea during summer 2017显示文摘An intensive field observation experiment using 12 Chinese gliders equipped with conductivity-temperature-depth (CTD) sensors and 62 expendable CTD probes (XCTDs) was performed to investigate the 3-D structure and time evolution of an anticyclonic eddy in the northern South China Sea (NSCS). The observed results showed that the anticyclonic eddy had a horizontal radius of about 80 km at surface and a vertical depth of impact of more than 1000 m. The largest temperature and salinity anomalies compared with the averaged values of the temperature and salinity profiles were 3.5°C and 0.4 psu at 120 m depth, respectively. Combined analysis of altimeter sea level and water mass properties indicated that the anticyclonic eddy was shed from the Kuroshio loop current. The vertical axis of the anticyclonic eddy tilted from surface to the observed maximum depth (1000 m) along its translation direction against the 2000 m isobath. The center of the anticyclonic eddy remained in the region east of Dongsha Island for more than half a month. During this time, the long axis direction of the eddy changed from across the slope to along the slope. Then, the eddy moved southward along the 2000 m isobaths. Both the geostrophic current and temperature distribution revealed that the eddy intensity weakened during the observation period gradually. These observations indicated strong interaction between the anticyclonic eddy and the slope topography of Dongsha Island. | Yeqiang SHU Ju CHEN Shuo LI Qiang WANG Jiancheng YU Dongxiao WANG | 2019 | Science China Earth Sciences2019，62，2： | 19 |
| 3 | The Influences of Boundary Layer Parameterization Schemes on Mesoscale Heavy Rain System显示文摘The mesoscale numerical weather prediction model (MM4) in which the computations of the turbulentexchange coeffcient in the boundary layer and surface fluxes are improved, is used to study the influences ofboundary layer parameterization schemes on the predictive results of the mesoscale model. Seven differentexperiment schemes (including the original MM4 model) designed in this paper are tested by theobservational data of several heavy rain cases so as to find an improved boundary layer parameterizationscheme in the mesoscale meteorological model. The results show that all the seven different boundary layerparameterization schemes have some innuences on the forecasts of precipitation intensity, distribution ofrain area. vertical velocity. vorticity and divergence fields, and the improved schemes in this paper can improve the precipitation forecast. | 许丽人 赵鸣 | 2000 | Advances in Atmospheric Sciences2000，17，3： | 17 |
| 4 | OBSERVATION AND MODEL ANALYSES OF POSITIVE CLOUD-TO-GROUND LIGHTNING IN MESOSCALE CONVECTIVE SYSTEMS显示文摘The analyses of spatial and temporal characteristics of positive cloud-to-ground(CG)lightning for four mesoscaleconvective systems and two severe local convective systems in 1989 and 1990 show that positive CG flash rate usuallyhas two peak values.The major peak occurs during the developing stage of the storm and most of the positive CGflashes originate at the lower part of the storm.The minor occurs during the dissipative stage of the storm and most ofthe positive CG flashes originate at the upper part of the storm,especially in the region of the wind divergence in thestorm anvil.The positive CG flash rate is almost an order of magnitude larger in the developing stage than in thedissipative stage.The appearing time of the peak of negative CG flash rate is in accordance with that of the valley of pos-itive CG flash rate.The higher the intensity of the radar echo,the higher the positive CG flash rate.Most of the positive CG flashes oc-cur when the weak echo area is larger,and mostly originate in the region where the radar echo intensity is about 10dBzand in the back region of the moving storms.The spatial distribution of the positive CG flashes is much more dispersivethan that of the negative.The mesoscale analysis reveals a bipolar lightning pattern.The mean bipole--length reaches itsminimum during the mature stage of the storm and reaches the maximum during the developing stage of the storm.The vertical distribution of the charge density is calculated by a one-dimensional charging model.Then,we discussthe producing condition of the positive CG lightning and forming cause of charge structure mentioned above. | Yan Muhong Guo Changming Qie Xiushu Ge Zhengmo Zhang Guangshu Lanzhou Institute of Plateau Atmospheric Physics,Academia Sinica,Lanzhou 730000 | 1992 | Acta meteorologica Sinica1992，6，4： | 16 |
