LAUSR

根据对长白山温带森林2011年夏季太阳辐射、植物挥发性有机物(BVOCs)观测数据的分析，基于总辐射能量平衡原理，考虑BVOCs、水汽、散射等因子对于总辐射的衰减作用，发展了实际天气太阳总辐射的经验计算模型。经验模型对地面和大气顶处的太阳总辐射有较好的模拟。以此为基础，提出太阳总辐射和直接辐射表的标定方法。利用该经验模型，计算了总辐射对于BVOCs、水汽、散射等因子变化的敏感性。敏感性试验表明，实际当前条件下，总辐射对散射因子的变化最敏感，然后是水汽和BVOCs因子。新的标定方法比目前标定的方法有显著优势，具有潜在的应用价值。 Based on analysis of solar global radiation, biogenic organic compounds (BVOCs) in Changbai Mountain temperate forest in 2011 summer and principle of solar global radiation balance, empir-ical models of solar global radiation under all sky conditions have been developed, when the at-tenuation of solar global radiation caused by BVOCs, water vapor and scattering factors were con-sidered. Good agreements between simulated and observed values were obtained at the ground and the top of atmosphere (TOA). On the basis of this, a calibration method for solar global and di-rect sensors was put forward. The sensitivity test of solar global radiation to the change of BVOCs, water vapor and scattering factors were investigated. Under realistic atmospheric conditions, the solar global radiation was more sensitive to changes in scattering factor than to changes in water vapor or BVOCs. This new calibration method has some advantages and potential applications.