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Characteristics of atmospheric boundary layer structure and its influencing factors under different sea and land positions in Europe
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作者 YeHui Zhang XinPeng Yong +2 位作者 HouFu Zhou HaiYang Gao Na Yang 《Earth and Planetary Physics》 EI CSCD 2023年第2期257-268,共12页
This study identifies quantitatively the dominant contributions of meteorological factors on the development of the boundary layer heights(BLH)in the European region,based on 32 years(1990-2021)of radiosonde observati... This study identifies quantitatively the dominant contributions of meteorological factors on the development of the boundary layer heights(BLH)in the European region,based on 32 years(1990-2021)of radiosonde observations.The spatial variability of the BLH is further discussed by location,by classifying recording stations as inland,coastal,or bay.We find that the BLH in Europe varies considerably from day to night and with the seasons.Nighttime BLH is higher in winter and lower in summer,with the highest BLH recorded at coastal stations.Daytime BLH at coastal stations shows a bimodal structure with peaks in spring and autumn;at inland and bay stations,daytime BLH is lower in winter and higher in summer.The daily amplitudes of BLH at the inland and bay stations are stronger than those at coastal stations.Based on our multiple linear regression analysis and our decoupling analysis of temperature and specific humidity,we report that the development of the nighttime BLH at all types of stations is strongly dominated by the variations of surface wind speed(and,at coastal stations,wind directions).The main contributors to daytime BLH are the near-surface temperature variability at most coastal and inland stations,and,at most bay stations,the variation of the near-surface specific humidity. 展开更多
关键词 atmospheric boundary layer height WIND surface temperature specific humidity DECOUPLING
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The Influence of Convergence Movement on Turbulent Transportation in the Atmospheric Boundary Layer 被引量:15
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作者 胡隐樵 左洪超 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2003年第5期794-798,共5页
Classical turbulent K closure theory of the atmospheric boundary layer assumes that the vertical turbulent transport flux of any macroscopic quantity is equivalent to that quantity's vertical gradient transport fl... Classical turbulent K closure theory of the atmospheric boundary layer assumes that the vertical turbulent transport flux of any macroscopic quantity is equivalent to that quantity's vertical gradient transport flux. But a cross coupling between the thermodynamic processes and the dynamic processes in the atmospheric system is demonstrated based on the Curier-Prigogine principle of cross coupling of linear thermodynamics. The vertical turbulent transportation of energy and substance in the atmospheric boundary layer is related not only to their macroscopic gradient but also to the convergence and the divergence movement. The transportation of the convergence or divergence movement is important for the atmospheric boundary layer of the heterogeneous underlying surface and the convection boundary layer. Based on this, the turbulent transportation in the atmospheric boundary layer, the energy budget of the heterogeneous underlying surface and the convection boundary layer, and the boundary layer parameterization of land surface processes over the heterogeneous underlying surface are studied. This research offers clues not only for establishing the atmospheric boundary layer theory about the heterogeneous underlying surface, but also for overcoming the difficulties encountered recently in the application of the atmospheric boundary layer theory. 展开更多
关键词 linear thermodynamics turbulent transportation cross coupling atmospheric boundary layer heterogeneous underlying surface
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Using a Modified Soil-Plant-Atmosphere Scheme(MSPAS)to Simulate the Interaction between Land Surface Processes and Atmospheric Boundary Layer in Semi-Arid Regions 被引量:20
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作者 树华 乐旭 +1 位作者 胡非 刘辉志 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2004年第2期245-259,共15页
