气象水文海洋仪器2012，Vol.29Issue(3)：47-53,7.
湿位涡和垂直螺旋度在暴雨数值预报中的应用研究
Application of moist potential vorticity and vertical helicity in numerical weather prediction of torrential rain
摘要
Abstract
A typical torrential rain event that occurred in the central and eastern China form August 26 to August 28,2004 at 12:00 is conducted. At the same time,impermeable principle of moist potential vorticity(MPV), the vertical component of moist potential vorticity(MPV1),the horizontal component of moist potential vorticity(MPV2) and vertical helicity are used to diagnostic analysis. By analyzing the daily 00:00 UTC MPV1 and MPV2 at 850 hPa and vertical helicity at 700 hPa,we find that there is the heavy precipitation which located to relatively big value of three overlapping areas of vertical helicity,positive MPV1 and negative MPV2. At 700 hPa,MPV high-value area corresponds to the precipitation area on the ground, and there is a good indication of heavy rain in the central and eastern China if MPV high-value area matches with equivalent potential temperature line. Overlapping areas of positive MPVI and negative MPVz that is not the big value area of vertical helicity may be no orlittle precipitation.关键词
暴雨/数值模拟/湿位涡/相当位温/垂直螺旋度Key words
torrential rain numerical simulation moist potential vorticity equivalent potentialtemperature/vertical helicity分类
天文与地球科学引用本文复制引用
潘业森,王铁,谭言科,彭道睿,赵加华..湿位涡和垂直螺旋度在暴雨数值预报中的应用研究[J].气象水文海洋仪器,2012,29(3):47-53,7.基金项目
国家自然科学基金青年科学基金 （）
