河西走廊东部太阳总辐射时空分布特征  

Temporal and Spatial Distribution Characteristics of Total Solar Radiation in the East of Hexi Corridor

作　　者：刘莹 任丽雯 杨华 李兴宇 刘明春[3] LIU Ying;REN Liwen;YANG Hua;LI Xingyu;LIU Mingchun(Lanzhou Resources and Environment Vocational and Technical University,Lanzhou 730020;Gansu Weather Modification Office,Lanzhou 730020;Wuwei National Climate Observatory of China Meteorological Administration,Wuwei,Gansu 733000)

机构地区：[1]兰州资源环境职业技术学院,兰州730020 [2]甘肃省人工影响天气办公室,兰州730020 [3]中国气象局武威国家气候观象台,甘肃武威733000

出　　处：《中国农学通报》2023年第20期82-90,共9页Chinese Agricultural Science Bulletin

基　　金：国家自然科学基金项目“尘卷风的大气边界层综合观测及其起沙参数化方案的优化研究”(41875176);甘肃省高等学校产业支撑引导项目“‘一带一路’太阳能高辐射区光能开发潜力与利用效能评估研究及应用”(2020C-34);甘肃省气象局气象科学技术研究重点项目“石羊河流域生态质量气象评价及生态脆弱性研究”(Zd2021-02)。

摘　　要：利用河西走廊东部及周边11个国家自动气象站历年气象观测资料,采用线性倾向分析、MannKendall突变检验分析、基于地面观测资料的统计反演、遥感图像处理软件(ENVI5.2)空间统计分析等方法,分析了总辐射的时空变化特征。结果表明:走廊东部太阳能资源储量丰富且较稳定,年总辐射量在5414.19~6500.36 MJ/m^(2),平均为5947.5 MJ/m^(2),属于太阳能资源较丰富带。总辐射夏季>春季>秋季>冬季。1959—2020年走廊东部总辐射总体呈增加趋势。1959—1989年呈减少趋势,1989年发生突变后呈持续增加趋势,变化趋势与全球和全国大部分区域先“变暗”后“变亮”的过程较为一致。总辐射上、下游呈增加趋势,中游呈减小趋势。春、冬季均为增加趋势,夏、秋季均为减小趋势。总辐射月、日变化呈单峰型,4—8月占全年的55%。2—5月呈增加趋势,8—10月呈减小趋势,年、季、月增幅均为下游最大。总辐射日变化峰值出现在正午12:00—13:00时,10:00—15:00时占日总辐射的73%。总辐射空间分布与纬度、海拔高度有关,北部多、南部少,川区多、山区少。Based on historical data of 11 meteorological observation stations in the east of Hexi Corridor and its surrounding areas,the temporal and spatial characteristics of total solar radiation were analyzed by using linear tendency analysis method,Mann-Kendall method,statistical inversion on surface meteorological observation data,and spatial statistical analysis(by using remote sensing image software ENVI 5.2)method.The results showed that the resource of solar energy in eastern Hexi Corridor was rich and stable.The annual total solar radiation ranged from 5414.19 MJ/m^(2) to 6500.36 MJ/m^(2) and the average was 5947.5 MJ/m^(2),and the grade of solar energy resources belonged to relative abundance.The seasonal order of total radiation was summer>spring>autumn>winter.The total radiation generally increased in the east of Hexi Corridor from 1959 to 2020.The total solar radiation decreased from 1959 to 1989 and increased continuously after a mutation in 1989.The change trend of solar radiation in the east of Hexi Corridor coincided with that of the world,which was firstly decreased and then increased.The total solar radiation increased in the upper and lower reaches of the Shiyang River and decreased in the middle reaches;increased in spring and winter and decreased in summer and autumn.There was one peak time in monthly and daily change,and the total solar radiation from April to August accounted for 55%of that in the whole year.The total solar radiation increased from February to May and decreased from August to October.The annual,quarterly and monthly growth rate in the lower reaches of the Shiyang River was the largest compared with that of the middle and upper reaches.The peak of daily radiation appeared in 12:00—13:00.The total solar radiation from 10:00 to 15:00 accounted for 73%of that in the whole day.The space distribution of total solar radiation was related to altitude and latitude,and was higher in the north and lower in the south,higher in flat land and lower in mountain area.

关 键 词：河西走廊东部 太阳总辐射 气候学计算 空间插值 时空特征 

分 类 号：P456.4[天文地球—大气科学及气象学]