STATISTICAL ANALYSIS OF SUMMER TROPICAL CYCLONE REMOTE PRECIPITATION EVENTS IN EAST ASIA FROM 2000 TO 2009 AND NUMERICAL SIMULATION

作     者：丁治英 赵晓慧 邢蕊 高勇 

作者机构：Key Laboratory of Meteorological DisasterMinistry of Education/Joint International Research Laboratory of Climate and Environment Change/Collaborative Innovation Center on Forecast and Evaluation of Meteorological DisastersNanjing University of Information Science and TechnologyNanjing 210044 China Institute of Atmospheric SciencesNanjing University of Information Science and TechnologyNanjing 210044 Chongqing Institute of Meteorological SciencesChongqing 401147 

出 版 物：《Journal of Tropical Meteorology》 (热带气象学报（英文版）)

年 卷 期：2017年第23卷第1期

页      面：37-46页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：National Natural Science Funding(41530427) State Key Laboratory of Severe Weather,Chinese Academy Meteorological sciences(2015LASW-A07) Project Supported by the Jiangsu Province Ordinary University Graduate Student Scientific Research and Innovation Program(CXZZ12_0495) 

主　　题：tropical cyclone(TC) remote precipitation numerical simulation water vapor channel 

摘      要：Using 1°×1° final analysis(FNL) data from the National Centers for Environmental Prediction(NCEP),precipitation data from the Tropical Rainfall Measuring Mission(TRMM) and the best-track tropical cyclone(TC)dataset provided by the Japan Meteorological Agency(JMA) for June-August of 2000-2009, we comprehensively consider the two factors low-level moisture channel and interaction between TCs and mid-latitude systems and implement a statistical analysis of remote precipitation in East Asia to the north of 0° and to the west of 150° E. 48 cases of remote precipitation occurred in this period, which are categorized into five classes. After a composite analysis of the different classes, the main systems at 850 h Pa and 500 h Pa that impact the remote precipitation are as follows:TC, mid-latitude trough, subtropical high and water vapor channel. In particular, the water vapor channel which usually connects with Indian monsoon has the most significant impact on remote heavy rainfall. Another important factor is the mid-latitude trough. The type of north trough/vortex-south TC remote precipitation events happen most frequently,accounting for 68.8% of the total incidence. Most remote precipitation events occur on the right side of the TC path(representing 71% of the total number). At 200 h Pa, the remote precipitation events usually occur on the right rear portion of a high-altitude jet stream, and there is an anti-cyclonic vortex to the east and west of the TCs. When there is no anti-cyclonic vortex to the east of the TC, the TC is relatively weak. When the remote precipitation occurs to the northwest of the TC and there is a trough in the northwest direction, the TC is relatively strong. Numerical experiments are carried out using Weather Research and Forecast(WRF) model. The results shows that the TC plays a main role in producing the heavy precipitation and results in the enhancement of precipitation by impacting the water vapor channel.