短期气候模式中积云参数化方案的选取及其效能的检验  

Study on the Chosen Parameterized Schemes of Cumulus Convection and the Test of their Simulated Effects in the Short-Term Climate

作　　者：平凡[1] 高守亭[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《中国科学院研究生院学报》2004年第3期366-373,共8页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：国家自然科学基金重点项目 ( 4 0 0 3 5 0 10 );中国科学院海外杰出学者基金项目 ( 2 0 0 2 1 2 )资助

摘　　要：利用中国国家气候中心的全球T63谱模式 ,以中国典型的旱涝年夏季 ( 6— 8月 )降水为检验的个例 ,分别采取原来模式中的Kuo型积云参数化方案和UKMO Unified的Gregory积云参数化方案 ,进行了整个夏季的逐月降水预报的对比试验 .结果表明 ,Gregory质量通量方案能给出较Kuo型方案更加合理的降水落区 ,并且对降水量的预报也有显著的改进 .从整个夏季的预报来看 ,Gregory参数化方案较Kuo型方案能更好地模拟出中国区域降水的总体趋势 .但是与实况相比 ,仍存在着一定的误差 。The NCC T63L20 model of the National Climate Center, China Meteorological Administration is employed to simulate the summer (June—August) flood during the characteristic years. This model utilizes Kuo type parameterized scheme and Gregory parameterized scheme respectively. The simulations show that the Gregory parameterized scheme, which is still used in the United Kingdom Meteorological Office routine model, simulates more reasonable rainfall area amount and distribution compared to the Kuo type scheme. Moreover, the Gregory scheme better simulates the rainfall amount than the Kuo type scheme. On the whole, the Gregory scheme provides a good simulation of the main features of the seasonal precipitation and general circulation in China, although the simulated result still exhibits some departures from the observations and the scheme needs to be improved further.

关 键 词：积云对流 参数化方案 数值模拟 旱涝预测 

分 类 号：P426.6[天文地球—大气科学及气象学]