2019年广西异常暖冬的气候成因分析  

Climate cause analysis of Guangxi’s abnormal warm winter in 2019

作　　者：李妍君 陆虹[1] 覃卫坚[1] 孙明 Li Yanjun;Lu Hong;Qin Weijian;Sun Ming(Guangxi Climate Center,Nanning Guangxi 530022;Guangxi Institute of Meteorological Science,Nanning Guangxi 530022)

机构地区：[1]广西气候中心,南宁530022 [2]广西气象科学研究所,南宁530022

出　　处：《气象研究与应用》2020年第1期75-78,共4页Journal of Meteorological Research and Application

基　　金：国家自然科学基金项目(41565005);广西自然科学基金项目(2019GXNSFAA245048);广西区气象局气象科研计划项目(桂气科2019M02);广西红树林保护与利用重点实验室开放基金课题(GKLMC-201804)。

摘　　要：选取1961-2019年广西国家气象观测站气温观测资料、NOAA/ESRL高度场及海平面气温资料,分析了2019年广西异常暖冬的气候背景、大气环流及海温外强迫因子的影响。结果表明,西太平洋副热带高压偏大、偏强、偏西,赤道中东太平洋海平面温度偏高,西伯利亚高压强度和冬季风偏弱,导致冷空气难以南下,南方暖气流占主导地位,是2019年广西冬季气温偏高主要原因。Based on temperature observation data of Guangxi national meteorological observatories from 1961 to 2019, NOAA/ESRL height field and sea level temperature data, the paper analyzed the climate background,the effects of atmospheric circulation and external forcing factors on sea temperature of the warm winter in 2019.The study found that the high winter temperature in Guangxi in 2019 was mainly due to the high, strong, and westward subtropical high in the Western Pacific, the high sea surface temperature in the Middle-east Equator Pacific Ocean, the weak Siberian high and the weak winter monsoon, which made it difficult for the cold air to move southward so that the southern heating flow dominated Guangxi.

关 键 词：冷高压 季风 海温 强暖冬 气候异常 

分 类 号：P46[天文地球—大气科学及气象学]