摘要
大气边界层作为连接下垫面和自由大气的重要桥梁,不仅影响局地的各种天气过程的发展和演变,而且在区域和全球的天气和气候变化中也扮演着关键角色。鉴于大气边界层自身的复杂性,对其数值模拟一直以来都是大气数值模拟研究中的热点和难点。通过归纳近几十年来大气边界层数值模式发展经历的3个阶段,梳理了干旱半干旱区、青藏高原地区和城市复杂下垫面3个陆地气候关键区边界层过程,以及海洋上特殊的台风边界层数值模拟研究取得的重要进展;总结出当前大气边界层数值模拟研究所面临的5个亟待解决的关键科学问题:云与边界层相互作用、边界层参数化、模式分辨率、边界层资料同化以及边界层发展机制。并明确了该领域未来需要在加强不同类型大气边界层过程的认识、边界层底和顶界面交换过程的理解、特殊地区边界层发展机制的解释、边界层参数化方案的改进、大涡模拟在边界层模拟中优势的充分发挥等5个方面开展重点研究,以期能为今后更系统地开展大气边界层数值模拟及相关研究提供参考依据。
As an important bridge between the underlying surface and the free atmosphere,the atmospheric boundary layer is not only closely related to the development of various weather processes,but also plays a key role in local and regional weather and climate changes.In view of the complexity of the atmospheric boundary layer,the numerical simulation of the atmospheric boundary layer has always been a hotspot and difficulty in the numerical simulation research of the atmosphere.In this paper,the three numerical model development stages of the atmospheric boundary layer in recent decades were summarized and the important advances in arid and semiarid areas,Tibet Plateau,urban complex underlying surface,and special typhoon boundary layer were reviewed.At present,there are still five scientific problems to be solved urgently,including cloud and boundary layer interaction,boundary layer parameterization,model resolution,boundary layer data assimilation and boundary layer development mechanism.Moreover,it was pointed out that in this field we need to strengthen the understanding of different types of atmospheric boundary layer processes,boundary layer bottom and top interface exchange,boundary layer development mechanism in special regions,improve boundary layer parameterization scheme and give full play to the advantages of LES in boundary layer simulation.
作者
王蓉
张强
岳平
黄倩
Wang Rong;Zhang Qiang;Yue Ping;Huang Qian(Key Laboratory for Semi-Arid Climate Change of the Ministry Education,College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China;Gansu Weather Modification Office,Lanzhou 730020,China;Gansu Meteorological Bureau,Lanzhou 730020,China;Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province,Institute of Arid Meteorology,China Meteorological Administration,Lanzhou 730020,China)
出处
《地球科学进展》
CAS
CSCD
北大核心
2020年第4期331-349,共19页
Advances in Earth Science
基金
国家自然科学基金重点项目“我国夏季风影响过渡区陆—气相互作用及其对夏季风响应研究”(编号:41630426)
国家自然科学基金青年科学基金项目“半干旱区边界层顶的界面交换过程及其对边界层发展的影响”(编号:41905011)资助
关键词
大气边界层
数值模拟
边界层湍流
Atmospheric boundary layer
Numerical simulation
Boundary layer turbulence
