Meteorological Controls on Aerosol Distributions in ACE-Asia

本项目涉及调查控制东南亚气溶胶外流的气象因素。该项目有两个组成部分：1)对气象数据、能见度和沙尘观测进行历史分析；2)为将于2001年春季开展的亚洲区域监测与评估密集实地活动提供业务支助。在历史分析方面，将利用对至少十年的动力变量（即在再分析中获得的气象场）的回顾性分析，记录气旋和反气旋气象系统的结构、强度、发生面积和年际变率。研究将包括地面和高空场，特别是包括与地面系统相关并控制其发展、运动和最终衰减的更大尺度动力环境。研究了矿尘发生与母气象系统的时空关系。

This project involves the investigation of meteorological factors controlling the outflow of aerosols from Southeastern Asia. The project has two components: 1) a historical analysis of meteorological data, visibility, and dust observations, and 2) operational support for the ACE-Asia intensive field campaign to be carried out during spring 2001. For the historical analysis, the structure, intensity, area of occurrence and interannual variability of meteorological systems, both cyclones and anticyclones will be documented using retrospective analyses of dynamical variables (i.e., meteorological fields obtained in a reanalysis) over a period of at least ten years. The research will include the surface and upper air fields, specifically including the larger-scale dynamical environment to which the surface systems relate and which control their development, motion and eventual decay. The spatial and temporal relationship of the occurrence of mineral dust to the parent meteorological system will be investigated.