This paper uses a Modified Soil-Plant-Atmosphere Scheme (MSPAS) to study the interaction between land surface and atmospheric boundary layer processes. The scheme is composed of two main parts: atmospheric boundary la... This paper uses a Modified Soil-Plant-Atmosphere Scheme (MSPAS) to study the interaction between land surface and atmospheric boundary layer processes. The scheme is composed of two main parts: atmospheric boundary layer processes and land surface processes. Compared with SiB and BATS, which are famous for their detailed parameterizations of physical variables, this simplified model is more convenient and saves much more computation time. Though simple, the feasibility of the model is well proved in this paper. The numerical simulation results from MSPAS show good agreement with reality. The scheme is used to obtain reasonable simulations for diurnal variations of heat balance, potential temperature of boundary layer, and wind field, and spatial distributions of temperature, specific humidity, vertical velocity, turbulence kinetic energy, and turbulence exchange coefficient over desert and oasis. In addition, MSPAS is used to simulate the interaction between desert and oasis at night, and again it obtains reasonable results. This indicates that MSPAS can be used to study the interaction between land surface processes and the atmospheric boundary layer over various underlying surfaces and can be extended for regional climate and numerical weather prediction study. 展开更多
关键词 modified soil-plant-atmosphere scheme (MSPAS) land surface processes (LSP) atmospheric boundary layer
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Diurnal Variations of Air Pollution and Atmospheric Boundary Layer Structure in Beijing During Winter 2000/2001 被引量:12
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作者 周丽 徐祥德 +2 位作者 丁国安 周明煜 程兴宏 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2005年第1期126-132,共7页
The diurnal variations of gaseous pollutants and the dynamical and thermodynamic structures of the atmospheric boundary layer (ABL) in the Beijing area from January to March 2001 are analyzed in this study using data ... The diurnal variations of gaseous pollutants and the dynamical and thermodynamic structures of the atmospheric boundary layer (ABL) in the Beijing area from January to March 2001 are analyzed in this study using data from the Beijing City Air Pollution Observation Field Experiment (BECAPEX). A heavy pollution day (22 February) and a good air quality day (24 February) are selected and individually analyzed and compared to reveal the relationships between gaseous pollutants and the diurnal variations of the ABL. The results show that gaseous pollutant concentrations exhibit a double-peak-double-valley-type diurnal variation and have similar trends but with different magnitudes at different sites in Beijing. The diurnal variation of the gaseous pollutant concentrations is closely related to (with a 1-2 hour delay of) changes in the atmospheric stability and the mean kinetic energy in the ABL. 展开更多
关键词 BEIJING air pollutant diurnal variation atmospheric boundary layer
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Structures and Characteristics of the Windy Atmospheric Boundary Layer in the South China Sea Region during Cold Surges 被引量:3
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作者 CHENG Xue-Ling HUANG Jian +1 位作者 WU Lin ZENG Qing-Cun 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 2015年第6期772-782,共11页
An observational analysis of the structures and characteristics of a windy atmospheric boundary layer during a cold air outbreak in the South China Sea region is reported in this paper. It is found that the main struc... An observational analysis of the structures and characteristics of a windy atmospheric boundary layer during a cold air outbreak in the South China Sea region is reported in this paper. It is found that the main structures and characteristics are the same as during strong wind episodes with cold air outbreaks on land. The high frequency turbulent fluctuations (period 〈 1 min) are nearly random and isotropic with weak coherency, but the gusty wind disturbances (1 rain〈period 〈 10 min) are anisotropic with rather strong coherency. However, in the windy atmospheric boundary layer at sea, compared with that over land, there are some pronounced differences: (1) the average horizontal speed is almost independent of height, and the vertical velocity is positive in the lower marine atmospheric boundary layer; (2) the vertical flux of horizontal momentum is nearly independent of height in the low layer indicating the existence of a constant flux layer, unlike during strong wind over the land surface; (3) the kinetic energy and friction velocity of turbulent fluctuations are larger than those of gusty disturbances; (4) due to the independence of horizontal speed to height, the horizontal speed itself (not its vertical gradient used over the land surface) can be used as the key parameter to parameterize the turbulent and gusty characteristics with high accuracy. 展开更多
关键词 TURBULENCE wind gust coherent structure cold surge windy marine atmospheric boundary layer
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Large eddy simulation of high-Reynolds-number atmospheric boundary layer flow with improved near-wall correction 被引量:1
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作者 Shengjun FENG Xiaojing ZHENG +1 位作者 Ruifeng HU Ping WANG 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI CSCD 2020年第1期33-50,共18页
