The Adjustment of the Coupled Climate Model HadGEM1 toward Equilibrium and the Impact on Global Climate
The Adjustment of the Coupled Climate Model HadGEM1 toward Equilibrium and the Impact on Global Climate
复制标题
耦合气候模型HadGEM1的均衡调整及其对全球气候的影响
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. Keen
中科院分区：
文献类型：
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作者：
H. Banks;S. Stark;A. Keen
摘要耦合气候模式通常在大气顶部有一个很小的剩余辐射通量。在英国气象局的气候模型中，哈德利中心全球环境模型第1版（HadGEM 1），它正在进入（加热地球），并在350年的时间内从0.4 W m − 2减少到0.1 W m−2。在HadGEM 1的调整过程中进行检查，并被证明是与过多的热增益。在热带和南大西洋，寒冷、新鲜的南极中层水被异常温暖、含盐的中层水所取代。南极中层水在南大西洋的损失与一个弱的厄古拉斯回折有关。强烈的上升流增强了热带大西洋的侵蚀。北大西洋副极地环流中的暖盐异常向北平流出露。在露头区，海表温度和盐度升高，导致全球平均表面温度升高，海冰面积减少。它调整了大气层的顶部...
Abstract Coupled climate models generally have a small residual radiative flux at the top of the atmosphere. In the Met Office climate model, Hadley Centre Global Environmental Model version 1 (HadGEM1), it is incoming (heating the planet) and reduces over a 350-yr period from 0.4 to 0.1 W m−2. The process of the adjustment in HadGEM1 is examined and is shown to be linked to excessive heat gain. In the tropical and South Atlantic, cold, fresh Antarctic Intermediate Water is replaced by anomalously warm, salty intermediate water. The loss of Antarctic Intermediate Water in the South Atlantic is related to a weak Agulhas retroflection. The erosion is enhanced in the tropical Atlantic by strong upwelling. The warm, salty anomalies are advected northward outcropping in the North Atlantic subpolar gyre. In the outcrop zone, sea surface temperature and salinity are increased, which lead to an increase in global mean surface temperature and a reduction in the sea ice area. This adjusts the top of the atmosphere ...