| 5 | ANALYSIS OF CLOUD-TO-GROUND LIGHTNING CHARACTERISTICS IN MESOSCALE STORM IN BELIING AREA显示文摘The research indicates that there is a positive correlation between the negative CG flash rate and the area of radarecho with its reflectivity being equal to or greater than 30 dBz in the mesoscale convective system in Beijing area.A max-imum of the positive CG flash rate exists at both the initial and the dissipating stages.The CG flashes are usually locatednear but not within the high reflectivity center.The negative flashes are associated with.the positions of the updraft re-gion,and with the regions of wind convergence and wind shear.Generally,the negative CG flashes are concentrative andthe positive ones are dispersive. | 葛正谟 言穆弘 GuoChangming 郭昌明 张广庶 | 1992 | Acta meteorologica Sinica1992，6，4： | 16 |
| 6 | Simulation of rainfall-runoff and watershed convergence process in the upper reaches of Heihe River Basin,July 2002显示文摘The watershed flow concentration scheme in the distributed hydrology-soil- vegetation model (DHSVM) is coupled with the mesoscale atmospheric model MM5 version 3.5, in which the Oregen States University land surface model (OSULSM) was involved. The flood event which happened in July 2002 in the upper reaches of Heihe river basin is simulated and the surface flow convergence process is shown with this coupled model. It has been concluded that times water head reaches each place of the basin are different. Water amount at each point is split-flow proportionally as the drops in elevation between it and neighbor points. Large part of the water amount pass away in greater slope direction and small part pass away in smaller slope one.Adding of the slope convergence makes the atmospheric model redistributes the surface water laterally. | GAO Yanhong L(U) Shihua CHENG Guodong | 2004 | Science China Earth Sciences2004，47，z1： | 13 |
| 7 | Case studies on mesoscale structures of heavy rainfall system in the Yangtze River generated by Meiyu front显示文摘A heavy rainfall system was observed over the Yangtze River during Meiyu season by using dual-Doppler radar systems in the field experiment conducted by the project of National Fundamental Research Planning “Research on formation mechanism and the prediction theory of hazardous weather over China”. The three-dimensional mesoscale kinematic structure and process of a heavy rain on 22 and 23 July, 2002 are investigated by using the radial velocity and dual-Doppler radar technique. The results show that a southwest-northeast oriented rain band with the length of about 1000 km involves numbers of meso-β or meso-γ-scale convective cells with the size of 20―50 km. The heavy rain band in the middle reaches of the Yangtze River ex-ists in a low-level wind shear. The interaction between southwest low-level jet on the southern side of wind shear and east wind on the northern side formed the updraft. The wind disturbance, wind shear and convergence generate the convective action. The new cell developed in right rear flank of rain band and moved to the southwest wind area, where the vapor is abundant. This kind of echo can last a long time and developed well. The strong convective echoes are often ac-companied by the meso-γ-scale vortex and convergence. | LIU Liping1, RUAN Zheng1 & QIN Danyu2 1. Chinese Academy of Meteorological Sciences, Beijing 100081, China 2. Nanjing Institute of Meteorology, Nanjing 210044, China | 2005 | Science China Earth Sciences2005，48，8： | 11 |
| 8 | Application of altimetry data assimilation on mesoscale eddies simulation显示文摘Mesoscale eddy plays an important role in the ocean circulation. In order to improve the simulation accuracy of the mesoscale eddies, a three-dimensional variation (3DVAR) data assimilation system called Ocean Variational Analysis System (OVALS) is coupled with a POM model to simulate the mesoscale eddies in the Northwest Pacific Ocean. In this system, the sea surface height anomaly (SSHA) data by satellite altimeters are assimilated and translated into pseudo temperature and salinity (T-S) profile data. Then, these profile data are taken as observation data to be assimilated again and produce the three-dimensional analysis T-S field. According to the characteristics of mesoscale eddy, the most appropriate assimilation parameters are set up and testified in this system. A ten years mesoscale eddies simulation and comparison experiment is made, which includes two schemes: assimilation and non-assimilation. The results of comparison between two schemes and the observation show that the simulation accuracy of the assimilation scheme is much better than that of non-assimilation, which verified that the altimetry data assimilation method can improve the simulation accuracy of the mesoscale dramatically and indicates that it is possible to use this system on the forecast of mesoscale eddies in the future. | GAO Shan WANG Fan LI MingKui CHEN YongLi YAN ChangXiang ZHU Jiang | 2008 | Science China Earth Sciences2008，51，1： | 10 |
