论文部分内容阅读
本文以第六次国际耦合模式比较计划(CMIP6)的大气模式比较(AMIP)试验结果为基础,评估了中国科学院大气物理研究所LASG国家重点实验室所研发的新版本格点大气环流模式GAMIL3对MJO的模拟性能.结果表明:GAMIL3合理地捕捉了MJO的主要特征,如MJO向东传播的信号、MJO的对称和非对称结构、几种对流耦合的赤道波动以及MJO的生命周期.然而,正如大多数CMIP5模型一样GAMIL3低估了MJO的振幅,和东传速度.“,”This study evaluates the performance of the Grid-point Atmospheric Model of IAP LASG,version 3(GAMIL3),in simulating the Madden-Julian Oscillation(MJO),based on the CMIP6(phase 6 of the Coupled Model Intercomparison Project)AMIP(Atmospheric Model Intercomparison Project)simulation.Results show that GAMIL3 reasonably captures the main features of the MJO,such as the eastward-propagating signal in the MJO frequency band,the symmetric and asymmetric structures of the MJO,several convectively coupled equatorial waves,and the MJO life cycle.However,GAMIL3 underestimates the MJO ampli-tude,especially for outgoing longwave radiation,as do most CMIP5 models,and simulates slow eastward propagation.