【摘要】 以天文辐射理论模型、有关参数为基础,应用青海DEM模型,Angstrom气候学模式,通过天文辐射、大气透射率的计算,建立了青海高原月、年太阳总辐射栅格模型,模型估算平均相对误差7.40%,模拟效果较好;同时,应用模型估算了青海高原30a(1970-2000年)平均月、年太阳总辐射。结果表明,青海省太阳总辐射年平均值为6771.95MJ/m2,空间分布不均匀。全省年太阳总辐射有3个高值区,1个低值区。高值区位于可可西里地区、柴达木盆地南部、大柴旦西部区域,低值区位于河湟谷地。全省月太阳总辐射地域分布差异较大、季节变化明显,5月和7月为峰值,12月为最低值。5、7、12月全省30a太阳辐射平均值分别为717.24、701.96、352.63MJ/m2。更多还原

【Abstract】 Based on theoretical model of solar radiation and relevant parameters,the annual and monthly solar radiation grid model in Qinghai plateau was established,by using Qinghai DEM model and angstrom climatology model.The model showed good simulated effect with 7.40% relative error.Spatial distribution of monthly and annual mean solar radiation in last 30 years(1970-2000)in Qinghai province was calculated by this model.The results showed that the spatial distribution of solar radiation was uneven with 6771.95 MJ/m2 of mean value.There were 3 high-value regions and 1 low-value region for annual solar radiation in Qinghai province.The high-value regions included Kekexili,the south of Chaidamu basin and the west of Dachaidan,and the low-value region located in Hehuang valley.Spatial distribution of monthly solar radiation was different in regions and seasons.The high-value was in May and July,the low-value was in December,and their mean value was 717.24,701.96 and 352.63 MJ/m2 respectively.更多还原