城市复杂下垫面对区域水汽传输影响机理及应用研究

As the world is continuously been urbanized, a growing population will be affected by environmental issues in urban context. Dealing with these issues highly depend on the understanding of hydrometeorological processes involved in cities and their adjacent regions, amongst which the key lies on the water vapor transport. This study, focusing on the mechanism for regional water vapor transport under impacts by urban complex surfaces, will be conducted by three stages, which are pattern, mechanism and simulation. At the pattern stage, the linkage between urban characteristics and regional water vapor transport will be established. At the mechanism stage, the key processes for water vapor transport and the related impacts of urban surfaces will be recognized. At the simulation stage, the assessment for measures modifying regional hydrometeorological processes via urban surface configurations will be conducted. Methodology in the present study consists of data analysis, coupled modeling and scenario simulations. This study, setting Greater Beijing Area as the context, is expected to provide insights for understanding the hydrometeorological processes in urban areas, to enrich the scientific knowledge for coping with urban environmental issues, and to shed light on the environment-friendly urbanization.

随着世界范围内城市化进程的不断发展，越来越多的人将受到城市环境问题的影响。这些环境问题的应对与城市及周边区域的气象水文过程密切相关。其中，水汽输送过程是城市地区气象水文研究的重大科学问题。本项目将以城市下垫面对水汽传输的影响机理为核心，从规律、机理和模拟三个层面展开研究：从规律上，认识城市下垫面典型要素及关键物理过程与区域水汽传输的联系；从机理上，识别城市下垫面影响水汽传输的关键过程和作用效果；从模拟中，评价城市下垫面不同配置形式对典型天气情景下城市区域气象水文过程的调控效果。本项目将采用数据分析、耦合模拟、情景分析等手段，选择北京地区作为典型区域开展研究，预期将对城市地区气象水文过程的调控提供新思路和新方法，也将为应对城市环境问题提供科学依据，为实现生态和谐的城市化发展提供有益指导。

随着世界范围内城市化进程的不断发展，越来越多的人将受到城市环境问题的影响。这些环境问题的应对与城市及周边区域的气象水文过程密切相关。其中，水汽输送过程是城市地区气象水文研究的重大科学问题。本项目以城市下垫面对水汽传输的影响机理为核心，从规律、机理和模拟三个层面展开研究：从规律上，认识城市下垫面典型要素及关键物理过程与区域水汽传输的联系；从机理上，识别城市下垫面影响水汽传输的关键过程和作用效果；从模拟中，评价城市下垫面不同配置形式对典型天气情景下城市区域气象水文过程的调控效果。本项目采用数据分析、耦合模拟、情景分析等手段，选择北京、杭州地区作为典型区域开展研究，对城市地区气象水文过程的调控提供了新思路和新方法，也将为应对城市环境问题提供科学依据，为实现生态和谐的城市化发展提供有益指导。