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Progress in Natural Science:Materials International 2008年第4期18卷 413-419页

作者： Xiaopeng Cui , Shouting Gao laboratory of cloud-precipitation physics and {4. storms, institute of atmospheric physics, chinese academy of sciences, beijing 100029, China laboratory of cloud-precipitation physics and {4. storms Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

The effects of zonal perturbations of sea surface temperature (SST) on tropical equilibrium states are investigated based on a series of two-dimensional cloud-resolving simulations with imposed zero vertical velocity, constant zonal wind, and a zonal model domain of 768 km. Four experiments with zonal SST perturbations of wavenumbers 1 (C1), 2 (C2), 4.(C3), and 8 (C4. are compared to a control experiment with zonally uniform SST (C0). The 4.-day integrations show that the temperatures reach quasi-equilibrium states with dis- tinct differences. C1 and C2 produce warmer equilibrium states whereas C3 and C4.generate colder equilibrium states than C0 does. The heat budgets in the five experiments are analyzed. Compared to C0, less IR cooling over smaller clear-sky regions in C1 and more con- densational heating in C2 are responsible for warmer equilibrium states. A reduced condensational heating leads to the cold equilibrium state in C3. The interaction between convective systems in C4.causes a decrease of condensational heating, which accounts for the cold equilibrium state.

关键词： Tropical equilibrium states Sea surface temperature Zonal perturbation cloud-resolving modeling study

Application of the moist vorticity vector in the analysis of a heavy rainfall event in North China

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Progress in Natural Science:Materials International 2007年第12期17卷 1457-1465页

作者： Zhao Yu1,2,3, Wang Jianguo4.and Xue Deqiang2(1. laboratory of cloud-precipitation physics and {4. storms, institute of atmospheric physics, chinese academy of sciences, beijing 100029, China 2. Shandong Provincial Meteorological Observatory, Jinan 250031, China 3. Graduate University of chinese academy of sciences, beijing 100039, China 4. Shandong Provincial Meteorological Bureau, Jinan 250031, China) laboratory of cloud-precipitation physics and {4. storms Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Shandong Provincial Meteorological Observatory Jinan 250031 China Graduate University of chinese academy of sciences Beijing 100039 China Shandong Provincial Meteorological Bureau Jinan 250031 China

The moist vorticity vector (MVV), defined as (ζa×▽qv)/ρ introduced by Gao et al. is used to study a heavy rainfall event in North China. The MVV has zonal, meridional and vertical components in a three-dimensional framework. Analysis of domain-mean and mass-integrated quantities shows that the variation of the vertical component of the MVV closely follows the variation of the cloud hydrometeors, with a linear correlation coefficient of 0.95, indicating that the vertical component of the MVV is strongly associated with midlatitude convection. Further analysis shows that the vertical component of the MVV reflects the interaction between the horizontal vorticity and the horizontal specific humidity gradient, which can associate dynamic and thermodynamic processes with cloud microphysical processes. Thus, this study can help to understand how the interaction between circulations and clouds aids the development of convection, and the MVV can be used to trace the development and evolution of heavy rainfall.

关键词： moist vorticity vector heavy rainfall modeling study.

Diagnostic analysis of mesoscale rainstorms in the Jiang-Huai valley of China with convective vorticity vector

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Progress in Natural Science:Materials International 2007年第5期17卷 559-568页

作者： Cui Xiaopeng, Gao Shouting and Li Xiaofan (laboratory of cloud-precipitation physics and {4. storms (LACS), institute of atmospheric physics, chinese academy of sciences, beijing 100029, China Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Center for Satellite Applications and Research, Camp Springs, Maryland, USA) laboratory of cloud-precipitation physics and {4. storms (LACS) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Center for Satellite Applications and Research Camp Springs Maryland USA

By the vector product of absolute vorticity vectors and equivalent potential temperature gradients, a new vector, convec-tive vorticity vector (CVV) is readdressed after Gao et al., and is applied to the study of the development and movement of mesoscale rainstorms in the Jiang-Huai valley of China by using high-resolution simulation data with PSU/NCAR MM5 briefly. The results show that the CVV, especially its vertical component which is closely related to interactions between vertical secondary circulations and horizontal equivalent potential temperature gradients, may be a good tracer and diagnostic tool in the study of mesoscale rainstorms in the Jiang-Huai valley of China. And the main physical processes responsible for the variations of the vertical component of the CVV are discussed briefly based on its tendency equation proposed in this article.

