宝应2016年1月和2021年1月2次寒潮降温过程的对比分析  

Comparative Analysis of Two Cold Wave Cooling Processes in Baoying in January 2016 and January 2021

作　　者：徐昝敏 周舒佳 何馨紫 王春晖 刘玲 XU Zanmin(Meteorological Bureau of Baoying County,Jiangsu Province,Baoying,Jiangsu 225000)

机构地区：[1]江苏省宝应县气象局,江苏宝应225000 [2]江苏省金坛区气象局,江苏常州213000 [3]江苏省泗阳县气象局,江苏泗阳223800

出　　处：《农业灾害研究》2022年第8期35-38,共4页Journal of Agricultural Catastrophology

基　　金：扬州市气象局市立科研项目(202102);淮河流域气象开放研究基金(HRM 201702)。

摘　　要：2016年1月24日和2021年1月8日2次寒潮过程的最低温度打破了宝应地区在21世纪最低温度的历史记录。利用NCEP/NCAR再分析资料和常规观测资料,通过对比2次寒潮过程的大气环流形势、冷平流和降水,分析了2次寒潮过程的降温原因。结果表明:(1)2016年寒潮宝应地区出现了降温、大风和雨雪天气,而2021年寒潮出现了降温和大风天气。(2)2次寒潮的最低温度都降至-12℃,但2021年寒潮的降温幅度大于2016年寒潮。虽然2次寒潮都是横槽转竖引导的冷空气,但是2021年寒潮强度强于2016年寒潮的主要原因包括:受暖高压脊的影响,2021年寒潮前期的回暖程度比2016年寒潮更高;2021年寒潮的冷平流中心相比2016年寒潮更强,且影响范围更广。The minimum temperature of the two cold wave processes on January 24,2016 and January 8, 2021 broke the historical record of the lowest temperature in Baoying area in the 21st century. Based on the NCEP/NCAR reanalysis data and conventional observation data, this paper analyzes the causes of the cooling of the two cold wave processes by comparing the atmospheric circulation, cold advection and precipitation of the two cold wave processes. The results show that:(1) in 2016, the cold wave Baoying area experienced cooling, strong wind, rain and snow, while in 2021, the cold wave experienced cooling and strong wind.(2) The minimum temperature of the two cold waves has dropped to-12℃, but the cooling range of the cold wave in 2021 was greater than that in 2016. Although the two cold waves were cold air led by the horizontal trough to the vertical,the main reason why the cold wave intensity in 2021 was stronger than that in 2016 was that:affected by the warm high ridge, the warming degree in the early stage of the cold wave in 2021 is greater than that in 2016. The cold advection center of the cold wave in 2021 is stronger than that of the cold wave in 2016,and the impact range is wider.

关 键 词：寒潮降温 前期回暖 冷平流 

分 类 号：P425.54[天文地球—大气科学及气象学]