| 9 | A new-generation sand and dust storm forecasting system GRAPES_CUACE/Dust:Model development,verification and numerical simulation显示文摘Based on the new-generation Global/Regional Assimilation and PrEdiction System(GRAPES) developed by the Numerical Prediction Research Center,China Meteorological Administration and the Chinese Unified Atmospheric Chemistry Environment for Dust Atmospheric Chemistry Module(CUACE/Dust) developed by the Centre for Atmosphere Watch and Services(CAWAS) of the Chinese Academy of Meteorological Sciences(CAMS) ,the China sand and dust storm forecasting system GRAPES /CUACE-Dust model has been established.The latest data of land desertification,optical properties of China sand and dust aerosols,daily soil moisture and snow cover over China main land was introduced in this system.The system showed good performance in mass conservation.The comparisons of real-time prediction outputs with surface observations and aerosol indices derived from TOMS ozone spectrophotometers(TOMS AI) indicate that the model can predict the outbreak,development,transport and depletion processes of sand and dust storms accurately over China and the East Asian region.The system makes real-time quantitative prediction of a series of elements including sand and dust injection from the surface,dry and wet deposition amount,dust concentration and optical depth.We selected 7 major dust storms occurring in April 2006 and analyzed the spatiotemporal distribution patterns of dust emission,dry and wet deposition and atmospheric load in this paper.The results showed that about 225 million tons of dust were emitted into the atmosphere from the deserts over east Asia in that month.The 3 major sand and dust sources were just as the following:The deserts in northern Inner Mongolia and the boundary area around China-Mongolia were the first dust sources with a contribution of 153 million tons accounting for 68%of the total emission.The Taklimakan Desert ranked second and contributed approximately 40 million tons accounting for 17%of the dust emission.The Onqin Daga Sandland emitted about 15 million tons or 7%of the total emission.The contributions from other deserts,sandy lands and abandoned farmlands were about only 8%of the total dust emission.The total deposition over the East Asian region in April 2006 was 136 million tons.The regional distribution of dust deposition showed that the 3 major sources were also the major deposition areas.The deposition amount in the 3 major sources accounted for 78%of the total with about 135 million tons falling back to the source regions.The secondary deposition area was the China mainland downriver,where more than 2 million tons deposited accounting for 16%of the total deposition.The deposition over the region east of 120°E including China off-shore regions,Korean Peninsula,Japan and the West Pacific took only 6%of the total deposition,which was about 850000 tons.The analysis on dry and wet deposition showed that dry deposition dominated in the process,accounting for 94%of the total sand and dust depositions in the period and wet deposition only was around for 6%,since it was generally dry with less rainfall over northern China in April. | WANG Hong GONG ShanLing ZHANG HongLiang CHEN Yong SHEN XueShun CHEN DeHui XUE JiShan SHEN YuanFang WU XiangJun JIN ZhiYan | 2010 | Chinese Science Bulletin2010，55，7： | 10 |
