大气科学2017，Vol.41Issue(2)：289-301,13.DOI:10.3878/j.issn.1006-9895.1607.15329
1410号台风Matmo登陆前后的动热力结构演变和水汽输送特征分析
Dynamic and Thermodynamic Structure Analysis of Typhoon Matmo (1410) and Associated Moisture Characteristics Before and After Its Landfall
摘要
Abstract
The characteristics of typhoon Matmo (1410) are analyzed before and after its landfall on Taiwan and Fujian based on the analysis data from NCEP/NCAR (National Centers for Environmental Prediction/National Center for Atmospheric Research) Global Forecast System (GFS),the reanalysis data from ECMWF ERA-Interim and rainfall observations derived from station observations and satellite retrievals of precipitation from 18 to 26 July 2014.The results indicate that the trajectory of Matmo was mostly influenced by the steering flow of snbtropical high.The deep vortex structure of Matmo still maintained around the time of its landing at Fujian,cooperating well with the vertical circulation formed by the ascending motion over southeastern Fujian and the descending motion near Taiwan Strait and western Fujian.Besides,the water vapor originated from the Bay of Bengal and South China Sea were continuously transported into Matmo by the southwesterly jet (wind speed greater than 16 m s-1 at 850 hPa),which provided the necessary energy required for maintaining the typhoon circulation around landing time.The southwesterly jet transported energy and momentum from the South China Sea to the coastal region of southeastem China.Meanwhile,sufficient water vapor transport and convergence of moisture at the low levels were conductive to the occurrence and maintenance of heavy rain caused by Matmo.The result also shows that the weak vertical wind shear,which was favorable for the maintenance of warm core structure and divergence at upper levels,was another reason for the slow weakening of Matmo after its landfall.关键词
Matmo台风/结构演变/水汽输送Key words
Typhoon Matmo/Evolution of structure/Transport of water vapor分类
天文与地球科学引用本文复制引用
颜玲,周玉淑,刘宣飞..1410号台风Matmo登陆前后的动热力结构演变和水汽输送特征分析[J].大气科学,2017,41(2):289-301,13.基金项目
国家重点基础研究发展计划(973计划)项目2015CB452804,国家自然科学基金项目41661144024、41475054、41275065、41475097,高原大气与环境四川省重点实验室开放课题 National Basic Research Program of China (973 Program,Grant 2015CB452804),National Natural Science Foundation of China (Grants 41661144024,41475054,41275065,and 41475097),Open Research Fund Program of Plateau Atmosphere and Environment Key Laboratory of Sichuan Province （973计划）
