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| 1 | Beyond hypoxia: Occurrence and characteristics of black blooms due to the decomposition of the submerged plant Potamogeton crispus in a shallow lake显示文摘Organic matter-induced black blooms(hypoxia and an offensive odor) are a serious ecosystem disasters that have occurred in some large eutrophic shallow lakes in China. In this study, we investigated two separate black blooms that were induced by Potamogeton crispus in Lake Taihu, China. The main physical and chemical characteristics, including color- and odor-related substances, of the black blooms were analyzed. The black blooms were characterized by low dissolved oxygen concentration(close to 0 mg/L), low oxidation-reduction potential, and relatively low pH of overlying water. Notably higher Fe2+and∑S2-were found in the black-bloom waters than in waters not affected by black blooms. The black color of the water may be attributable to the high concentration of these elements, as black FeS was considered to be the main substance causing the black color of blooms in freshwater lakes. Volatile organic sulfur compounds, including dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide, were very abundant in the black-bloom waters. The massive anoxic degradation of dead Potamogeton crispus plants released dimethyl sulfide, dimethyl disulfide, and dimethyl trisulfide, which were the main odor-causing compounds in the black blooms. The black blooms also induced an increase in ammonium nitrogen and soluble reactive phosphorus levels in the overlying waters. This extreme phenomenon not only heavily influenced the original lake ecosystem but also greatly changed the cycling of Fe, S, and nutrients in the water column. | Qiushi Shen Qilin Zhou Jingge Shang Shiguang Shao Lei Zhang Chengxin Fan | 2014 | Journal of Environmental Sciences2014，26，2： | 33 |
| 2 | Analysis of observations on the urban surface energy balance in Beijing显示文摘1 年(20092010 ) 大小从在一个 325-m 塔的三垂直的层位于闹市区北京的传感器获得的城市的表面精力平衡(SEB ) 被分析。结果显示出那:(1 ) 从 325-m 塔的大小代表位于半潮湿的温暖适度的大陆人季风气候地区的城市的 SEB 特征。在典型热、多雨的夏天,感冒和干燥冬季,测量鲍恩比率在冬季在夏天和最大值是最小的。在 140 m 测量春天,夏天,秋天,和冬季的鲍恩比率分别地是 2.86, 0.82, 1.17,和 4.16。(2 ) 在 140-m 的高度(在经常的流动层) ,中午反照率是 0.10 夏天, 0.12 为春天和秋天,并且 0.14 为冬季。白天的比率理智的热流动,潜伏的热流动,和捕捞放射的存储热流动是 0.25, 0.16,和 0.59 清楚天空的天,并且 0.33, 0.19,和 0.48 为多云的天分别地。(3 ) 在清楚天空的天下面,夜间理智的热流动是几乎零,但是潜伏的热流动比零大。为多云的天,夜间理智的热流动比在冬季的潜伏的热流动稍微大。向上的热流动是的夜间大概由于人为的版本(为夏天的主要潜伏的热,当时为冬季的潜伏、理智的热) 。 | MIAO ShiGuang DOU JunXia CHEN Fei LI Ju LI AiGuo | 2012 | Science China Earth Sciences2012，55，11： | 23 |
| 3 | Determination and geological significance of the eclogites from the northern Dabie Mountains, central China显示文摘Numerous eclogite_amphibolite blocks have been found along the Mayanling fault in the northern Dabie complex. Most of the eclogites are strongly retrograded and contain garnet, rutile and the amphibole_plagioclase symplectite. The occurrence of these eclogites may have something to do with the inverted movement of the Mayanling thrust fault. | Chunjing Wei Zhengang Shan Lifei Zhang Shiguang Wang Zongguang Chang | 1998 | Chinese Science Bulletin1998，43，3： | 18 |
| 4 | VIPLFaceNet: an open source deep face recognition SDK显示文摘 | Xin LIU Meina KAN Wanglong WU Shiguang SHAN Xilin CHEN | 2017 | Frontiers of Computer Science2017，11，2： | 15 |
| 5 | Research and application on the technology system of multi-scale assessment of the impact on the atmospheric environment by urban planning显示文摘Improvement of the atmospheric environment in urban planning is an important issue to implement the sustainable development of cities. In this paper, in order to meet the demand of planning office to compare and assess quantitatively of the designs in multi-scale, based on geographical information system (GIS) data with high resolution, a multi-scale numerical modeling system for the atmospheric environment impact of urban planning is set up, and the multi-scale assessment index system is established, which compose the technology system of multi-scale assessment of the impact on the