HIRHAM–NAOSIM 2.0: The upgraded version of the coupled regional atmosphere-ocean-sea ice model for Arctic climate studies
HIRHAM–NAOSIM 2.0: The upgraded version of the coupled regional atmosphere-ocean-sea ice model for Arctic climate studies
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HIRHAM–NAOSIM 2.0：用于北极气候研究的区域大气-海洋-海冰耦合模型的升级版
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发表时间：
2018
期刊：
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通讯作者：
R. Gerdes
中科院分区：
文献类型：
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作者：
W. Dorn;A. Rinke;C. Köberle;K. Dethloff;R. Gerdes
摘要。介绍了一个新版本的北极大气-海洋-海冰耦合模式HIRHAM-NAOSIM。该版本利用了耦合子系统的升级模型组件，包括物理和数值改进以及更高的水平和垂直分辨率，并借助耦合软件YAC修订了耦合程序。根据基于观测的数据集评估模型的性能，并与以前的版本进行比较。1979-2016年期间的整体模拟显示，北极海冰在所有季节都更厚，并且比以前的版本更接近观测值。海冰范围和近地表气温的冬季偏差减少，而夏季偏差与以前的版本相似。讨论了当前模型配置的问题和潜在的纠正措施以及进一步的发展。
Abstract. A new version of the coupled Arctic atmosphere-ocean-sea ice model HIRHAM-NAOSIM is described. This version utilizes upgraded model components for the coupled subsystems, which include physical and numerical improvements and higher horizontal and vertical resolution, and a revised coupling procedure with the aid of the coupling software YAC. The model performance is evaluated against observationally based data sets and compared with the previous version. Ensemble simulations for the period 1979–2016 reveal that Arctic sea ice is thicker in all seasons and closer to observations than in the previous version. Wintertime biases in sea-ice extent and near-surface air temperatures are reduced, while summertime biases are of similar magnitude as in the previous version. Problematic issues of the current model configuration and potential corrective measures and further developments are discussed.