台风“碧利斯”与“桑美”路径相似的成因分析  

Analysis on Similarity Track of Typhoon ″ Bilis ″ and ″ Saomai ″

作　　者：周佳 吕江山 姜建丰 

机构地区：[1]浙江省温州市永嘉县气象局,浙江永嘉325100 [2]温州市泰顺县气象局

出　　处：《现代农业科技》2013年第18期242-243,247,共3页Modern Agricultural Science and Technology

摘　　要：利用1°×1°的NCEP全球再分析资料和实时高空、地面加密探测等资料,综合分析了环流背景、海表面温度和850 hPa的涡度变化对"碧利斯"和"桑美"台风的路径的影响。结果表明:它们在500 hPa的引导气流相似,都是受副高南侧的偏东气流的影响;在台风发展的过程中,在它们的西北方向都有暖舌稳定存在;在台风运动过程中,在850 hPa上总有一个正的涡度中心在它们的西北方向,引导它们向西北方向运动。By using NCEP global 1°×1° re-analysis data,real-time radiosonde and intensive surface observation data,a comprehensive analysis was made of the influence of circulation background, temperature field and field of vorticity activity on the track of typhoon ＂Bilis＂ and ＂Saornai＂. The results showed that they had the likeness steering flow at 500 hPa,all under the influence of the east current of air;They had a warm tongue stability existence in their northwest when they were in the process of development. There was always a positive vorticity center in their northwest directions on the 850 hPa when they moved towards northwest.

关 键 词：台风 路径 引导气流 温度场 涡度场 

分 类 号：P429[天文地球—大气科学及气象学]