atmospheric environment by urban planning. In urban planning (urban development of Beijing) and optimizing layouts of Olympic Green, it has been applied to quantitatively evaluating the impact on atmospheric environment by urban planning before construction, which offers scientific foundation to optimize the whole and local urban layout. | WANG Guangtao, WANG Xiaoyun, MIAO Shiguang, JIANG Weimei, GUO Wenli, JI Chongping & CHEN Xianyan School of Architecture, Tsinghua University, Beijing 100084, China Ministry of Construction of China, Beijing 100044, China Beijing Meteorological Bureau, Beijing 100089, China Institute of Urban Meteorology, China Meteorological Administration, Beijing 100089, China Department of Atmospheric Sciences, Nanjing University, Nanjing 210093, China | 2005 | Science China Earth Sciences2005，48，z2： | 11 |
| 6 | Discovery of mantle and lower crust xenoliths from early Cretaceous volcanic rocks of southwestern Tianshan,Xinjiang显示文摘In Tuoyun area of southwestern Tianshan, mantle and lower crust xenoliths are present In the volcanic rocks with ages of 101-123 Ma. Mantle xenoliths include mineral megacrysts such as kaersutite and pargasite, feldspar, biotite, and rare pyroxene and rock fragments such as perodotite, pyroxenite, amphibolite, and rare glimmerite. Lower crust xenoliths are mainly banded and massive granulite. The volcanic rocks were produced by within-plate magmatism. Occurrence of hydrous and volatile mineral megacrysts, amphibolite, and some pyroxenite containing hydrous and volatile minerals indicates that mantle metasomatism was intense. Undoubtedly, this discovery is very important to understanding of the crust-mantle structure and geodynamic background in depth in southwestern Tianshan and geological correlation with adjacent regions. | Baofu Han Xuechao Wang Guoqi He Tairan Wu Maosong Li Yulin Liu Shiguang Wang | 1999 | Chinese Science Bulletin1999，44，12： | 11 |
| 7 | COMPASS time synchronization and dissemination—Toward centimetre positioning accuracy显示文摘In this paper we investigate methods to achieve highly accurate time synchronization among the satellites of the COMPASS global navigation satellite system(GNSS).Owing to the special design of COMPASS which implements several geo-stationary satellites(GEO),time synchronization can be highly accurate via microwave links between ground stations to the GEO satellites.Serving as space-borne relay stations,the GEO satellites can further disseminate time and frequency signals to other satellites such as the inclined geo-synchronous(IGSO)and mid-earth orbit(MEO)satellites within the system.It is shown that,because of the accuracy in clock synchronization,the theoretical accuracy of COMPASS positioning and navigation will surpass that of the GPS.In addition,the COMPASS system can function with its entire positioning,navigation,and time-dissemination services even without the ground link,thus making it much more robust and secure.We further show that time dissemination using the COMPASS-GEO satellites to earth-fixed stations can achieve very high accuracy,to reach 100 ps in time dissemination and 3 cm in positioning accuracy,respectively.In this paper,we also analyze two feasible synchronization plans.All special and general relativistic effects related to COMPASS clocks frequency and time shifts are given.We conclude that COMPASS can reach centimeter-level positioning accuracy and discuss potential applications. | WANG ZhengBo ZHAO Lu WANG ShiGuang ZHANG JianWei WANG Bo WANG LiJun | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，9： | 9 |
