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Daily Changes of Spatial Patterns of Meteorological Elements over Pearl River Delta Based on GIS and MM5

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Chinese Geographical Science 2009年第1期19卷 69-76页

作者： JIANG Xueding XIA Beicheng lin Guangfa lin wenshi School of Environmental Sciences and Engineering SUN Yat-sen University Guangzhou 510275 China

The spatial distribution of meteorological elements is important for understanding the regional meteorology and climate changes. However, previous studies rarely focused on the daily changes of the spatial patterns of meteorological elements due to the limitation of remote sensing （RS） techniques and traditional meteorological methods. In this paper, the regional meteorological elements were simulated by the fifth-generation non-hydrostatic Mesoscale Model （MM5）, and the spatial patterns of meteorological elements and their diurnal variations were analyzed in landscape level over the Pearl （Zhujiang） River Delta （PRD）, China. The results showed that there were several centers of urban heat islands, cold islands, dry islands, wet islands, high wind over the PRD at noon. The diurnal changes of Moran I of meteorological elements were obvious and they reached the extremum at noon and 2-3 hours after the sunrise. The landscape indices of meteorological elements, such as area-weighted mean Fractal Dimension Index （FRAC_AM）, Landscape Shape lndex （LSI）, Shannon＇s Diversity Index （SHDI） and Contagion lndex （CONTAG）, were more variable at about the sunrise, noon and sunset. The occurrence of wave crests and vales of landscape indices was affected by the surface net radiation, turbulence and local circumfluence. The spatial patterns of meteorological elements correlated well with the land surface, thermal exchanges and local circumfluence. A new approach combining GIS, RS and numerical simulations technologies and the landscape ecology method was presented to analyze spatial patterns of meteorological elements, which may be useful for studying global and regional climate changes.

关键词： MM5 GIS/RS landscape ecology meteorological element Pearl (Zhujiang) River Delta

Sea-Salt Aerosol Effects on the Simulated Microphysics and Precipitation in a Tropical Cyclone

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Journal of Meteorological Research 2019年第1期33卷 115-125页

作者： Baolin JIANG wenshi lin Fangzhou LI Junwen CHEN School of Atmospheric Sciences and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat-Sen University

We investigate the effects of sea-salt aerosol(SSA) activated as cloud condensation nuclei on the microphysical processes, precipitation, and thermodynamics of a tropical cyclone(TC). The Weather Research and Forecasting model coupled with Chemistry(WRF-Chem) was used together with a parameterization of SSA production. Three simulations, with different levels of SSA emission(CTL, LOW, HIGH), were conducted. The simulation results show that SSA contributes to the processes of autoconversion of cloud water and accretion of cloud water by rain,thereby promoting rain formation. The latent heat release increases with SSA emission, slightly increasing horizontal wind speeds of the TC. The presence of SSA also regulates the thermodynamic structure and precipitation of the *** the HIGH simulation, higher latent heat release gives rise to stronger updrafts in the TC eyewall area, leading to enhanced precipitation. In the LOW simulation, due to decreased latent heat release, the temperature in the TC eye is lower, enhancing the downdrafts in the region; and because of conservation of mass, updrafts in the eyewall also strengthen slightly; as a result, precipitation in the LOW experiment is a little higher than that in the CTL ***, the relationship between the precipitation rate and SSA emission is nonlinear.

