Radiative and Dynamical Feedbacks over the Equatorial Cold Tongue: Results from Nine Atmospheric GCMs
Radiative and Dynamical Feedbacks over the Equatorial Cold Tongue: Results from Nine Atmospheric GCMs
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DOI：
10.1175/jcli3835.1
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发表时间：
2005-01
影响因子：
4.9
通讯作者：
De-Zheng Sun;Tao Zhang;C. Covey;S. Klein;W. Collins;J. Hack;J. Kiehl;G. Meehl;I. Held
中科院分区：
文献类型：
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作者：
De-Zheng Sun;Tao Zhang;C. Covey;S. Klein;W. Collins;J. Hack;J. Kiehl;G. Meehl;I. Held
赤道太平洋是一个负反馈强烈的区域。然而，耦合大气环流模式（GCMs）已经表现出一种倾向，发展一个显着的SST偏差在该地区，这表明在耦合模式不切实际的敏感性小的能量通量误差，不可避免地发生在个别模式组件。这种“超敏反应”在耦合模型中表现出来的可能性是由于低估了该区域负反馈的强度吗？在此基础上，利用赤道太平洋的年际变化，对9个大气环流模式（AGCMs）的反馈进行了定量分析，并与相应的观测结果进行了比较。这九个AGCM是NCAR社区气候模式版本1（CAM1），NCAR社区气候模式版本2（CAM2），NCAR社区气候模式版本3（CAM3），NCAR T85分辨率的CAM3，NASA季节到年际预测项目（NSIPP）大气模式，Hadley大气模式，NCAR社区气候模式版本3（CAM3），NCAR社区气候模式版本3（CAM3），NCAR社区气候模式版本3（CAM3），NCAR社区气候模式版本1（CAM1），NCAR社区气候模式版本2（CAM2），NCAR社区气候模式版本3（CAM3）。
Abstract The equatorial Pacific is a region with strong negative feedbacks. Yet coupled general circulation models (GCMs) have exhibited a propensity to develop a significant SST bias in that region, suggesting an unrealistic sensitivity in the coupled models to small energy flux errors that inevitably occur in the individual model components. Could this “hypersensitivity” exhibited in a coupled model be due to an underestimate of the strength of the negative feedbacks in this region? With this suspicion, the feedbacks in the equatorial Pacific in nine atmospheric GCMs (AGCMs) have been quantified using the interannual variations in that region and compared with the corresponding calculations from the observations. The nine AGCMs are the NCAR Community Climate Model version 1 (CAM1), the NCAR Community Climate Model version 2 (CAM2), the NCAR Community Climate Model version 3 (CAM3), the NCAR CAM3 at T85 resolution, the NASA Seasonal-to-Interannual Prediction Project (NSIPP) Atmospheric Model, the Hadley ...