| 8 | Hepatic immune tolerance induced by hepatic stellate cells显示文摘The liver, which is a metabolic organ, plays a pivotal role in tolerance induction. Hepatic stellate cells(Hp SCs), which are unique non-parenchymal cells, exert potent immunoregulatory activity during cotransplantation with allogeneic islets effectively protecting the islet allografts from rejection. Multiple mechanisms participate in the immune tolerance induced by Hp SCs, including the marked expansion of myeloid-derived suppressor cells(MDSCs), attenuation of effector T cell functions and augmentation of regulatory T cells. Hp SC conditioned MDSC-based immunotherapy has been conducted in mice with autoimmune disease and the results show that this technique may be promising. This article demonstrates how Hp SCs orchestrate both innate immunity and adaptive immunity to build a negative network that leads to immune tolerance. | Ching-Chuan Hsieh Chien-Hui Hung Lina Lu Shiguang Qian | 2015 | World Journal of Gastroenterology2015，21，42： | 8 |
| 9 | Contrasting Characteristics of the Surface Energy Balance between the Urban and Rural Areas of Beijing显示文摘A direct comparison of urban and rural surface energy balances, as well as a variety of other variables including incoming shortwave/longwave radiation and aerosol optical depth, is conducted for the Beijing metropolitan area. The results indicate that, overall, the urban area receives a smaller amount of incoming shortwave radiation but a larger amount of incoming longwave radiation. However, comparisons in the aerosol optical depth and cloud fraction at the two locations suggest that neither aerosol optical depth nor cloud fraction alone can explain the difference in the incoming shortwave radiation. The urban–rural differences in the incoming longwave radiation are unlikely to be caused by the presence of more abundant greenhouse gases over the urban area, as suggested by some previous studies, given that water vapor is the most dominant greenhouse gas and precipitable water is found to be less in urban areas. The higher incoming longwave radiation observed over the urban area is mostly likely due to the higher temperatures of the ambient air. The urban area is also found to always produce higher sensible heat fluxes and lower latent heat fluxes in the growing season. Furthermore, the urban area is associated with a larger amount of available energy(the sum of sensible and latent heat fluxes) than the rural area, except in May and October when evapotranspiration in the rural area significantly exceeds that in the urban area. This study provides observational evidence of urban–rural contrasts in relevant energy-balance components that plausibly arise from urban–rural differences in atmospheric and land-surface conditions. | WANG Linlin GAO Zhiqiu MIAO Shiguang GUO Xiaofeng SUN Ting Maofeng LIU Dan LI | 2015 | Advances in Atmospheric Sciences2015，32，4： | 7 |
| 10 | Tim-3 promotes cell aggressiveness and paclitaxel resistance through NF-κB/STAT3 signalling pathway in breast cancer cells显示文摘Objective:Although T-cell immunoglobulin and mucin-domain containing molecule-3(Tim-3)has been recognized as a promising target for cancer immunotherapy,its exact role in breast cancer has not been fully elucidated.Methods:Tim-3 gene expression in breast cancer and its prognostic significance were analyzed.Associated mechanisms were then explored in vitro by establishing Tim-3-overexpressing breast cancer cells.Results:In a pooled analysis of The Cancer Genome Atlas(TCGA)database,Tim-3 gene expression levels were significantly higher(P<0.001)in breast cancer tissue,compared with normal tissues.Tim-3 was a prognosis indicator in breast cancer patients[relapse-free survival(RFS),P=0.004;overall survival(OS),P=0.099].Tim-3 overexpression in Tim-3 low breast cancer cells promoted aggressiveness of breast cancer cells,as evidenced by enhanced proliferation,migration,invasion,tight junction deterioration and tumor-associated tubal formation.Tim-3 also enhanced cellular resistance to paclitaxel.Furthermore,Tim-3 exerted its function by activating the NF-κB/STAT3 signalling pathway and by regulating gene expression[cyclin D1(CCND1),C-Myc,matrix metalloproteinase-1(MMP1),TWIST,vascular endothelial growth factor(VEGF)upregulation,concomitant with Ecadherin downregulation).Lastly,Tim-3 downregulated tight junction-associated molecules zona occludens(ZO)-2,ZO-1 and occludin,which may further facilitate tumor progression.Conclusions:Tim-3 plays an oncogenic role in breast cancer and may represent a potential target for antitumor therapy. | Yizi Cong Yuxin Cui Shiguang Zhu Jianqiao Cao Haidong Zou Tracey AMartin Guangdong Qiao Wenguo Jiang Zhigang Yu | 2020 | Chinese Journal of Cancer Research2020，32，5： | 7 |