| 10 | CAPABILITIES AND LIMITATIONS OF GRAPES SIMULATIONS OF EXTREME PRECIPITATION IN THE WARM SECTOR OVER A COMPLEX OROGRAPHY显示文摘A comprehensive observational study on a warm sector torrential rain(WSTR) on 20 May 2016 over south China is presented with a pioneering examination of simulation capabilities based on the Global/Regional Assimilation and Prediction System for Tropical Mesoscale Model(GRAPES_TMM). The results show that the meso-scale convective boundary formed between north wind from mountainous areas and the south wind from plain regions as well as the cold outflows boundary both contribute to the convections over Xinyi, and the convections were blocked and stayed stagnant in the trumpet-shaped topography for about 8 hours which eventually caused the torrential rains.Comparative verifications of the observational studies by simulations showed that GRAPES_TMM had better estimations of large-scale frontal precipitation than the local warm-sector torrential rains. The simulations of local torrential rains in the warm sector showed strong biases in precipitation location and amount. GRAPES_TMM also showed overestimated surface winds and a faster moving speed bias, as well as an overall underestimation of the nocturnal surface temperature during the WSTR. This work may lead to several prospective researches of its model improvements on model physics such as land surface process and PBL parameterization. | 钟水新 杨帅 郭春伢 陈子通 | 2019 | Journal of Tropical Meteorology2019，25，2： | 8 |
| 11 | The mesoscale numerical simulation of the flow field of the Hainan Island and the Leizhou Peninsula显示文摘The flow field over Hainan Island and the Leizhou Peninsula in summer and winter is discussed with three-dimensional mesoscale model developed in the University of Virginia and using the representative meteorological data of January and July.Simulation results indicate that the local weather characteristics over the Hainan Island are distinctly influenced by theWuzhi Mountain terrain. The cloudy or rainfall weather over the northeast of the Wuzhi Mountain occurs easily, under proper large-scale conditions of flow, temperature and humidity. while west wind prevails. The overcast or rainfall weather is often induced by strong convection in the afternoon over west of the Hainan Island under easterly prevailing wind. | Tu Xiaoling, Zhou Mingyu and Sheng Shaohua National Research Center for Marine Environmental Forecast, Beijing 100081, China | 1993 | Acta Oceanologica Sinica1993，12，2： | 7 |
| 12 | A COMPARISON OF THE BLENDING AND CONSTRAINING METHODS TO INTRODUCE LARGE-SCALE INFORMATION INTO GRAPES MESOSCALE ANALYSIS显示文摘To solve the problem of mesoscale analysis error accumulation after a period of continuous cycle data assimilation(CCDA), a blending method and a constraining method are compared to introduce global analysis information into the Global/Regional Assimilation and Prediction Enhanced System mesoscale three-dimensional variational data assimilation system(GRAPES-Meso 3 DVar). Based on a spatial filter used to obtain a blended analysis,the blending method is weighted toward the T639 global analysis for scales larger than the cutoff wavelength of 1,200 km and toward the GRAPES mesoscale analysis for wavelengths below that. The constraining method considers the T639 global analysis data as an extra source of information to be added in the 3 DVar cost function. The cloud-resolving GRAPES-Meso system(3 km resolution) with a 3 h analysis cycle update is chosen, and forecast experiments on an extreme precipitation event over the eastern part of China are presented. The comparison shows that the inclusion of large-scale information with both methods has a positive impact on the regional model, in which the 3 h background forecasts are slightly closer to the radiosonde observations. The results also show that both methods are effective in improving large-scale analysis while reserving the well-featured mesoscale information, leading to an enhancement in the balance and accuracy of the analysis. Subjective verification reveals that the introduction of large-scale information has a visible beneficial impact on the forecast of precipitation location and intensity. The methodologies and experiences presented in this paper could serve as a reference for ongoing efforts toward the development of multi-scale analysis in GRAPES-Meso. | 杨枚锦 龚建东 王瑞春 庄照荣 徐枝芳 | 2019 | Journal of Tropical Meteorology2019，25，2： | 7 |
| 13 | Modeling the axial hydrodynamics of gas-solid counter-current downers显示文摘Gas-solid counter-current downer reactors,in which particles move downward in an upward gas flow,can achieve high solid concentration for high heat and/or mass transfer rates.However,the particles may reverse their direction or even be carried out of the reactor as the gas flow rate increases.This is closely related to 'flooding' in counter-current flows.The energy minimization multiscale (EMMS) model well describes multiscale heterogeneity in gas-solid cocurrent upward flows.It is further developed to simulate gas-solid counter-current downward flows because similar heterogeneity can also be found in downers.The model characterizes well the axial hydrodynamics and predicts an inflexional voidage variation with superficial gas velocity in the fully developed region.This is supported by a simulation based on computational fluid dynamics and the discrete element method.The flooding predicted by the model agrees better with experiment than previous models. | Juanbo Liu Xinhua Liu Zhixin Zhang Hui Zhao Wei Ge | 2020 | Particuology2020，18，3： | 6 |
