摘要
基于349站自动站雨量资料、NCEP1°×1°再分析资料、卫星TBB资料以及河池市复杂的地形特征对2016年6月14-15日强降雨过程进行分析,结果表明:此次暴雨过程分为两个阶段,前一阶段是由超低空急流在山脉迎风一侧辐合抬升及地面中尺度锋区共同作用下产生的暖区暴雨,后一阶段为高空槽引导冷式切变线南下,地面有冷锋相配合产生的锋面暴雨。最强降雨出现在九万大山迎风坡一侧的喇叭口地形处,并且强降雨落区与能量锋区、低层水汽通量辐合及整层可降水量大值区有较好对应。强降雨出现在对流云团TBB大值中心附近,暴雨云团列车效应及中α对流系统在河池东北部山区长时间停滞,是导致该地累积雨量大的重要原因。
Based on the rainfall data of 349 station automatic station, NCEP 1°×1°reanalysis data, satellite TBB data and complex terrain characteristics of Hechi, the heavy rainfall process from June 14 to 16, 2016 was analyzed. The results show that the heavy rain is divided into two stages. The first stage is the warm rain caused by the super-low-level jet in the upwind side of the mountain and the meso-scale front of the ground. The latter stage is the frontal rain created by the cold shear line southward by the high-level trough matching with the ground cold front. The strongest rainfall appeared in the trumpet terrain of the Jiuwan mountain windward slope side, and the strong rainfall zone had a better correspondence with the energy peak area, the low water vapor flux convergence and the whole layer of precipitation. Strong rainfall occurs near the center of TBB large-scale center, and the train effect of heavy rain cloud and the s-convective system in the northeastern part of Heehi are prolonged, which is the important reason for the accumulation of rainfall.
出处
《气象研究与应用》
2017年第1期50-54,I0004,共6页
Journal of Meteorological Research and Application
关键词
暴雨
地形
落区
torrential rain
terrain
raining area