| 11 | Distribution of sand dunes and sand shifts along the southern fringe of the Mu Us Desert since the Ming Dynasty显示文摘This article takes the two segments of the Ming Great Walls,Dabian and Erbian,and their associated barracks and forts as geographical references. Based on a detailed scrutiny of historical records of the Ming and Qing dynasties,and on field surveys,the southern boundaries of the sand dunes and sand shifts of the Mu Us Desert in the Ming and Qing dynasties are carefully reconstructed. A comparison of the southern boundaries of the sand dunes and sand shifts of the Mu Us Desert in Ming and Qing with the modern boundary revealed in remote sensing imagery clearly shows that the southern boundary of dunes and shifts in the Mu us Desert has expanded only in a few areas and on a small scale. In the area to the south of Changle Fort,along the direction of annually prevailing winds,sand drifts have pene-trated through the Jialu River valley into the loess region and have formed a sand strip of 32 km long and 3 km wide. To the east of Qingping Fort,sand drifts penetrated toward the eastern loess region through the Luhe River valley and have formed another sand strip of 8 km long and 2 km wide. Gener-ally speaking,though the intensity of human activity has been increasing in this area since the Ming Dynasty,the Mu Us Desert has not significantly expanded toward the southeast or southwest. The sand-loess boundary in the southern fringe of the Mu Us Desert has been almost unchanged since the Ming Dynasty. | DENG Hui SHU ShiGuang SONG YuQin XING FuLai | 2007 | Chinese Science Bulletin2007，52，22： | 6 |
| 12 | 肝癌细胞裂解物致敏DC疫苗诱导的肿瘤特异抗瘤效应显示文摘目的 研究肝癌细胞裂解物致敏的树突状细胞 (DC)疫苗诱导的体内、外抗瘤效应。方法 体外实验 :将肿瘤细胞裂解物致敏的DC与T细胞共培养 ,4d后收获致敏的T细胞 ,观察其对野生型肿瘤细胞的杀伤反应并检测培养液中的IFN γ分泌情况。体内实验 :观察肿瘤细胞裂解物致敏的DC疫苗对小鼠皮下肝癌发生的抑制作用。结果 在效 :靶比分别为 5 0 .0∶1.0、2 5 .0∶1.0、12 .5∶1.0时 ,肝癌细胞裂解物致敏的DC组与DC组诱导的肿瘤杀伤活性分别为 (4 5 .7±3 .2 ) %对 (2 6.5± 2 .5 ) % ;(3 1.0± 2 .7) %对 (14 .3± 3 .3 ) % ;(2 7.8± 1.7) %对 (9.9± 0 .6) % (在各效靶比 ,P <0 .0 1) ,混合细胞培养上清液中IFN γ浓度则为 (2 60 3 .3± 2 60 .0 )ng/L对 (5 0 1.0±5 0 .0 )ng/L。在体内则可有效抑制小鼠皮下肝癌的发生。 | 邱双健 叶胜龙 汤钊猷 Shiguang Qian Lina Lu | 2003 | 中华实验外科杂志2003，20，9： | 6 |
| 13 | 乙型肝炎表面抗原作为肿瘤免疫攻击靶点的研究显示文摘目的 研究乙型肝炎表面抗原 (HBsAg)作为肿瘤相关抗原用于肿瘤免疫基因治疗的可能性。方法 以 1× 10 6的编码HBsAg的重组腺病毒载体转染的DC(DC HBsAg)、编码增强型绿色荧光蛋白的重组腺病毒载体转染的DC(DC EGFP)、DC以及等体积的 1×PBS静脉免疫B6小鼠 2次 ,每次间隔 1周。于最后一次免疫 1周后 ,每只小鼠皮下接种 7× 10 5B16 HBsAg或等量的B16黑色素瘤细胞。观察各免疫组小鼠皮下肿瘤的生长情况。同法以 1× 10 6的DC HBsAg和DC EGFP、1μg重组HBsAg以及等体积 1×PBS免疫B6小鼠 ,亦于最后一次免疫 1周后 ,处死部分小鼠 ,检测血清中anti HBsAg抗体滴度 ,其余小鼠皮下接种等量的B16 HBsAg ,观察肿瘤生长情况。结果 DC HBsAg疫苗可以诱导出明显强于重组HBsAg疫苗的HBsAg特异的抗瘤免疫 ,但其诱导的体液免疫水平则明显低于重组HBsAg免疫。结论 HBsAg可以作为肿瘤免疫攻击的有效靶点用于抗肿瘤免疫。 | 邱双健 叶胜龙 汤钊猷 Shiguang Qian Lina Lu | 2002 | 中华医学杂志2002，82，4： | 6 |
| 14 | Loss of Gn1a/OsCKX2 confers heavy-panicle rice with excellent lodging resistance显示文摘Significant achievements have been made in breeding programs for the heavy-panicle-type(HPT)rice(Oryza sativa) in Southwest China. The HPT varieties now exhibit excellent lodging resistance,allowing them to overcome the greater pressures caused by heavy panicles. However, the genetic mechanism of this lodging resistance remains elusive. Here, we isolated a major quantitative trait locus, Panicle Neck Diameter 1(PND1), andidentified the causal gene as GRAIN NUMBER 1 A/CYTOKININ OXIDASE 2(Gn1 A/Os CKX2). The null gn1 a allele from rice line R498(gn1 aR498) improved lodging resistance through increasing the culm diameter and promoting crown root development.Loss-of-function of Gn1 a/Os CKX2 led to cytokinin accumulation in the crown root tip and accelerated the development of adventitious roots. Gene pyramiding between the null gn1 aR498 allele with two gain-of-function alleles, STRONG CULM 2(SCM2)and SCM3, further improved lodging resistance.Moreover, Gn1 a/Os CKX2 had minimal influence on overall rice quality. Our research thus highlights the distinct genetic components of lodging resistance of HPT varieties and provides a strategy for tailormade crop improvement of both yield and lodging resistance in rice. | Bin Tu Zhang Tao Shiguang Wang Lei Zhou Ling Zheng Chun Zhang Xinzi Li Xiaoyu Zhang Junjie Yin Xiaobo Zhu Hua Yuan Ting Li Weilan Chen Peng Qin Bingtian Ma Yuping Wang Shigui Li | 2022 | Journal of Integrative Plant Biology2022，64，1： | 5 |