It is highly attractive to develop an efficient and flexible large eddy simulation(LES)technique for high-Reynolds-number atmospheric boundary layer(ABL)simulation using the low-order numerical scheme on a relatively ... It is highly attractive to develop an efficient and flexible large eddy simulation(LES)technique for high-Reynolds-number atmospheric boundary layer(ABL)simulation using the low-order numerical scheme on a relatively coarse grid,that could reproduce the logarithmic profile of the mean velocity and some key features of large-scale coherent structures in the outer layer.In this study,an improved near-wall correction scheme for the vertical gradient of the resolved streamwise velocity in the strain-rate tensor is proposed to calculate the eddy viscosity coefficient in the subgrid-scale(SGS)model.The LES code is realized with a second-order finite-difference scheme,the scale-dependent dynamic SGS stress model,the equilibrium wall stress model,and the proposed correction scheme.Very-high-Reynolds-number ABL flow simulation under the neutral stratification condition is conducted to assess the performance of the method in predicting the mean and fluctuating characteristics of the rough-wall turbulence.It is found that the logarithmic profile of the mean streamwise velocity and some key features of large-scale coherent structures can be reasonably predicted by adopting the proposed correction method and the low-order numerical scheme. 展开更多
关键词 atmospheric boundary layer near-wall correction large-eddy simulation(LES) very-large-scale motion
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Study on Clouds and Marine Atmospheric Boundary Layer 被引量:2
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作者 赵柏林 甄进明 +3 位作者 胡成达 杜金林 朱元竞 张呈祥 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1992年第4期383-396,共14页
A set of remote sensing instruments of Peking University, which includes mainly a dual-channel(22.235GHz and 35.5GHz) microwave radiometer, a 8mm microwave and a 5mm microwave radiometer, has been developed for the We... A set of remote sensing instruments of Peking University, which includes mainly a dual-channel(22.235GHz and 35.5GHz) microwave radiometer, a 8mm microwave and a 5mm microwave radiometer, has been developed for the Western North-Pacific Cloud-Radiation Experiment (WENPEX). The instruments were used to observe the cloud and marine atmospheric boundary-layer in the southwest sea area of Japan in winter time from 1989 to 1991.In the weather change process, the characteristics of the marine atmospheric boundary-layer and liquid water content in cloud of this area in winter time are studied from observation data. A one-dimensional mixed layer model is presented for the growth and evolution of a cloud-topped marine boundary-layer. The model is used to study in the WENPEX. The simulation results are in agreement with observation data, especially the integral water in cloud. 展开更多
关键词 Study on Clouds and Marine atmospheric boundary layer
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HEIGHT OF ATMOSPHERIC BOUNDARY LAYER AS DETECTED BY COSMIC GPS RADIO OCCULTATION DATA
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作者 刘艳 唐南军 杨学胜 《Journal of Tropical Meteorology》 SCIE 2016年第1期74-82,共9页
The characteristics of the atmospheric boundary layer height over the global ocean were studied based on the Constellation Observation System of Meteorology,Ionosphere and Climate(COSMIC) refractivity data from 2007 t... The characteristics of the atmospheric boundary layer height over the global ocean were studied based on the Constellation Observation System of Meteorology,Ionosphere and Climate(COSMIC) refractivity data from 2007 to2012.Results show that the height is much characteristic of seasonal,inter-annual and regional variation.Globally,the spatial distribution of the annual mean top height shows a symmetrical zonal structure,which is more zonal in the Southern Hemisphere than in the Northern Hemisphere.The boundary layer top is highest in the tropics and gradually decreases towards higher latitudes.The height is in a range of 3 to 3.5 km in the tropics,2 to 2.5 km in the subtropical regions,and 1 to 1.5 km or even lower in middle and high latitudes.The diurnal variation of the top height is not obvious,with the height varying from tens to hundreds of meters.Furthermore,it is different from region to region,some regions have the maximum height during 9:00 to 12:00,others at 15:00 to18:00. 展开更多
关键词 statistical characteristics atmospheric boundary layer height REFRACTIVITY COSMIC/GPS
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Structure and seasonal changes in atmospheric boundary layer on coast of the east Antarctic continent
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作者 BIAN Lingen ZOU Han +3 位作者 LIN Zhong ZHANG Dongqi Annette Rinke Klaus Dethloff 《Advances in Polar Science》 2013年第3期139-146,共8页
