【摘要】 本文利用一个一维辐射传输模式，分析了模式垂直分层对辐射通量密度和加热率计算结果的影响，以示在辐射计算方案的应用中选择合理的垂直分层的必要性。结果表明：长波辐射通量和加热率对垂直分层的改变反映敏感；辐射通量最大偏差出现在对流层中层，以中纬度模式大气为例，其值为１４Ｗ／ｍ２（相对偏差６％）；长波冷却率的偏差在低层比较明显，最大可达１０℃／ｄａｙ；在高原地区，垂直分层对近地层加热率的影响更为明显，偏差最大可达２８℃／ｄａｙ，甚至会出现符号上的差别。更多还原

【Abstract】 A one-dimensional radiative transfer model has been used to study the impact of the vertical layers in the model on the computed radiative fluxes and heating rates for indicating the necessary of selecting the proper vertical layers in the application of the radiative transfer codes It is shown that IR radiative fluxes and heating rates are sensitive to the change of the vertical layers The maximum deviation of the radiative flux occurs in the middle layers of the troposphere For the middle-latitude atmosphere, the value is 14 W/m 2 (relative deviation 6%) The deviation of IR cooling rate is more manifestative in the lower layers and its maximum value can reach 1 0℃/day The vertical layers have a much more obvious impact on the heating rates in the surface layers over the Plateau region where the maximum deviation can reach 2 8℃/day, and even may have the different signs更多还原