| 15 | Safety profile of two-dimensional Pd nanosheets for photothermal therapy and photoacoustic imaging显示文摘二维(2D ) nanosheets 在 biomedicines 的领域里与大潜力作为 nanomaterial 的一个重要的类出现了,特别地在癌症 theranostics。然而,由于综合的有效方法的缺乏有控制尺寸的一致 2D nanomaterials, 2D nanomaterials 的尺寸依赖者简历行为的系统的评估很少被报导。就我们的知识而言,我们是第一报导对他们的简历行为的 2D nanomaterials 的尺寸的影响的系统的评估。有从 5 ~ 80 nm 的直径的 2D Pd nanosheets 被综合并且在房间和动物模型测试了估计他们基因表示介绍的尺寸依赖者 bioapplication, biodistribution,消除,毒性,和 genomic。我们的结果证明尺寸显著地影响 Pd nanosheets 的生物行为,包括他们的 photothermal 和 photoacoustic 效果, pharmacokinetics,和毒性。比作大尺寸的 Pd nanosheets,更展出的小尺寸的 Pd nanosheets 在 ultralow 之上预付 photoacoustic 成像和 photothermal 效果激光照耀。而且,在 vivo,结果显示 5-nm Pd nanosheets 与更长的血半衰期逃离网状内皮组织的系统并且能被肾的排泄清除,当时有更大的尺寸的 Pd nanosheets 主要在肝和怒气积累。30-nm Pd nanosheets 展出了最高的肿瘤累积。尽管 Pd nanosheets 没在细胞的水平引起任何可估计的毒性,我们在怒气在肝和发炎观察了细微类脂化合物累积。Genomic 基因表达式分析证明 80-nm Pd nanosheets 与更细胞的部件交往了并且在肝影响了更生物的进程,作为与 5-nm Pd nanosheets 相比。我们相信这个工作将作为 nanomedicines 提供珍贵信息和卓见进 2D Pd nanosheets 的临床的申请。 | Mei Chen Shuzhen Chen Chengyong He Shiguang Mo Xiaoyong Wang Gang Liu Nanfeng Zheng | 2017 | Nano Research2017，10，4： | 5 |
| 16 | Numerical simulation of the influence of aerosol radiation effect on urban boundary layer显示文摘With the intensification of pollution and urbanization, the aerosol radiation effect continues to play an important role in the urban boundary layer. In this paper, a winter pollution process in Beijing has been taken as an example, and a new aerosol vertical profile in the radiative parameterization scheme within the Weather Forecast Research and Forecasting(WRF) model has been updated to study the effect of aerosols on radiation and the boundary layer. Furthermore, the interactions among aerosols,urbanization, and planetary boundary layer(PBL) meteorology were discussed through a series of numerical experiments. The results show the following:(1) The optimization improves the performance of the model in simulating the distribution features of air temperature, humidity, and wind in Beijing.(2) The aerosols reduce the surface temperature by reducing solar radiation and increasing the temperature in the upper layer by absorbing or backscattering solar radiation. The changes in the PBL temperature lead to more stable atmospheric stratification, reducing the energy transfer from the surface and the height of the boundary layer.(3) With the increase in the aerosol optical depth, the atmospheric stratification most likely becomes stable over rural areas, most likely becomes stable over suburb areas, and has great difficultly becoming stable over urban areas. Aerosol radiative forcing,underlying urban surfaces, and the interaction between them are the main factors that affect the changes in the meteorological elements in the PBL. | Xinran WANG Xiaodong HE Shiguang MIAO Youjun DOU | 2018 | Science China Earth Sciences2018，61，12： | 4 |
| 17 | Enhanced modeling of latent heat flux from urban surfaces in the Noah/single-layer urban canopy coupled model显示文摘The numerical modeling of the impacts of urban buildings in mesoscale meteorological models has gradually improved in recent years. Correctly representing the latent heat flux from urban surfaces is a key issue in urban land-atmosphere coupling studies but is a common weakness in current urban canopy models. Using the surface energy balance data at a height of 140 m from a 325 m meteorological tower in Beijing, we conducted a 1-year continuous off-line simulation by using a coupled land surface model and a single-layer urban canopy model and found that this model has a relatively