玉屏1960-2020年冷暖冬及低温气候变化特征

The Characteristics of Cold and Warm Winter and Low Temperature Climate Change in Yuping from 1960 to 2020

使用玉屏县国家站1960—2020年逐日平均及最低气温资料,在分析玉屏冬季冷暖变化的基础上进一步研究气温≤0℃日数的气候变化特征,为冬季气候决策服务及农业生产提供参考。结果表明:玉屏1960—2020年冬季平均气温最低为4.5℃,最高为8.6℃,常年气候值为6.8℃;冷冬年数为30年(49.2%),暖冬年数为14年(23.0%),常冬年数为17年(27.9%),且冬季平均气温呈现波动上升趋势;1980—2009年的气候倾向率通过了α=0.02的显著性检验;气温≤0℃日数在1989年开始显著减少。

This paper uses the daily average minimum temperature from 1960 to 2020 at the National Station of Yuping County.Based on the analysis of the cold and warm changes in Yuping in winter,this paper further studies the characteristics of climate change with temperatures≤0℃,providing references for winter climate decisionmaking services and agricultural production.The results shaw that:From 1960 to 2020,the average temperature in Yuping Yuping is the lowest of 4.5℃,the highest is 8.6℃,and the annual climate value is 6.8℃;The number of cold winters is 30 years(49.2%),and the number of warm winters is 14 years(23.0%).The climate value is 14 years(23.0%),the annual climate value is 6.8℃,the number of winter years is 17 years(27.9%),and the average winter temperature shows a downward trend.The climate and climate rate from 1980 to 2009 passed theα=0.02 significance test;the number of days with temperature≤0℃began to drop significantly in 1989.