摘要
文章利用MICAPS常规观测资料、卫星云图资料及C波段雷达资料对青海省海南州贵南地区 2023 年3 月 29 日暴雪天气过程进行分析,结果表明:500 hPa高空短波槽及切变线是此次暴雪天气过程高空的主要影响系统;低空及地面较好的水汽条件、不稳定层结和触发机制相互配合,构成了贵南地区出现极端性降雪天气有利的气象因子;十分充沛的局地水汽条件是此次极端降雪天气发生的主要原因之一;贵南地区中小尺度的气旋式辐合系统提供了较好的辐合抬升条件,这是此次暴雪天气过程局地性强和降水强度大的另一个原因.分析结果可为今后类似暴雪天气过程预报提供参考依据.
Abstract
Using MICAPS conventional observation data,satellite cloud image data,and C-band radar data,this article analyzes the heavy snow weather process in Guinan Region,Hainan Prefecture,Qinghai Province on March 29,2023.The results show that the 500 hPa high altitude short wave trough and shear line are the main influencing systems in the high altitude of this weather process.The combination of favorable water vapor conditions,unstable stratification,and triggering mechanisms at low altitudes and on the ground constitute favorable meteorological factors for the occurrence of extreme snowfall in Guinan region.The abundant local water vapor conditions are one of the main reasons for the occurrence of this extreme snowfall weather.The small-scale cyclonic convergence system in Guinan region provides good conditions for convergence and uplift,which is another reason for the strong locality and precipitation intensity of this process.The analysis results can provide reference basis for predicting similar heavy snow weather processes in the future.
NETL
NSTL
维普
万方数据