large systematic error for simulated latent heat flux. To improve the numerical method for modeling latent heat flux from urban surfaces, we combined observational analysis and urban land surface model to derive an oasis effect coefficient for urban green areas; to develop a temporal variation formula for water availability in urban impervious surfaces; and to specify a diurnal profile and the maximum values of anthropogenic latent heat release for four seasons. These results are directly incorporated into the urban land surface model to improve model performance. In addition, this method serves as a reference for studies in other urban areas. | MIAO ShiGuang CHEN Fei | 2014 | Science China Earth Sciences2014，57，10： | 4 |
| 18 | Characteristics and geological significance of the eclogites from the Tongbai Mountains, Henan Province显示文摘Some eclogites and the related high-P metamorphic belt have been found for the first time from the Tongbai Mountains, Henan Province, where the eclogites and their probable retrogressive products —— garnet amphibolites —— occur as lenses in mica-schists. The fresheclogites comprise garnet, omphacite, quartz, rutile, phengite, barroisite, etc. The composi- | Chunjing Wei Yuxin Wu Yunyan Ni Bin Chen Shiguang Wang | 1999 | Chinese Science Bulletin1999，44，22： | 4 |
| 19 | Localization and validation of an urbanized high-resolution land data assimilation system(u-HRLDAS)显示文摘This paper uses an urbanized high-resolution land data assimilation system(u-HRLDAS) to parameterize the urban land surface characteristics.The u-HRLDAS model is localized and developed in order to satisfy the need of the weather forecast in Beijing,China.The remote sensing data used to localize and drive u-HRLDAS include the soil type data and MODIS retrieved leaf area index(LAI) data.The evaporation and water depth for impervious surface in urban area are developed to improve the simulation of u-HRLDAS.The result of the urban weather forecast is used for the comparison based on the rapid update cycle system at Beijing Meteorological Bureau(BJ-RUC) without coupled with u-HRLDAS.The land surface temperature,land surface fluxes,and first layer soil moisture in several single sites and urban Beijing region by BJ-RUC are compared with u-HRLDAS after localization and development.The off-line simulation results indicate that compared with BJ-RUC,after the localization and development,u-HRLDAS can improve the simulation of land surface parameters and fluxes definitely. | MENG ChunLei ZHANG ChaoLin MIAO ShiGuang CHEN Fei | 2013 | Science China Earth Sciences2013，56，6： | 4 |
| 20 | A Microscale Model for Air Pollutant Dispersion Simulation in Urban Areas: Presentation of the Model and Performance over a Single Building显示文摘A microscale air pollutant dispersion model system is developed for emergency response purposes. The model includes a diagnostic wind field model to simulate the wind field and a random-walk air pollutant dispersion model to simulate the pollutant concentration through consideration of the influence of urban buildings. Numerical experiments are designed to evaluate the model's performance, using CEDVAL(Compilation of Experimental Data for Validation of Microscale Dispersion Models) wind tunnel experiment data, including wind fields and air pollutant dispersion around a single building. The results show that the wind model can reproduce the vortexes triggered by urban buildings and the dispersion model simulates the pollutant concentration around buildings well. Typically, the simulation errors come from the determination of the key zones around a building or building cluster. This model has the potential for multiple applications; for example, the prediction of air pollutant dispersion and the evaluation of environmental impacts in emergency situations; urban planning scenarios;and the assessment of microscale air quality in urban areas. | Ning ZHANG Yunsong DU Shiguang MIAO | 2016 | Advances in Atmospheric Sciences2016，33，2： | 3 |
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