关键词： convective vorticity vector mesoscale rainstorms tendency equations.

Investigation of fine and complex vortex circulation structures

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Science China Earth sciences 2010年第10期53卷 1552-1558页

作者： LUO ZheXian1,MA GeLan1 & PING Fan2 1 Remote Sensing College,Nanjing University of Information Science and Technology,Nanjing 21004.,China 2 laboratory of cloud-precipitation physics and severe storms(LACS),institute of atmospheric physics,chinese academy of sciences,beijing 100029,China Remote Sensing College Nanjing University of Information Science and Technology Nanjing China laboratory of cloud-precipitation physics and {4. storms (LACS) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing China

The formation and evolution of fine and complicated vortex circulation structures were investigated using a two-dimensional quasi-geostrophic barotropic model *** find that the highly localized asymmetric and complex configuration of energy transfer flux between large-and small-scale components is caused by the nonlinear interaction between a large-scale vortex with an initial axi-symmetric flow and four beta meso-scale *** complex structure is characterized by a fine pattern,which contains seven closed systems with spatial scales of less than 100 km,embedded in a positive flux wave train and a negative wave train,*** average wind speed decreased with time in the positive flux region,but was nearly unchanged in the negative flux *** pattern reveals the evolutionary asymmetry and localization of wind speed of the major *** track of the major vortex center has a trend toward the center of the negative flux center,indicating that there is a certain relation between the complex structure of the energy transfer flux and the motion of the major vortex *** results imply that the formation and evolution of the fine and complex structure should be attributed to the nonlinear interaction between the vortices at different spatial scales.

关键词： vortex complex structure non-linear interaction energy cascade

A modeling study of relation between cloud amount and SST over Western Tropical Pacific cloudy regions during TOGA COARE

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Progress in Natural Science:Materials International 2009年第2期19卷 187-193页

作者： Shouting Gaoa,Xiaopeng Cui a,Xiaofan Li b a laboratory of cloud-precipitation physics and {4. storms (LACS),institute of atmospheric physics,chinese academy of sciences,beijing 100029,China b Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Center for Satellite Applications and Research,Camp Springs,MD,USA laboratory of cloud-precipitation physics and {4. storms (LACS) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Center for Satellite Applications and Research Camp Springs MD USA

The relationship between cloud amount and sea surface temperature (SST) over Western Tropical Pacific cloudy regions during TOGA COARE is investigated based on hourly grid simulation data from a two-dimensional coupled ocean-cloud resolving atmosphere model. The model is forced by the large-scale vertical velocity and zonal wind observed and derived from TOGA COARE for a 50-day period. The cloud amount becomes smaller when the ocean surface gets warmer,which is similar to previous relations obtained from observational analyses. As SST increases,the {4. temperature increases whereas the surface sensible heat flux decreases. The {4. water vapor is not sensitive to SST whereas the surface evaporation flux decreases as SST increases. These indicate that the oceanic effects do not play an important role in determining {4. heat and water vapor budgets. The cold atmosphere pro-duces a larger amount of ice clouds that cover a larger area than the warm atmosphere does. The large amounts of ice clouds lead to cooling of the ocean surface through reflecting large amount of solar radiation back to the space. Thus,the negative correlation between the cloud amount and SST only accounts for the important {4. effects on the ocean.

