The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments
The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments
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DOI：
10.1007/s003820050010
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发表时间：
2000-02-01
期刊：
影响因子：
4.6
通讯作者：
Wood, RA
中科院分区：
文献类型：
--
作者：
Gordon, C;Cooper, C;Wood, RA
结果来自Hadley中心耦合模式（HadCM3）的一个新版本，该模式在模拟中不需要通量调整来防止大的气候漂移。该模式既有改进的大气成分，也有海洋成分。特别是，海洋具有1.25度x 1.25度的水平分辨率，与具有较粗分辨率海洋分量的早期版本相比，海洋热输送的模拟得到了相当大的改进。该模型在耦合之前没有任何自旋上升过程，从观测到的初始条件开始，模拟已经运行了400多年。海表温度和海冰的模拟结果是稳定和真实的。全球平均海温的趋势小于0.009℃/世纪。在某种程度上，改进的模拟是大气和海洋模式热收支更大兼容性的结果。将大气模式的地表热量和动量收支与基于船舶的气候估算值进行了比较。同样，将海洋模式对向极地热输送的模拟与全球许多区域的直接船舶观测进行了比较。尽管观测数据集存在局限性，但结果表明，耦合模型能够再现观测到的热收支的许多方面。
Results are presented from a new version of the Hadley Centre coupled model (HadCM3) that does not require flux adjustments to prevent large climate drifts in the simulation. The model has both an improved atmosphere and ocean component. In particular, the ocean has a 1.25 degrees x 1.25 degrees degree horizontal resolution and leads to a considerably improved simulation of ocean heat transports compared to earlier versions with a coarser resolution ocean component. The model does not have any spin up procedure prior to coupling and the simulation has been run for over 400 years starting from observed initial conditions. The sea surface temperature (SST) and sea ice simulation are shown to be stable and realistic. The trend in global mean SST is less than 0.009 degrees C per century. In part, the improved simulation is a consequence of a greater compatibility of the atmosphere and ocean model heat budgets. The atmospheric model surface heat and momentum budget are evaluated by comparing with climatological ship-based estimates. Similarly the ocean model simulation of poleward heat transports is compared with direct ship-based observations for a number of sections across the globe. Despite the limitations of the observed datasets, it is shown that the coupled model is able to reproduce many aspects of the observed heat budget.