东亚地区天气尺度对流层/平流层相互入侵和深交换活动

鉴于天气尺度对流层-平流层交换对物质输送和上对流层-下平流层区辐射强迫的重要性以及针对东亚地区该研究的缺乏，本项目综合利用A-TRAIN等多种高分辨率卫星遥感资料AIRS、MLS、HIRDLS、OMI、CLOUDSAT、CALIPSO、COSMIC 等，配合ECMWF/ERA-Interim 和NCEP/NCAR 再分析气象资料，利用轨迹模式HYSPLIT4、中尺度数值预报模式WRF，研究东亚地区高空急流变化、对流顶折叠、温带低压系统等局地异常环流引发的对流层/平流层相互入侵（深交换）活动。通过对多种物理量的诊断分析，认识东亚地区该类天气尺度平流层/对流层相互入侵事件的特点；通过对典型事件的数值模拟，弄清不同入侵（深交换）事件的产生条件、入侵结构、交换强度、气团来源、生命史等及其与欧美相应事件的差异；为进一步认识东亚地区对流层/平流层耦合提供依据。

In view of the importance of troposphere - stratosphere exchange of synoptic scale in substance transport and radiative forcing and the relative lack of that research in East Asia, high spatial and temporal resolution satellite remote sensing data such as AIRS, MLS, HIRDLS, OMI, CLOUDSAT, CALIPSO, COSMIC, reanalysis meteorological data such as the ECMWF/ERA-Interim and NCEP/NCAR, trajectory model HYSPLIT4 and mesoscale numerical prediction model WRF are used to study the troposphere - stratosphere deep exchange activities during subtropical jet adjustment stage, tropopause folds, extratropical cyclones and other local circulations in East Asia. The characteristics of synoptic scale stratosphere - troposphere mutual intrusion in East Asia will be revealed by a variety of physical diagnosis. The physical processes, dynamic mechanism, the exchange flux and produce conditions of the deep exchange events will be clear by numerical simulation of the typical events. This will provide some basis for further understanding tropospheric - stratospheric coupling and substance exchange in East Asia.