The temperature, humidity, and vertical distribution of ozone in the Antarctic atmospheric boundary layer(ABL) and their seasonal changes are analyzed, by using the high-resolution profile data obtained during the I... The temperature, humidity, and vertical distribution of ozone in the Antarctic atmospheric boundary layer(ABL) and their seasonal changes are analyzed, by using the high-resolution profile data obtained during the International Polar Year 2008 to 2009 at Zhongshan Station, to further the understanding of the structure and processes of the ABL. The results show that the fre- quency of the convective boundary layer in the warm season accounts for 84% of its annual occurrence frequency. The frequency of the stable boundary layer in the cold season accounts for 71% of its annual occurrence frequency. A neutral boundary layer ap- pears rarely. The average altitude of the convective boundary layer determined by the parcel method is 600 m; this is 200 to 300 m higher than that over inland Antarctica. The average altitude of the top of the boundary layer determined by the potential tempera- ture gradient and humidity gradient is 1 200 m in the warm season and 1 500 m in the cold season. The vertical structures of ozone and specific humidity in the ABL exhibit obvious seasonal changes. The specific humidity is very high with greater vertical gradi- ent in the warm season and very low with a lesser gradient in the cold season under 2 000 m. The atmospheric ozone in the ABL is consumed by photochemical processes in the warm season, which results in a slight difference in altitude. The sub-highest ozone center is located in the boundary layer, indicating that the ozone transferred from the stratosphere to the troposphere reaches the low boundary layer during October and November in Antarctica. 展开更多
关键词 coast of the east Antarctic continent structure of the atmospheric boundary layer OZONE seasonal changes
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STUDIES ON RETRIEVAL OF THE TURBULIVITY OF ATMOSPHERIC BOUNDARY LAYER 被引量:8
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作者 WANG Ting-fang HUANG Si-xun XIANG Jie 《Journal of Hydrodynamics》 SCIE EI CSCD 2006年第2期177-183,共7页
The variational adjoint method was applied to retrieving the turbulivity of the atmospheric Ekman boundary layer along with the regularization principle, The validity of the method was verified by using the idealized ... The variational adjoint method was applied to retrieving the turbulivity of the atmospheric Ekman boundary layer along with the regularization principle, The validity of the method was verified by using the idealized data, and then the turbulivity profile and the geostrophic wind profile were retrieved through it for real observational wind filed data. 展开更多
关键词 atmospheric boundary layer turbulivity Tikhonov regularization principle parameter retrieval
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Research Progress on Estimation of the Atmospheric Boundary Layer Height 被引量:5
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作者 Hongsheng ZHANG Xiaoye ZHANG +8 位作者 Qianhui LI Xuhui CAI Shaojia FAN Yu SONG Fei HU Huizheng CHE Jiannong QUAN Ling KANG Tong ZHU 《Journal of Meteorological Research》 SCIE CSCD 2020年第3期482-498,共17页
Atmospheric boundary layer height(ABLH)is an important parameter used to depict characteristics of the planetary boundary layer(PBL)in the lower troposphere.The ABLH is strongly associated with the vertical distributi... Atmospheric boundary layer height(ABLH)is an important parameter used to depict characteristics of the planetary boundary layer(PBL)in the lower troposphere.The ABLH is strongly associated with the vertical distributions of heat,mass,and energy in the PBL,and it is a key quantity in numerical simulation of the PBL and plays an essential role in atmospheric environmental assessment.In this paper,various definitions and methods for deriving and estimating the ABLH are summarized,from the perspectives of turbulent motion,PBL dynamics and thermodynamics,and distributions of various substances in the PBL.Different methods for determining the ABLH by means of direct observation and remote sensing retrieval are reviewed,and comparisons of the advantages and disadvantages of these methods are presented.The paper also summarizes the ABLH parameterization schemes,discusses current problems in the estimation of ABLH,and finally points out the directions for possible future breakthroughs in the ABLHrelated research and application. 展开更多
关键词 atmospheric boundary layer height(ABLH) turbulent boundary layer aerosol accumulation layer remote sensing retrieval PARAMETERIZATION
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A Study of the Atmospheric Boundary Layer Structure During a Clear Day in the Arid Region of Northwest China 被引量:4
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作者 张强 王胜 《Acta meteorologica Sinica》 SCIE 2009年第3期327-337,共11页
