数值模式中辐射参数化方案的对比试验 Ⅰ:干模式计算结果

应用一个简化的长波辐射和短波辐射参数化方案，与郭晓岚—钱永甫原有辐射参数化方案进行了对比，分析了它们对100hPa，300hPa,500hPa，700hPa及海平面气压场、高度场、温度场及辐射加热率计算结果的影响，发现，两者结果相当一致，高度场、温度场的相关系数都能达到0．9以上，短波辐射加热率的相关系数也都在0．8—0．9之间。简化方案具有计算快捷，节约机时的优点，积分模式时间720小时（5x86／133微机），所需机时约比原方案减少33％。

THE COMPARATIVE EXPERIMENT OF RADIATION PARAMETERIZATION SCHEME IN NUMERICAL MODEL

Comparing the simplified radiation scheme with the original scheme by Kuo and Qian,the simulated results of height fields,temperature fields,correlatiom coefficient of 100, 300,500, 700hpa and surface pressure field are analysted. It is found that results of the simplifiedscheme are consistent with that of original results. The correlation coefficient of height andtemperature fields is more 0. 9 and that of short--wave radiation heating ratio is also between0. 8 and 0. 9. The simplified scheme has advantages of economical computer time,needs only67 % computer time of the original scheme for per 720 model hours (5x86/133 micro-computer).