关键词： cloud amount Sea surface temperature Coupled ocean-cloud resolving atmosphere model TOGA COARE

cloud microphysical and rainfall responses to zonal perturbations of sea surface temperature:A cloud-resolving modeling study

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Progress in Natural Science:Materials International 2009年第5期19卷 587-594页

作者： Xiaopeng Cuia, Xiaofan Lib, Zhiping Zongc a laboratory of cloud-precipitation physics and {4. storms (LACS), institute of atmospheric physics, chinese academy of sciences, beijing 100029, China b Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Office of Research and Applications, Camp Springs, MD, USA c National Meteorological Center, China Meteorological Administration, beijing 100081, China laboratory of cloud-precipitation physics and {4. storms (LACS) Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China Joint Center for Satellite Data Assimilation and NOAA/NESDIS/Office of Research and Applications Camp Springs MD USA National Meteorological Center China Meteorological Administration Beijing 100081 China

The cloud microphysical and rainfall responses to zonal perturbations of sea surface temperature (SST) are investigated by analyzing the equilibrium simulation data (from day 31-4.) obtained from a series of two-dimensional cloud-resolving simulations with a zonal model domain of 768 km. Four experiments imposed by zonal SST perturbations of wavenumbers 1 (SST29Z1), 2 (SST29Z2), 4.(SST29Z4., and 8 (SST29Z8) are compared to the control experiment imposed by zonally uniform SST (SST29). The model domain mean SST is 29 °C, and the two-dimensional cloud-resolving model with a cyclic lateral boundary is also imposed by zero vertical velocity and constant zonal wind. The time and model domain mean surface rain rates in SST29Z1, SST29Z2, and SST29Z8 are about 10% larger than those in SST29, whereas the mean surface rain rates in SST29Z4.and SST29 are similar. The analysis of mean surface rainfall budgets shows that local water vapor and hydrometeor changes play important roles in determining the differences and similarities in mean surface rain rate between the perturbation experiments and the control experiment. Both convective and stratiform rain rates are larger in SST29Z1 and SST29Z2 than in SST29 due to the smaller advection of rain from convective regions into raining stratiform regions and the larger vapor condensation rates associated with the larger water vapor convergence over raining stratiform regions in SST29Z1 and SST29Z2. The convective rain rates are larger in SST29Z4.and SST29Z8 than in SST29 because of the larger condensation rates associated with the larger water vapor convergence over convective regions in SST29Z4.and SST29Z8. The stratiform rain rates in SST29Z4.and SST29Z8 are smaller than in SST29 due to the smaller vapor condensation rates and smaller collection rates of cloud water by rain over raining stratiform regions in SST29Z4.and SST29Z8.

关键词： cloud microphysical and rainfall responses Sea surface temperature Zonal perturbation cloud-resolving modeling study

The statistical characteristics of the atmospheric water over tropical western Pacific ' warm pool' during TOGA COARE IOP

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chinese Science Bulletin 1997年第12期42卷 1005-1009页

作者： WEI Chong and XUAN Yuejianinstitute of atmospheric physics, chinese academy of sciences, beijing 100029, China institute of atmospheric physics Chinese Academy of Sciences Fkijing China

THIS note gives the statistical analyses of continuous measurements with high time resolution(5 min)of atmospheric water(including precipitable water vapor,vertically path-integratedcloud liquid water content and rain intensity)over the tropical western Pacific at a fixed point(2°S,158°E)during TOGA COARE IOP(1992-11—1993-02).Some comparisons are madebetween these statistical results and those of the measurments obtained during previous meteo-

关键词： microwave remote sensing western Pacific ’ warm pool’ cloud liquid water water vapor tropical precipitation.

