基于多传感器数据的新疆太阳辐射估算及其时空分布特征分析

Estimation and seasonal variation of solar radiation in Xinjiang based on a multi-sensor data approach

融合由Terra/MODIS与FY-3卫星数据反演得到的气溶胶产品,利用基于大气辐射传输原理建立的地面太阳直射辐射的反演模型,计算了2011年新疆地区的逐时太阳直射辐射分布状况。然后,选择乌鲁木齐、阿勒泰、喀什、和田与哈密5个气象站为代表,分析了新疆地区太阳辐射资源的年度时空分布特征。结果表明:利用多遥感传感器数据能较好地反演新疆地区的太阳直射辐射,东疆的直射辐射最强,新疆北部次之,新疆西南部与中部相对较弱,且随季节变化特征明显,表现为夏>春>秋>冬,最高值一般出现在夏季的6月或7月,最低值为12月。

The MODIS aerosol product was used with the aerosol derived from the FY- 3A satellite data to calculate the hourly solar direct radiation of Xinjiang in 2011 using an inversion model based on the atmospheric radiative transfer process modelling. On the basis of inversed results,the meteorological stations of Urumqi,Alti,Kashi,Hetian and Hami were selected to analyze the spatio- temporal variations of the annual solar direct radiation resource of Xinjiang. The result indicates that the multiple remote sensors data enable quick and accurate estimation of solar direct radiation,which is valuable for understanding the spatial,monthly and seasonal variations of Xinjiang＇s solar radiation energy resources. The distribution patterns showed that the DNI was the strongest in eastern Xinjiang,next in northern Xinjiang,and the lowest in mid and southwestern Xinjiang,with a seasonal variation of summer spring autumn winter,and the highest values of DNI occurred in June or July and the lowest in December,2011.