GFDL's CM2 Global Coupled Climate Models. Part III: Tropical Pacific Climate and ENSO
GFDL's CM2 Global Coupled Climate Models. Part III: Tropical Pacific Climate and ENSO
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DOI：
10.1175/jcli3631.1
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发表时间：
2006-03
影响因子：
4.9
通讯作者：
A. Wittenberg;A. Rosati;N. Lau;J. Ploshay
中科院分区：
文献类型：
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作者：
A. Wittenberg;A. Rosati;N. Lau;J. Ploshay
从热带太平洋气候和厄尔尼诺-南方涛动（ENSO）的角度描述了两个全球耦合的海洋-大气-陆冰模式[地球物理流体动力学实验室开发的气候模式2.0版（CM2.0）和2.1版（CM2.1）]的多世纪积分。在不进行通量调整的情况下进行积分，提供了对热带太平洋气候的一般真实模拟。模式很好地捕捉了观测到的年平均信风和降水、海面温度、地表热通量、地表流、赤道潜流和地下热结构。一些偏倚是明显的，包括沿赤道的冷海温偏倚，沿南美洲海岸的暖偏倚，以及相对于观测的信风向西延伸。沿赤道，模式显示出强劲的、向西传播的海温和纬向风年循环。在北方春季，赤道以南的过度降雨与不切实际的气温有关。
Abstract Multicentury integrations from two global coupled ocean–atmosphere–land–ice models [Climate Model versions 2.0 (CM2.0) and 2.1 (CM2.1), developed at the Geophysical Fluid Dynamics Laboratory] are described in terms of their tropical Pacific climate and El Nino–Southern Oscillation (ENSO). The integrations are run without flux adjustments and provide generally realistic simulations of tropical Pacific climate. The observed annual-mean trade winds and precipitation, sea surface temperature, surface heat fluxes, surface currents, Equatorial Undercurrent, and subsurface thermal structure are well captured by the models. Some biases are evident, including a cold SST bias along the equator, a warm bias along the coast of South America, and a westward extension of the trade winds relative to observations. Along the equator, the models exhibit a robust, westward-propagating annual cycle of SST and zonal winds. During boreal spring, excessive rainfall south of the equator is linked to an unrealistic rever...