本文根据火山灰粒子的辐射光学特性,计算了火山灰粒子和平流层本底的辐射光学参数。另外,采用大气多次散射的辐射传输方程,计算了火山喷发对大气辐射变温的影响效果。结果表明,与平流层本底相比,火山灰粒子具有很强的吸收性。火山喷发使平流层吸收太阳辐射增温,并使到达对流层和地面的太阳辐射减少;同时,对大气长波冷却率的影响甚微。

According to the radiation-optical quality of volcanic ash we calculated the parameter of radiation-optic. Meanwhile, by using the equation of atmospheric radiation transfer, and the change rate of temperature was calculated.The result is as follows. The absorbant ability of volcanic ash is stronger than it of the background of stratosphere. Valcanic eruption witl heat the stratosplere by absorbing solar radiation, decrease the solar radiation on the earth surface, and have no effect on long wave radiative cooling rate.