The local climate and atmospheric circulation pattern exert a clear influence on the atmospheric boundary layer (ABL) formation and development in Northwest China. In this paper, we use field observational data to a... The local climate and atmospheric circulation pattern exert a clear influence on the atmospheric boundary layer (ABL) formation and development in Northwest China. In this paper, we use field observational data to analyze the distribution and characteristics of the ABL in the extremely arid desert in Dunhuang, Northwest China. These data show that the daytime convective boundary layer and night time stable boundary layer in this area extend to higher altitudes than in other areas. In the night time, the stable boundary layer exceeds 900 m in altitude and can sometimes peak at 1750 m, above which the residual layer may reach up to about 4000 m. The daytime convective boundary layer develops rapidly after entering the residual layer, and exceeds 4000 m in thickness. The results show that the deep convective boundary layer in the daytime is a pre-requisite for maintaining the deep residual mixed layer in the night time. Meanwhile, the deep residual mixed layer in the night time provides favorable thermal conditions for the development of the convective boundary layer in the daytime. The prolonged periods of clear weather that often occurs in this area allow the cumulative effect of the atmospheric residual layer to develop fully, which creates thermal conditions beneficial for the growth of the daytime convective boundary layer. At the same time, the land surface process and atmospheric motion within the surface layer in this area also provide helpful support for forming the particular structure of the thermal ABL. High surface temperature is clearly the powerful external thermal forcing for the deep convective boundary layer. Strong sensible heat flux in the surface layer provides the required energy. Highly convective atmosphere and strong turbulence provide the necessary dynamic conditions, and the accumulative effect of the residual layer provides a favorable thermal environment. 展开更多
关键词 arid region in Northwest China clear days in summer atmospheric boundary layer depth vertical structure land surface process
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Impacts of Atmospheric Boundary Layer Vertical Structure on Haze Pollution Observed by Tethered Balloon and Lidar 被引量:1
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作者 Haijiong SUN Yu SHI +3 位作者 Lei LIU Weichen DING Zhe ZHANG Fei HU 《Journal of Meteorological Research》 SCIE CSCD 2021年第1期209-223,共15页
In this paper, the characteristics of the atmospheric boundary layer(ABL) vertical structure over the North China Plain(NCP) during a comprehensive observation experiment conducted during 15–21 December 2018 were inv... In this paper, the characteristics of the atmospheric boundary layer(ABL) vertical structure over the North China Plain(NCP) during a comprehensive observation experiment conducted during 15–21 December 2018 were investigated. Observational data were obtained with a large tethered balloon, Doppler wind lidar, and ground-level instruments. The maximum concentration of PM_(2.5) exceeded 200 μg m^(-3), and the ratio of PM_(2.5)/PM_(10) was approximately 0.4(its maxi-mum was approximately 0.8) during the whole observation period, indicating the explosive growth of dominant fine-mode aerosols in the winter heating season. Elevated concentrations of pollutants decreased the solar irradiance received by the ground, resulting in lower temperature at ground level. Our results illustrate three distinct types of vertical profiles: Type 1(convective state)—the concentration of PM_(2.5) decreased nearly linearly with increase of the height below approximately 600 m;Type 2(stable state)—the PM_(2.5) concentration sharply decreased from the ground to approximately 200 m;and Type 3(multilayer structure)—some pollutants were suspended aloft in the upper air layer. Diurnal evolution of the vertical profiles of PM_(2.5) and their relationship with the changes in meteorological factors were identified. From daytime to nighttime, the vertical profiles evolved from Type 1 to Type 2 or Type 3. All the 33 vertical PM_(2.5) profiles that we obtained showed a strong relationship with elements of the ABL structure, such as the distributions of winds, the inversion layer, and turbulence activities. A light-wind layer and weak turbulence activity, especially within the inversion layer, contributed greatly to the accumulation of pollutants.Vertical PM_(2.5) concentration patterns were also greatly affected by local ground-level emission sources and regional transport processes. 展开更多
关键词 HAZE POLLUTION PM_(2.5) vertical structure INVERSION atmospheric boundary layer(ABL)
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An analysis and enhanced proposal of atmospheric boundary layer wind modelling techniques for automation of air traffic management
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作者 Jesus GONZALO Diego DOMINGUEZ +1 位作者 Deibi LOPEZ Adrian GARCIA-GUTIERREZ 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2021年第5期129-144,共16页
