云南省南涧县气候季节变化特征分析

Analysis on seasonal variation of climate in Nanjian County,Yunnan Province

利用南涧国家一般气象站1962-2016年逐日平均气温资料,按照《气候季节划分》方法,对南涧县近55年来进入四季时间,每个季节持续天数进行分析。利用线性回归分析法对其变化特征进行分析。结果表明:南涧县属无冬区,常年春、夏、秋季起始日期为1月1日、5月2日和9月17日,近55年来,夏季开始时间呈提前趋势,秋季开始时间呈推迟趋势,气候倾向率分别为-0.74d/10a和1.144d/10a。常年春季、夏季和秋季持续时间分别为121d、138d和106d,近55年来夏季持续时间明显增长,春、秋季缩短,气候倾向率分别1.884d/10a、0.73d/10a和1.144d/10a。

Based on the daily mean temperature data of 1962-2016 national average weather station, this paper analyzes the number of days in each season in Nanjian County in the past 48 years according to the ＂climate seasons＂ method. The change characteristics were analyzed by linear regression analysis. The results show that the beginning date of the spring, summer and autumn in Nanjian County is January 1, May 2 and September 17, and the summer start time is the trend in the past 55 years. And the climatic tendency rates were -0.74 d / 10a and 1.144 d / 10a, respectively. Perennial spring, summer and autumn duration were 121d, 138d and 106d, respectively. During the past 55 years, the duration of summer was significantly increased, and the spring and autumn were shortened. The climate tendency was 1.884d / 10a, 0.73d / 10a and 1.144d / 10a respectively.