绿洲农业科学与工程2026，Vol.11Issue(2)：86-94,9.DOI:10.26941/j.cnki.2096-2177.2026.02.013
西宁地区近地面层与500 hPa气温变化特征及相互关系研究
Study on the Characteristics and Interrelationships of Temperature Variations in the Near-Surface Layer and at 500 hPa in the Xining Region
摘要
Abstract
Using monthly average temperature observation data from the surface layer and the 500 hPa isobaric surface in Xining from 08:00 and 20:00 of 2013-2023,this study systematically investigated the temperature trends and interrelationships between the near-surface and lower troposphere in the region.Methods such as climate trend rate,cumulative anomaly,and Pearson correlation analysis were employed.The results show that over the past 11 years,air temperatures at both the surface layer and 500 hPa have shown an upward trend,with the surface layer warming rate(1.21 ℃·(10a)-1at 08:00 and 0.81 ℃·(10a)-1 at 20:00)significantly higher than that at 500 hPa(0.08℃·(10a)-1at 08:00 and 0.17 ℃·(10a)-1 at 20:00).The interannual variations of temperature at both levels showed a high positive correlation(r=0.971 at 08:00 and r=0.961 at 20:00,P＜0.01).Seasonally,surface layer temperatures warmed in all four seasons,with the most significant increase in winter,while 500 hPa warming was primarily concentrated in autumn.Seasonal correlations varied,with the strongest correlation at 08:00 in summer(r=0.831)and at 20:00 in spring(r=0.857).On a monthly scale,correlations were generally higher in summer and autumn,while winter(especially at 08:00)exhibited weaker correlations due to the influence of radiative temperature inversion.This study reveals the spatiotemporal characteristics of thermal coupling between the near-surface and lower troposphere under the unique plateau terrain of the Xining region,providing a scientific basis for regional climate research and data quality control and interpolation in meteorological operations.关键词
西宁/气温变化/500 hPa/相关性分析/高原气候Key words
Xining/temperature variation/500 hPa/correlation analysis/plateau climate分类
社会科学引用本文复制引用
郭航,葛友荣,张国欣,杨柏松..西宁地区近地面层与500 hPa气温变化特征及相互关系研究[J].绿洲农业科学与工程,2026,11(2):86-94,9.基金项目
西宁地区近地面层气温与高空温度的影响(XNMS2024-02) Impact of Near-Surface Temperature and Upper Atmosphere Temperature in the Xining Region(XNMS2024-02) （XNMS2024-02）