The air traffic management automation imposes stringent requirements on the weather models,in such a way that they should be able to provide reliable short-time forecasts in digital formats in almost real time.The atm... The air traffic management automation imposes stringent requirements on the weather models,in such a way that they should be able to provide reliable short-time forecasts in digital formats in almost real time.The atmospheric boundary layer is one of the regions where aircraft operation and coordination are critical and therefore atmospheric model performance is also vital.This paper presents conventional and innovative techniques to improve the accuracy in the forecasting of winds in the lower atmospheric layer,proposing mechanisms to develop better models including deterministic and stochastic simulations.Accuracy is improved by optimizing the grid,assimilating observations in cycling simulations and managing a number of ensemble members.An operationdriven post-processing stage helps to incorporate detailed terrain definitions and real-time observations without re-running the model.The improvements are checked against mesoscale weather simulations at different scales and a dedicated flight campaign.The results show good performance of the model without sensitively increasing the required throughput. 展开更多
关键词 Air traffic automation atmospheric boundary layer(ABL) Aviation weather Data assimilation Wind forecasting
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DOPPLER SODAR AND ATMOSPHERIC BOUNDARY LAYER DETECTION
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作者 周明煜 陈景南 +3 位作者 李诗明 郑月明 苏立荣 吕乃平 《Acta meteorologica Sinica》 SCIE 1991年第3期331-341,共11页
A Doppler sodar system controlled by microcomputer is described in this paper. The sodar was used to detect the vertical distribution of wind and temperature stratification in the atmospheric boundary layer. The detec... A Doppler sodar system controlled by microcomputer is described in this paper. The sodar was used to detect the vertical distribution of wind and temperature stratification in the atmospheric boundary layer. The detecting results show that at night the vertical distribution of wind is very complicated, which can appear as a structure of two or three layers. In nocturnal atmospheric boundary layer sometimes there exists very thin layer in multi-layer inversion and it can be retained for a long time. 展开更多
关键词 Doppler sodar atmospheric boundary layer wind measurement multi-layer inversion
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The concentration and distribution of dimethyl sulfide in the marine atmospheric boundary layer near the equator
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作者 Li Xingsheng Li Zhe F. Parungo and C. Nagamoto ( Chinese Academy of Meteorological Science, State Meteorological Administration, Beijing, China)(NOAA/ERL, Air Resources Laboratory, Boulder, CO 80303, U. S. A.) 《Acta Oceanologica Sinica》 SCIE CAS CSCD 1995年第3期355-369,共15页
A one-dimensional photochemical model with parameterized vertical eddy diffusion is used to simulate the dimethyl sulfide (DMS) in the marine atmospheric boundary layer near the equator. The boundary condition of theD... A one-dimensional photochemical model with parameterized vertical eddy diffusion is used to simulate the dimethyl sulfide (DMS) in the marine atmospheric boundary layer near the equator. The boundary condition of theDMS flux over sea surface is assigned from gas exchange models that deped on sea surface wind speed and DMS concentration in surface water. Photolysis rates at various altitudes are calculated as a function of Solar zenith angle, andthe radiation calculation includes ozone absorption,surface reflection and molecular scattering.The simulated results of the DMS diurnal cycle are in good agreement with the observations. Sensitivity tests ofthe model indicate that the concentration of the DMS in the marine surface layer appears to be affected by a combination of chemical processes and meteorological conditions. In addition, photochemical processes are rather important.The reaction of the DMS with OH radical, the heterogeneous conversion of SO2 and the deposition of NSS-SO andthe methanesulfonic acid (MSA) are critical factors of controlling the DMS, SO2, NSS-SO and the MSA concentrations and distributions in the atmosphere.The DMS concentration in air is directly proportional to surface windspeed, but it is inversely proportional to boundary layer height in the convective boundary layer. The distributions ofthe DMS concentrations in air are strongly influenced by atmospheric stratification in stable conditions. 展开更多
关键词 Dimethyl sulfide marine atmospheric boundary layer EQUATOR
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SENSITIVITY TESTS OF INTERACTION BETWEEN LAND SURFACE PHYSICAL PROCESS AND ATMOSPHERIC BOUNDARY LAYER 被引量:4
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作者 刘树华 文平辉 +3 位作者 张云雁 洪钟祥 胡非 刘辉志 《Acta meteorologica Sinica》 SCIE 2002年第4期451-469,共19页
