Changes in the Beginning Date and Duration of the Four Seasons in Zhejiang Province  

作　　者：Liang Xiaoni Zheng Weicai Lei Jun 

机构地区：[1]Zhejiang Provincial Meteorological Service Center,Hangzhou 310017,China [2]Deqing Meteorological Bureau,Deqing 313200,China

出　　处：《Meteorological and Environmental Research》2017年第4期7-11,共5页气象与环境研究（英文版）

摘　　要：Based on data of daily average temperature from 62 national ground observation stations in Zhejiang Province during 1971-2015,the changing trends and spatial distribution of beginning date and duration of the four seasons in Zhejiang Province were analyzed by using the least square method,and significance test was conducted by using correlation coefficient. The results show that according to the changing characteristics of the four seasons in Zhejiang Province,autumn and winter began later,while spring and summer started earlier than before; the duration of summer lengthened,while the duration of winter shortened,and there were great changes in summer and winter but small changes in spring and autumn. Seen from the spatial distribution of beginning date and duration of the four seasons,the correlation in middle and northern Zhejiang was better than that in southern Zhejiang.Based on data of daily average temperature from 62 national ground observation stations in Zhejiang Province during 1971-2015,the changing trends and spatial distribution of beginning date and duration of the four seasons in Zhejiang Province were analyzed by using the least square method,and significance test was conducted by using correlation coefficient. The results show that according to the changing characteristics of the four seasons in Zhejiang Province,autumn and winter began later,while spring and summer started earlier than before; the duration of summer lengthened,while the duration of winter shortened,and there were great changes in summer and winter but small changes in spring and autumn. Seen from the spatial distribution of beginning date and duration of the four seasons,the correlation in middle and northern Zhejiang was better than that in southern Zhejiang.

关 键 词：BEGINNING DATE DURATION The four SEASONS CHANGES ZHEJIANG Province 

分 类 号：P467[天文地球—大气科学及气象学]