| 14 | Delayed baroclinic response of the Antarctic circum-polar current to surface wind stress显示文摘The Antarctic Circumpolar Current (ACC) responds to the surface windstress via two processes, i.e., the instant barotropic process and the delayed baroclinic process. This study focuses on the baroclinic instability mechanism in ACC, which was less reported in the literatures. Results show that the strengthening of surface zonal windstress causes the enhanced tilting of the isopycnal surface, leading to more intense baroclinic instability. Simultaneously, the mesoscale eddies resulting from the baro- clinic instability facilitate the transformation of mean potential energy to eddy energy, which causes the remarkable decrease of the ACC volume transport with the 2-year lag time. This delayed negative cor- relation between the ACC transport and the zonal windstress may account for the steadiness of the ACC transport during last two decades. | YANG XiaoYi HUANG RuiXin WANG Jia WANG DongXiao | 2008 | Science China Earth Sciences2008，51，7： | 6 |
| 15 | NUMERICAL SIMULATION OF A MESOSCALE CONVECTIVE SYSTEM(MCS)DURING THE FIRST RAINY SEASON OVER SOUTH CHINA显示文摘Based on the NCEP/NCAR reanalysis data and observations collected during the SCSMEX,amesoscale convective system (MCS) occurring over South China during 23-24 May 1998 has beenstudied with a numerical simulation using the Fifth Generation Penn-State/NCAR MesosealeModeling System (MMS).The successful simulations present us some interesting findings.Thesimulated MCS was a kind of meso-β scale system with a life cycle of about 11 hours.It generatedwithin a small vortex along a cold front shear line.The MCS was characterized by severeconvection.The simulated maximum vertical velocity was greater than 90 cm s-1,and themaximum divergence at about 400 hPa.The rainfall rate of MCS exceeded 20 mm h-1.To theright of the simulated MCS,a mesoscale low-level jet (mLLJ) was found.A strong southwesterlycurrent could also be seen to the right of MCS above the mLLJ.This strong southwesterly currentmight extend up to 400 hPa.A column of cyclonic vorticity extended through most part of theMCS in the vertical direction.Additionally,the simulated MCS was compared favorably with theobservational data in terms of location,precipitation intensity and evolution. | 蒙伟光 王安宇 李江南 冯瑞权 古志明 | 2003 | Acta meteorologica Sinica2003，17，1： | 5 |
| 16 | Locating Parent Lightning Strokes of Sprites Observed over a Mesoscale Convective System in Shandong Province,China显示文摘In this paper, we report the location results for the parent lightning strokes of more than 30 red sprites observed over an asymmetric mesoscale convective system(MCS) on 30 July 2015 in Shandong Province, China, with a long-baseline lightning location network of very-low-frequency/low-frequency magnetic field sensors. The results show that almost all of these cloud-to-ground(CG) strokes are produced during the mature stage of the MCS, and are predominantly located in the trailing stratiform region, which is similar to analyses of sprite-productive MCSs in North America and Europe. Comparison between the location results for the sprite-producing CG strokes and those provided by the World Wide Lightning Location Network(WWLLN) indicates that the location accuracy of WWLLN for intense CG strokes in Shandong Province is typically within 10 km, which is consistent with the result based on analysis of 2838 sprite-producing CG strokes in the continental United States. Also, we analyze two cases where some minor lightning discharges in the parent flash of sprites can also be located, providing an approach to confine the thundercloud region tapped by the sprite-producing CG strokes. | Anjing HUANG Gaopeng LU Hongbo ZHANG Feifan LIU Yanfeng FAN Baoyou ZHU Jing YANG Zhichao WANG | 2018 | Advances in Atmospheric Sciences2018，35，11： | 5 |
