城市气溶胶对边界层热量收支的影响

本文利用长、短波辐射模式和地面能量平衡模式，计算了烟雾层状况下的边界层和地面热量收支情况，计算表明，烟地务层的全天辐射效应使低层大气上部辐射能量收入为正，中下部辐射能量收入为负，总的结果是使低层大气稍稍冷却并使稳定增加，计算还表明，烟雾层造成的地面接收短波辐射能量的减少量可由大气逆辐射的增加量来补偿，烟雾层使得地面温度振幅变小。

THE INFLUENCES OF URBAN AEROSOLS ON HEAT BUDGET IN BOUNDARY LAYER

By using longwave and shortwave radiation models and a ground energy balance model,the heat budget in the boundary layer and the ground surface under the smog layer have been calculated. The results show that the all-day radiative effect of the smog layer makes the incoming radiative energy in the upper part of the low layer to be positive,and the middle and lower part to be negative. The total result is cooling slightly air of the low layer and increasing the stability. The computations also indicate that the attenuation of the shortwave radiation reaching ground due to the smog layer can be compensated by the increment of longwave radiation,and the smog layer makes the amplitude of ground surface temperature to be decreased.