0812号台风鹦鹉分析

利用常规观测资料、雷达资料分析了台风"鹦鹉"影响过程的环流形势特征,发现:(1)台风鹦鹉的影响期间,南压高压中心位置稳定在青藏高原东部,有利于台风右侧高层的辐散流场;(2)副高强度偏弱位置偏东,不利台风东侧水汽输送.700hPa槽后的偏北气流大举南下与台风前的偏北气流合并,台风中层冷空气的入侵影响有利暴雨的发生;(3)...

Analysis of Typh00n 0812 "Nuri"

Using conventional observation data,radar data,the circulation characteristics of typhoon "Nuri"were analyzed.The results show that ①the stability of South Asia High center in the east of Tibetan Plateau is conducive to the high level divergence on the right side of typhoon.②Weak strength and eastward position of the subtropical high is not conducive to moisture transport in the east of typhoon.Two northerly flow that after 700hPa trough and before typhoon let the cold air invading in the middle-level to cause the storm.③The low-level shear in the southern Guangxi provide the impetus conditions,and the relatively narrow jet in the north of 20°N from the South China Sea provide water vapor which maintain the strength of the typhoon and cloud.④From Nanning Doppler Radar velocity images,γ-mesoscale rain cluster and the rain intensity distribution have a good correspondence.The heavy rain is due to the growing strong convective cells.