The formation process and cloud physical characteristics for a typical downburstproducing thunderstorm in beijing

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chinese Science Bulletin 2003年第S2期48卷 77-82页

作者： GUO Xueliang FU Danhong institute of Almospherie physics, chinese academy of sciences, beijing 100029. China chinese Acad Sci Inst Atmospher Phys Beijing 100029 Peoples R China

The formation process and characteristics ofcloud physical structure of a severe thunderstorm accompa-nied with strong wind on 23 August, 2001 in beijing wasstudied using PSU/NCAR mesoscale model ( MM5) couplingwith a severe storm model with hail-bin micro{4.. Theresults show that the specific topography and distributionfeatures of cold/warm current in the beijing region playedprominent roles in forming, developing and maintaining thesevere storm. Due to solar radiation heating and topographiclifting, the convective cells were easily formed when thewesterly airflow passed over high mountainous regions inbeijing. The warm and wet air entered the cloud from itsfrontage and enhanced the convection, and formed a largeamount of graupel/hail particles at the middle and upperportion of the clouds. The precipitation was primarilyformed due to melting of graupel/hail particles. The strongdowndraft was mainly produced by negative buoyancy dueto loading, melting of graupel/hail particles as well asevaporative cooling of rain water. The divergent airflow in-duced by the strong downdraft led to the disastrous burstwinds at the surface and also forced lifting of warm and wetairflow in the moving direction of the storm and formed newclouds that further promoted and maintained the storm de-velopment.

关键词： beijing region thunderstorm and disastrous wind cluud physical features.

A cloud-resolving modeling study of diurnal variations of tropical convective and stratiform rainfall

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A cloud-resolving modeling study of diurnal variations of tr...

Impact of climate change on dynamic of plant communities, lakes and swamps in beijing area during Holocene period

第七届全国优秀青年气象科技工作者学术研讨会

作者： Xiaopeng Cui1 laboratory of cloud-precipitation physics and {4. storms, institute of atmospheric physics, chinese academy of sciences, beijing, China.

Diurnal variations of convective and stratiform rainfalls over the tropical ocean are investigated on the basis of data from a two-dimensional cloud-resolving simulation. The model is integrated for 4. days to a quasi-equilibrium state with imposed zero zonally uniform vertical velocity, a constant zonal wind, and a constant sea surface temperature of 29°C. The convective rain rate contributes more to the diurnal variation of model domain- mean surface rain rate than the stratiform rain rate does. The calculations of the surface rainfall equation show that more vapor convergence yields higher convective rain rate and that more vapor convergence and more local vapor loss cause higher stratiform rain rate in early morning than in afternoon. Analysis of cloud microphysics budgets reveals that variations in vapor condensation and associated water microphysical processes are responsible for the diurnal variations of both convective and stratiform rain rates.

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Journal of Geographical sciences 1999年第2期9卷 116-122页

作者： Zhang jia-hua Kong Zhao-chen Fu Cong-bin (START, institute of atmospheric physics, chinese academy of sciences, beijing 100029,China. institute of Botany, chinese academy of sciences, beijing 100093, China)

From 4.0-60 cm 26 samples were obtained in an 820 cm profile at Dongganchi of Fangshan in beijing. They provided a continuous record of vegetation and environmental changes over ca .7000 aB.P., as inferred from Spore-pollen. loss-on-ignition (LOI), and charcoal analysis,impacts of natural fire and human activities on plant communities and lakes and swamps were considered. 1) From 7000-5960 aB.P, the forest development was limited, probably in response to climate Warming. Aquatic and marsh plants began to increase, bat the lakes and swamps in some areas were limited. 2) About 5960-3390 aB.p, presumably in responded to climate warming which was warmer than that at present Aquatic plants began to become abundant,reflected the widespread development of the lakes and swamps, the climate was wet with annual precipitation higher than that at present 3) About 3390-1000 aB.P, human activities have kept to be the dominating factor in the evolution of vegetation and climatic change. Temperature decreased, and the annual precipitation rapidly reduced in Baijing area. the lakes and swamps gradually shrank back, some of them even disappeared. 4. After 1000 aB.P, there was a severe fluntuction, and early during this time, it was comparatively warm and humid, but became cool and dry later. In the meantime. human activities were intensified. agricultural activity was flourished. and large area of water field was cultivated

关键词： plant communities. lakes and swamps, pollen analysis, Holocene. Dongganchi profile beijing