关键词： sea-salt aerosol microphysics tropical cyclone WRF-Chem cloud condensation nuclei

A numerical simulation of latent heating within Typhoon Molave

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Acta Oceanologica Sinica 2017年第7期36卷 39-47页

作者： LIU Yang lin wenshi LI Jiangnan WANG Gang YANG Song FENG Yerong School of Atmospheric Sciences Sun Yat-sen UniversityGuangzhou 510275China Meteorological Center of Middle South Regional Air Traffic Management Bureau of Civil Aviation of China Guangzhou 510470China Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction China Meteorological AdministrationGuangzhou 510080China

The weather research and forecasting（WRF） model is a new generation mesoscale numerical model with a fine grid resolution（2 km）, making it ideal to simulate the macro-and micro-physical processes and latent heating within Typhoon Molave（2009）. Simulations based on a single-moment, six-class microphysical scheme are shown to be reasonable, following verification of results for the typhoon track, wind intensity, precipitation pattern, as well as inner-core thermodynamic and dynamic structures. After calculating latent heating rate, it is concluded that the total latent heat is mainly derived from condensation below the zero degree isotherm, and from deposition above this isotherm. It is revealed that cloud microphysical processes related to graupel are the most important contributors to the total latent heat. Other important latent heat contributors in the simulated Typhoon Molave are condensation of cloud water, deposition of cloud ice, deposition of snow, initiation of cloud ice crystals, deposition of graupel, accretion of cloud water by graupel, evaporation of cloud water and rainwater,sublimation of snow, sublimation of graupel, melting of graupel, and sublimation of cloud ice. In essence, the simulated latent heat profile is similar to ones recorded by the Tropical Rainfall Measuring Mission, although specific values differ slightly.

关键词： latent heat weather research and forecasting model Typhoon Molave thermodynamic structure cloud microphysics zero degree isotherm

关于绿色低碳性能优化的中欧智慧建筑标准体系对比研究

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建筑科学 2022年第10期38卷 169-178页

作者：林文诗梁舒丹庄晖芸林琳连进遥孙嘉雪海南师范大学海南海口570203 海南省热带海岛地表过程与环境变化重点实验室海南海口570203 王颖院士团队创新中心海南海口570203 雅克设计有限公司海南海口570125

面向国家碳达峰、碳中和与绿色低碳经济体系建设的时代语境,本文针对建筑绿色低碳性能,研究了中国房地产业协会编制的T/CREA 002—2020《智慧建筑评价标准》、中国建筑节能协会编制的T/CABEE 002—2021《智慧建筑评价标准》、欧盟能源... 详细信息

面向国家碳达峰、碳中和与绿色低碳经济体系建设的时代语境,本文针对建筑绿色低碳性能,研究了中国房地产业协会编制的T/CREA 002—2020《智慧建筑评价标准》、中国建筑节能协会编制的T/CABEE 002—2021《智慧建筑评价标准》、欧盟能源效率证书补充标准(Smart Readiness Indicator,SRI)等中欧智慧建筑评价标准,深入探讨了绿色低碳相关推荐技术和条文,并以实例建筑项目作为算例对中欧标准进行了对比分析。结果表明:中欧智慧建筑技术市场发展水平不同;T/CABEE 002—2021参评门槛较高,不适用于评价智慧化程度较低建筑;T/CREA 002—2020标准贴合国内的智慧建筑技术,但采纳国际智慧技术不多;SRI推荐技术值得借鉴,但在中国的应用有待进一步本土化。另外,适当的技术组合能够有效提升能源效率和用户舒适度,对建筑绿色低碳性能的提高有很大潜力。

关键词：智慧建筑技术绿色低碳性能标准对比

华南珠三角地区海岸线和地形对暖区暴雨的影响

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中山大学学报（自然科学版）（中英文） 2022年第3期61卷 62-75页

作者：陈子健林文实蒋宝林曹琪敏沈晓钿南方海洋科学与工程广东省实验室(珠海) 广东珠海519082 中山大学大气科学学院/广东省气候变化与自然灾害研究重点实验室广东珠海519082 惠州学院地理与旅游学院广东惠州516007

通过使用WRF-Chem模式进行3个敏感性试验,研究东亚夏季风背景下,华南珠三角地区复杂的海岸线和沿岸众多低矮的山脉地形与暖区暴雨强度和分布之间的物理关联。通过动力以及水汽输送分析,发现当珠三角地区的低矮山脉地形移除后,山脉群对... 详细信息

