干旱区地理2024，Vol.47Issue(8)：1304-1313,10.DOI:10.12118/j.issn.1000-6060.2024.140
基于多源数据的昆仑山北坡地表太阳辐射调查评估
Investigation and evaluation of surface solar radiation on the north slope of Kunlun Mountains based on multi-source data
摘要
Abstract
Surface solar radiation is pivotal in the global energy balance and serves as the primary driver of cli-mate change and the hydrological cycle.Despite its significance,the complexity of solar radiation components and the prohibitive cost of measurement instruments have resulted in a scarcity of long-term,reliable observation data in high-altitude mountain areas.This study utilizes the high-resolution homogeneous grid dataset of Chinese land surface climate observations alongside the ERA5 reanalysis radiation dataset to analyze the variation charac-teristics of surface solar radiation at different time scales over the north slope of the Kunlun Mountains from 1984 to 2023.Moreover,it employs the geographical detector model to examine the relationship between surface solar radiation and atmospheric factors.The findings indicate that:(1)The average annual surface solar radiation on the north slope of the Kunlun Mountains exhibited a significant decreasing trend during the study period,with a rate of-1.24 W·m-2·(10a)-1.Seasonally,the decline was most pronounced during summer.The monthly average surface solar radiation increased initially,peaking in June,before subsequently declining.(2)The spatial distribu-tion of surface solar radiation on the north slope of the Kunlun Mountains gradually decreases from south to north.The variation trends differ between the east and west;except in winter,the eastern decline rate exceeded that of the west throughout the year,including during spring,summer,and autumn.(3)Single-factor detection re-sults reveal that the explanatory capabilities of atmospheric factors on the spatial differentiation of surface solar radiation vary,with water vapor demonstrating a higher explanatory ability(q=0.90).These findings confirm that water vapor is a critical factor influencing the spatial distribution of solar radiation on the north slope of the Kun-lun Mountains.关键词
地表太阳辐射/时空变化/影响因素/昆仑山北坡Key words
surface solar radiation/spatiotemporal variation/influencing factors/north slope of Kunlun Mountains引用本文复制引用
张璐,孙美平,闫欣,王伟生,范蕊谊..基于多源数据的昆仑山北坡地表太阳辐射调查评估[J].干旱区地理,2024,47(8):1304-1313,10.基金项目
第三次新疆综合科学考察——昆仑山北坡区域水文要素变化调查(2021xjkk0101) （2021xjkk0101）
国家自然科学基金(42161027)资助 （42161027）
