未来土地利用类型对珠江三角洲气象场的影响  

Impacts of future land use on meteorological conditions over the Pearl River Delta Region

作　　者：周密[1,2] 常鸣[3] 赖安琪[1] 樊琦[1] 王雪梅[2] 李郇[4] 王明洁 陈训来 ZHOU Mi;CHANG Ming;LAI An-qi;FAN Qi;WANG Xue-mei;LI Xun;WANG Ming-jie;CHEN Xun-lai(Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, School of Atmospheric Science, Sun Yat-Sen University, Guangzhou 510275, China;Institute for Environmental and Climate Research, Jinan University, Guangzhou 511443, China;School of Physics, Peking University, Beijing 100871, China;School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China;Meteorological Bureau of Shenzhen Municipality, Shenzhen 518040, China)

机构地区：[1]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,广东广州510275 [2]暨南大学环境与气候研究院,广东广州511443 [3]北京大学物理学院,北京100871 [4]中山大学地理科学与规划学院,广东广州510275 [5]深圳市气象台,广东深圳518040

出　　处：《中国环境科学》2017年第8期2896-2904,共9页China Environmental Science

基　　金：气象行业专项项目(GYHY201406031);广东省科技计划项目(2014B020216003);国家自然科学基金资助项目(91544102,41630422);国家重点研发计划大气专项课题(2016YFC0203305);国家科技支撑计划项目(2014BAC21B02);深圳南方强天气研究重点实验室开放项目;中山大学重大项目培育和新兴、交叉学科资助项目(15lgjc06)

摘　　要：利用WRF/Noah/UCM开展未来下垫面变更的对比试验,分别对珠江三角洲区域冬季(1月)和夏季(7月)的气象场特征进行数值模拟,以探讨未来城镇化建设对区域气象条件的影响.WRF模式中控制试验使用GLC2009下垫面资料,敏感性试验使用变更后的下垫面资料.对比试验的结果表明:由于城市扩张,受下垫面类型变化的影响,地表能量平衡会发生显著变化;珠江三角洲建成区的气温将升高0.75℃(1月)及1.20℃(7月),相对湿度将下降2.61%(1月)与6.88%(7月);城市热岛效应将增强,城乡温差将升高0.21℃(1月)及0.41℃(7月);局地热力环流与背景流场叠加,将使得1月风速降低0.11m/s,而7月风速升高0.11m/s.近地面的变化可以传递到整个边界层内,并使得边界层高度抬升.A coupled WRF/Noah/UCM model was employed to investigate the change of the underlying surface and simulate the impacts of urban expansion in the Pearl River Delta(PRD)on regional meteorological conditions in winter(January)and summer(July)in the future.The land use types were updated in the WRF model based on“the full scale strategic planning of the Pearl River Delta for the period of2014~2020”.In WRF model simulation,the GlobCover2009(GLC2009)underlying surface data were used in the control experiment,while the updated one was employed in the sensitivity experiment.Several conclusions can be drawn from this study:significant changes of surface energy balance were observed due to the change of the underlying surface types that are caused by urban expansion;urban temperatures in the PRD region increase by0.75℃and1.20℃respectively in January and in July;relative humidity decrease by2.61%and by6.88%respectively in January and in July;urban heat island effect will be strengthened;the temperature difference between urban areas and rural areas increased by0.21℃and by0.41℃respectively in January and in July;the superimposing effect of thermal circulation and the large-scale circulation resultd in decrease of the wind speed by0.11m/s in January and increase by0.11m/s in July.In addition,changes near the surface can influence the whole boundary layer and increase the boundary layer height.

关 键 词：WRF/Noah/UCM 城市规划 数值模拟 地表能量平衡 城市热岛 

分 类 号：X321[环境科学与工程—环境工程]