| 17 | Numerical Simulation of Wind and Temperature Fields over Beijing Area in Summer显示文摘The non-hydrostatic mesoscale model MM5V3 is used to simulate the wind and temperature fields of the atmospheric boundary layer over Beijing area in summer with the mesh resolution of 1 km. The simulation results show that the numerical model can successfully simulate the urban heat island effect and the wind and temperature fields which are affected by the complicated topography and urban heat island. The results show that: (1) the west area (from Haidian to Fengtai Districts) is always the high temperature center of Beijing, where the surface temperature is about 6 K higher than the other suburbs; and (2) due to the unique topography the wind of Beijing area during the daytime is southern anabatic wind and at the night is northern katabatic wind. The results comparing well with the data from surface observation stations validate the accuracy of the simulation. | 胡小明 刘树华 王迎春 李矩 | 2005 | Acta meteorologica Sinica2005，19，1： | 5 |
| 18 | Complexity at Mesoscales:A Common Challenge in Developing Artificial Intelligence显示文摘Exploring the physical mechanisms of complex systems and making effective use of them are the keys to dealing with the complexity of the world.The emergence of big data and the enhancement of computing power,in conjunction with the improvement of optimization algorithms,are leading to the development of artificial intelligence(AI)driven by deep learning.However,deep learning fails to reveal the underlying logic and physical connotations of the problems being solved.Mesoscience provides a concept to understand the mechanism of the spatiotemporal multiscale structure of complex systems,and its capability for analyzing complex problems has been validated in different fields.This paper proposes a research paradigm for AI,which introduces the analytical principles of mesoscience into the design of deep learning models.This is done to address the fundamental problem of deep learning models detaching the physical prototype from the problem being solved;the purpose is to promote the sustainable development of AI. | Li Guo Jun Wu Jinghai Li | 2019 | Engineering2019，5，5： | 5 |
| 19 | A MESO-β SCALE SIMULATION OF THE EFFECTS OF BOREAL FOREST ECOSYSTEM ON THE LOWER ATMOSPHERE显示文摘Based on the Intensive Field Campaign (IFC-I) data of Boreal Ecosystem-Atmosphere Study(BOREAS), a three-dimensional meso-β scale model is used to simulate the effect of boreal forests on the lower atmosphere. A fine horizontal resolution of 2 km × 2 km is used in order to distinguish the vegetative heterogeneity in the boreal region. A total of 20 × 25 grid points cover the entire sub modeling area in BOREAS' South Study Area (SSA). The ecosystem types and their coverage in each grid square are extracted from the North American Land Cover Characteristics Data Base(NALCCD) generated by the U.S. Geographical Survey (USGS) and the University of Nebraska Lincoln (UNL). The topography of the study area is taken from the Digital Elevation Map (DEM)of USGS. The model outputs include the components of the energy balance budget within the canopy and at the ground, the turbulence parameters in the atmospheric boundary layer and the wind,temperature and humidity profiles extending up to a height of 1500 m. In addition to the fine time nd spatial step, the unique feature of the present model is the incorporation of both dynamic and biological effects of the Boreal forest into the model parameterization scheme. The model results compare favorably with BOREAS' IFC-1 data in 1994 when the forest was in the luxuriant growing period. | 王汉杰 Yi-FanLI AloysiusK.LO | 2001 | Acta meteorologica Sinica2001，15，1： | 4 |
| 20 | Selective synthesis of triacetin from glycerol catalyzed by HZSM-5/MCM-41 micro/mesoporous molecular sieve显示文摘HZSM-5/MCM-41 molecular sieve (H-ZM) catalysts with well-defined micro/mesoporous structures were synthesized and showed high performance for selective synthesis of triacetin via the esterification reaction of glycerol with acetic acid. The conversion of glycerol was demonstrated to be 100% and the triacetin selectivity was over 91%, which can be attributed to the synergistic effect regarding suitable acidic property, excellent diffusion efficiency and good stability derived from the combined advantages of microporous molecular sieve HZSM-5 and mesoporous molecular sieve MCM-41. | Jiangyong Liu Zihao Wang Yunlin Sun Ruiqi Jian Panming jian Dan Wang | 2019 | Chinese Journal of Chemical Engineering2019，27，5： | 3 |
您所在的机构暂未开通此部分的功能，请联系管理员