1960—2020年京津冀高温热浪时空分布特征  

Temporal-Spatial Characteristics of Summer Heat Wavein Beijing-Tianjin-Hebei Region During 1960-2020

作　　者：张兴山[1] 王娟怀[2] 赵亮[3] 李猛[1] 包永虎 Zhang Xingshan;Wang Juanhuai;Zhao Liang;Li Meng;Bao Yonghu(Handan Meteorological Bureau,Handan 056001,China;Guangdong Climate Center,Guangzhou 510080,China;State Key Laboratory of Numerical Modeling for Atmosphere Sciences and Geophysical Fluid Dynamics(LASG),Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]邯郸市气象局,河北邯郸056001 [2]广东省气候中心,广东广州510080 [3]中国科学院大气物理研究所大气科学和地球流体力学数值模拟国家重点实验室,北京100029

出　　处：《气象与减灾研究》2022年第3期179-186,共8页Meteorology and Disaster Reduction Research

基　　金：中国科学院战略性先导科技专项(A类)子课题(编号:XDA20100304);国家自然科学基金项目(编号:42075040).

摘　　要：利用1960—2020年京津冀83个气象观测站常规观测资料,统计分析了京津冀高温热浪日数、频次、有效积温分布特征及变化规律。结果表明:1)气候态上,京津冀高温热浪日数、频次和有效积温在空间上均呈现南多(强)北少(弱)的分布特征,大值区均位于39°N以南。2)京津冀地区高温热浪具有2—5 a显著的短振荡周期,同时也具有“多—少—多—少”的年代际变化特征;高温热浪日数、频次和有效积温均出现了3次突变点,并且第一次和第二次突变较第三次突变明显。3)对比两次高温热浪日数集中偏多期发现,最近一个偏多集中期(1996—2005年)相对于上一个(1960—1972年)表现为北增南减的特征;对比两次偏少集中期发现,最近一个偏少集中期(2006—2020年)相对于上一个(1973—1995年)表现为中南部整体增加的特征,且高温热浪日数大于4 d的影响区域均呈扩大的态势。Based on 83 meteorological observation stations data in Beijing-Tianjin-Hebei region during 1960-2020,the distributions of heat wave days,heat wave frequency,effective accumulated high temperature and their variations were analyzed.The results showed that:1)The number of days,frequency and effective accumulated temperature of the high temperature heat wave in Beijing-Tianjin-Hebei all presented spatial distribution pattern of more(stronger)in the south and less(weaker)in the north,and the larger value areas located in the south of 39°N.2)The high temperature heat wave in the Beijing-Tianjin-Hebei region presented a significant short oscillation period of 2-5 a,and the characteristics of intergenerational change showed“more-less-more-less”.Three mutations occurred in the number of days,frequency and effective accumulated temperature of the high temperature heat wave.Meanwhile,the first and second mutations were more obvious than the third one.3)The more concentrated period of high temperature heat wave days presented“north increase and south decrease”during 1996-2005 compared with the previous one(1960-1972).Similarly,the latest less concentrated period(2006-2020)showed the characteristics of“overall increase in central and southern China”and the influence areas of greater than 4 d expanded compared with the previous one(1973-1995).

关 键 词：高温热浪 有效积温 时空特征 京津冀 

分 类 号：P468[天文地球—大气科学及气象学]