青海省近60年气温变化特征分析

Analysis of Temperature Variation Characteristics in Qinghai Province in Recent 60 Years

利用青海省1961—2021年气象观测站年平均气温、最低气温和最高气温观测资料,采用线性回归、距平计算等方法,分析青海省1961—2021年气温变化特征。结果表明:青海省年和四季平均气温均呈现出升高趋势,尤以秋和冬季对年气候变化趋势的贡献最大,全省大部分地区年平均气温以增暖趋势为主,以柴达木盆地升温最为明显;青海省年和四季平均最高气温呈现出上升趋势,全省大部分地区年平均最高气温变化率在-0.04℃/10年~0.83℃/10年之间,青南牧区变化尤为明显;青海省年和四季平均最低气温呈现出上升趋势,全省大部分地区年平均最低气温变化率在-0.06℃/10年~1.12℃/10年之间,柴达木盆地、环青海湖地区变化率没有太大变化,尤以冬季平均最低气温上升趋势最为显著。

Based on the annual average temperature,minimum temperature and maximum temperature data of meteorological observation stations in Qinghai Province from 1961 to 2021,the The characteristics of temperature variation in Qinghai Province from 1961 to 2021 are analyzed by linear regression and anomaly calculation.The results show that the annual and seasonal average temperature in Qinghai Province shows an upward trend,especially autumn and winter contribute the most to the annual climate change trend.The annual average temperature in most parts of the province is dominated by the warming trend,especially in Qaidam Basin;The annual and seasonal average maximum temperature in Qinghai Province shows an upward trend.The annual average maximum temperature variation rate in most parts of the province is between-0.04℃/10 years~0.83℃/10 years,especially in the pastoral area of Southern Qinghai;The annual and seasonal average minimum temperature in Qinghai Province shows an upward trend.The annual average minimum temperature variability in most parts of the province is between-0.06℃/10 years~1.112℃/10 years.There is no significant change in the variability in Qaidam Basin and around Qinghai Lake,especially in winter.