In this paper,an interactive model between land surface physical process and atmosphere boundary layer is established,and is used to simulate the features of soil environmental physics, surface heat fluxes,evaporation... In this paper,an interactive model between land surface physical process and atmosphere boundary layer is established,and is used to simulate the features of soil environmental physics, surface heat fluxes,evaporation from soil and evapotranspiration from vegetation and structures of atmosphere boundary layer over grassland underlying.The sensitivity experiments are engaged in primary physics parameters.The results show that this model can obtain reasonable simulation for diurnal variations of heat balance,soil volumetric water content,resistance of vegetation evaporation,flux of surface moisture,and profiles of turbulent exchange coefficient,turbulent momentum,potential temperature,and specific humidity.The model developed can be used to study the interaction between land surface processes and atmospheric boundary layer in city regions,and can also be used in the simulation of regional climate incorporating a mesoscale model. 展开更多
关键词 surface process parameterized soil environmental physics surface heat fluxes atmosphere boundary layer structure
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Transport of particles in an atmospheric turbulent boundary layer 被引量:1
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作者 Xiongping Luo Shiyi Chen 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2005年第3期235-242,共8页
A program incorporating the parallel code of large eddy simulation (LES) and particle transportation model is developed to simulate the motion of particles in an atmospheric turbulent boundary layer (ATBL). A mode... A program incorporating the parallel code of large eddy simulation (LES) and particle transportation model is developed to simulate the motion of particles in an atmospheric turbulent boundary layer (ATBL). A model of particles of 100-micrometer order coupling with large scale ATBL is proposed. Two typical cases are studied, one focuses on the evolution of particle profile in the ATBL and the landing displacement of particles, whereas the other on the motion of particle stream. 展开更多
关键词 Transport of particles Large eddy simulation atmospheric turbulent boundary layer
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Effects of Turbulent Dispersion of Atmospheric Balance Motions of Planetary Boundary Layer 被引量:1
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作者 刘式适 黄伟 荣平平 《Advances in Atmospheric Sciences》 SCIE CAS CSCD 1992年第2期147-156,共10页
New Reynolds' mean momentum equations including both turbulent viscosity and dispersion are used to analyze atmospheric balance motions of the planetary boundary layer. It is pointed out that turbulent dispersion ... New Reynolds' mean momentum equations including both turbulent viscosity and dispersion are used to analyze atmospheric balance motions of the planetary boundary layer. It is pointed out that turbulent dispersion with r 0 will increase depth of Ekman layer, reduce wind velocity in Ekman layer and produce a more satisfactory Ekman spiral lines fit the observed wind hodograph. The wind profile in the surface layer including tur-bulent dispersion is still logarithmic but the von Karman constant k is replaced by k1 = 1 -2/k, the wind increasesa little more rapidly with height. 展开更多
关键词 Effects of Turbulent Dispersion of atmospheric Balance Motions of Planetary boundary layer
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Analysis of atmospheric boundary ozone profiles in winter in hinterland of Taklimakan Desert
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作者 Qing He XingHua Yang +2 位作者 Ali Mamtimin Wen Huo Qiang Liu 《Research in Cold and Arid Regions》 2011年第4期358-365,共8页
In order to reveal the variation characteristics of ozone (03) concentration in the atmosphere boundary layer over a desert in winter, an observation experiment was carried out in the Tazhong area by means of a teth... In order to reveal the variation characteristics of ozone (03) concentration in the atmosphere boundary layer over a desert in winter, an observation experiment was carried out in the Tazhong area by means of a tethered balloon during January 18-25, 2008. The vertical distribution of O3 concentration and its correlation with temperature and humidity were analyzed based on experimental observation data and related data. Results show that: (1) The concentration of O3 mainly ranges from 10 to 50 μg/L, with a maximum of 56.1 μg/L, minimum of 2.6 μg/L, and a daily average concentration of 34.4 μg/L. (2) O3 profiles can be divided into three types: peak, uniform, and growth, where uniform accounts for the majority. (3) Temperature and moisture are influential on O3 concentrations in atmospheric boundary layer. Temperature inversion and water vapor increase in an atmospheric boundary layer leads to a decrease of O3. (4) O3 concentration has an obvious daily change in Tazhong. It is lower at night, begins to increase after sunrise, and reaches a maximum at noon. The maximum appears at 17:00 BJT (Beijing Time), and the minimum appears at 08:00 BJT. 展开更多
关键词 atmospheric boundary layer ozone profiles Taklimakan Desert
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