通过使用WRF-Chem模式进行3个敏感性试验,研究东亚夏季风背景下,华南珠三角地区复杂的海岸线和沿岸众多低矮的山脉地形与暖区暴雨强度和分布之间的物理关联。通过动力以及水汽输送分析,发现当珠三角地区的低矮山脉地形移除后,山脉群对气流的地形抬升以及辐合作用消失,海岸线上的对流活动明显减少,925 hPa上水汽在海岸线上的积累减少,降雨区域向北移动约80 km,降水强度也减弱;当沿岸山脉地形移除,海岸线北移,喇叭口特殊地形消失后,原来海岸线上的海陆摩擦力差异消失,气流的辐合对流运动大幅减少,珠三角区域内几乎没有降水,取而代之的是在新的海岸线沿岸附近由于地形抬升作用以及下垫面摩檫力的差异,出现新的对流活动以及水汽的堆积,并且新海岸线上出现新的降水中心。因此珠三角区域内海岸线以及海岸山地是影响降水强度、分布和发生发展的重要因素。

关键词：暖区暴雨海岸线地形 WRF-Chem模式珠三角地区

A Case Modeling of Sea-Land Breeze in Macao and Its Neighborhood

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Advances in Atmospheric Sciences 2001年第6期18卷 1231-1240页

作者：林文实王安宇吴池胜冯瑞权古志明 Department of Atmospheric Sciences Zhongshan University Macao Meteorological and Geophysical Bureau Macao Department of Atmospheric Sciences Zhongshan University Macao Meteorological and Geophysical Bureau Macao

PSU / NCAR MM5 was utilized to simulate the sea-land breeze circulation in Macao and the three-dimensional flow around the Pearl River estuary. Four two-way nested grids having resolution of 1, 3, 9, and 27 km were included in the simulation. It was initialized with conventional observational data, and a 30 h simulation and analysis of one sea-land breeze case were performed. It was shown, that the model with a finer resolution (1 km) captures the sea breeze and land breeze in Macao with reasonable skill. The sea breeze front and the thermal internal boundary layer (TIBL) were also obviously revealed. However, the coarser horizontal resolution (3 km) could capture the sea breeze but not the land breeze.

关键词： sea-land breeze simulation resolution

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海盐核对华南沿海一次暖区暴雨的影响

中山大学学报（自然科学版）（中英文） 2023年第2期62卷 123-136页

作者：罗青陈子健林文实蒋宝林曹琪敏李芳洲中山大学大气科学学院/广东省气候变化与自然灾害研究重点实验室广东珠海519082 南方海洋科学与工程广东省实验室(珠海) 广东珠海519082 惠州学院地理与旅游学院广东惠州516007

采用中尺度数值天气模式WRF-Chem 4.1.2,模拟了2014年在华南沿海地区发生的一次暖区强降水事件。通过进行3个不同海盐核排放强度(CTL,LOW,HIGH)试验,从降水落区、水成物分布、微物理过程以及潜热释放方面,探讨了海盐气溶胶浓度对暖区暴... 详细信息

采用中尺度数值天气模式WRF-Chem 4.1.2,模拟了2014年在华南沿海地区发生的一次暖区强降水事件。通过进行3个不同海盐核排放强度(CTL,LOW,HIGH)试验,从降水落区、水成物分布、微物理过程以及潜热释放方面,探讨了海盐气溶胶浓度对暖区暴雨的影响。研究结果表明,海盐核浓度对降水落区有一定的影响,低海盐核排放下的降水区域更分散,而高海盐核排放下的降水区域更集中。低(高)海盐核排放情况下,降水中的云凝结核浓度减少(增加)、雨水和霰的混合比增加(减少)、云微物理过程尤其是云水自动转化成雨水及云水被雨水收集过程增强(减弱)、潜热释放增加(减小)以及上升运动增强(减弱),导致累计降水增多(减小)及降雨率增大(减小)。

