大气科学2018，Vol.42Issue(2)：383-397,15.DOI:10.3878/j.issn.1006-9895.1705.17149
2016年01号台风"尼伯特"对一次梅雨期降雨影响的数值试验
A Numerical Study of Typhoon "Nepartak" Impacts on a Precipitation Event during Meiyu Period
摘要
Abstract
In this paper, the effects of typhoon Nepartak on a Meiyu frontal precipitation event is explored by using the piecewise potential vorticity inversion method and the mesoscale WRF model. The results show that after weakening (strengthening) the typhoon, the water vapor flux over the rainfall area increased by 7.34% (decreased by 6.67%), the kinetic energy increased by 7.78% (decreased by 5.36%), the convective available potential energy increased by 6.66% (decreased by 5.71%), and accumulated precipitation in the Yangtze–Huaihe River basin increased by 10.21% (decreased by 8.13%). During the period when typhoon Nepartak was strengthening and approaching Mainland China, the subtropical high was forced to move northward and retreat eastward, which could directly prevent the water vapor and thermal energy from transporting to the Yangtze–Huaihe River basin along the edge of the subtropical high and indirectly lead to significant precipitation reduction and even disappearance in the area. In addition, accompanied with the intensification of typhoon, the depletion of water vapor and energy of the noumenon circulation increased, leading to decreases in water vapor and energy transport form the Bay of Bengal to Yangtze–Huaihe River basin. As a result, the Meiyu frontal precipitation terminated.关键词
梅雨锋/台风/分段位涡反演/西太副高Key words
Meiyu front/Typhoon/Piecewise potential vorticity inversion/Western Pacific subtropical high分类
天文与地球科学引用本文复制引用
田亚杰,黄泓,王春明..2016年01号台风"尼伯特"对一次梅雨期降雨影响的数值试验[J].大气科学,2018,42(2):383-397,15.基金项目
国家自然科学基金项目41375049、40905021、41275099,中国博士后科学基金项目2011M500894,国家公益性行业(气象)科技专项GYHY20120605,National Natural Science Foundation of China (Grants 41375049, 40905021, 41275099), China Postdoctoral Science Foundation (Grant 2011M500894), Special Scientific Research Fund of Meteorological Public Welfare Profession of China (Grant GYHY20120605) （气象）
