近30年新疆地区气温时空变化特征

Characteristics of Spatial and Temporal Variations of Air Temperature in Xinjiang in the Nearly 30 Years

本文基于CRU气温数据,采用Mann-Kendall突变检验、线性趋势法,分析了近30年中国区域气温年际以及四季的时空变化特征。结果表明:1990~2022年新疆地区气温年际以及秋、冬两个季节均呈不显著增温趋(P > 0.05),春、夏两个季节呈现显著增温趋势(P In this paper, based on CRU temperature data, Mann-Kendall mutation test and linear trend method are used to analyze the spatial and temporal variations of inter-annual and four seasons of regional temperature in China in recent 30 years. The results showed as follows: During 1990~2022, the temperature in Xinjiang showed no significant warming trend in the inter-annual and autumn and winter seasons (P > 0.05), while the temperature in spring and summer showed a significant warming trend (P < 0.05). The spatial pattern of interannual and four seasons is basically the same. The high temperature areas are distributed in the central part of southern Xinjiang. The low temperature areas are distributed in the Tianshan Mountains, and the temperature in southern Xinjiang is higher than that in northern Xinjiang in all seasons. In terms of spatial variation trend, the whole region showed a trend of increasing temperature or decreasing temperature, and there were relatively many significant variation areas.