关键词：海盐核暖区暴雨微物理效应 WRF-Chem模式

Numerical prediction experiment on Typhoon Maggie (9903)

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Acta Oceanologica Sinica 2001年第2期20卷 171-182页

作者： Fong Soi Kun, Wu Chisheng, Hao I Pan, Lam Kin Hang Ku Chi Meng, Wang Anyu, lin wenshi (1. Macao Meteorological and Geophysical Bureau, Macao, China 2. Department of Atmospheric Sciences, Zhongshan University, Guangzhou 510275, China) Macao Meteorological/Geophysical Bur Department of Atmospheric Sciences Zhongshan University Macao Macau

The movement of Typhoon Maggie (9903) in June 1999 is one of the rare cases ever seen in the history. At 00U on June 6 Maggie was located at about 70 km to the southwest of Taiwan. When it arrived at the coastal region of Shanwei City (22.8N, 116.5E), it turned suddenly to move southwestward along the southern China coastal line. De June 7 Maggie finally turned to move northward, making landfall to the north of Shangchuan Island. The experimental numerical prediction system on typhoon movement that was designed based on MM5 is proved quite successful for the 48h prediction of Maggie's movement and rainfall. The mean prediction error of typhoon track is 81 km for 0-24 h and 74 km for 24-48 h. The location of typhoon center in the initial field of the model is approximately 100 km away from the actual observations. In order to modify the location of typhoon center, a bogus typhoon was intro- duced into the model and the prediction of typhoon track was improved in 0-24 h time interval. But the prediction error was enlarged in 24-36 h. We also performed a sensitivity experiment of changing the land of southern China into the ocean. It is found that the orientation of South China coastal line and the topography have no obvious effect on the movement of Typhoon Maggie.

关键词： Typhoon movement numerical prediction South China coastal line

儿科毕业生中儿科从业者与非儿科从业者的职业满意度及职业发展比较

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温州医科大学学报 2023年第2期53卷 161-165,F0003页

作者：林文诗施红英阮积晨温州医科大学团委浙江温州325035 温州医科大学公共卫生与管理学院浙江温州325035 温州医科大学附属第二医院育英儿童医院儿童血液科浙江温州325027 温州医科大学阿尔伯塔学院浙江温州325035

目的:了解儿科毕业生对儿科职业认同度,从事儿科职业满意度及职业发展等情况,为儿科医师的培养和发展提供参考依据。方法:选择温州医科大学2007届至2017届的儿科专业(方向)毕业生、35岁及以下群体共210名作为研究对象,采用自编问卷开展... 详细信息

目的:了解儿科毕业生对儿科职业认同度,从事儿科职业满意度及职业发展等情况,为儿科医师的培养和发展提供参考依据。方法:选择温州医科大学2007届至2017届的儿科专业(方向)毕业生、35岁及以下群体共210名作为研究对象,采用自编问卷开展调查,并对儿科从业者和非儿科(其他临床科室)从业者在职业满意度、职业发展进行对比分析。结果:男性儿科毕业生儿科就职率(49.52%)低于女性(53.80%),在2007—2014年期间毕业年份越晚选择儿科职业的比例越低。儿科从业者的职业满意率(66.36%)低于非儿科从业者(85.84%),且性别、医院等级、工作城市等级对两组之间的满意率无影响(均P交互>0.05)。儿科从业者的出国进修率(1.92%)低于非儿科从业者(13.20%)。工作8年及以上的儿科毕业生中,儿科从业者的中级及以上职称率(54.28%)低于非儿科从业者(84.38%),且医院等级、学历对两组之间的中级及以上职称率无影响(均P交互>0.05)。结论:35岁以下青年儿科毕业生儿科职业认同度不稳定,儿科从业者的职业满意度相对较低、职业发展相对较慢。

关键词：儿科毕业生职业认同职业满意度职业发展