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Sea Ice Formation in a Coupled Climate Model Including Grease Ice

机译:在耦合的气候模型的海冰形成包括油脂冰

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摘要

Sea ice formation processes occur on subgrid scales, and the detailed physics describing the processes are therefore not generally represented in climate models. One likely consequence of this is the premature closing of areas of open water in model simulations, which may result in a misrepresentation of heat and gas exchange between the ocean and atmosphere. This work demonstrates the implementation of a more realistic model of sea ice formation, introducing grease ice as a wind and oceanic stress-dependent intermediary state between water and new sea ice. We use the fully coupled land-atmosphere-ocean-sea ice model, HadGEM3-GC3.1 and perform a three-member ensemble with the new grease ice scheme from 1964 to 2013. Comparing our sea ice results with the existing ensemble without grease ice formation shows an increase in sea ice thickness and volume in the Arctic. In the Antarctic, including grease ice processes results in large local changes to both simulated sea ice concentration and thickness, but no change to the total area or volume.
机译:SEA冰形成过程发生在底粒径上,并且描述了描述该过程的详细物理通常不在气候模型中表示。其中一个可能的结果是模型模拟中的开放水域的过早关闭,这可能导致海洋和大气之间的热量和气体交换的歪曲。这项工作展示了一种更现实的海冰模型模型,将油脂冰作为水和新海冰之间的风和海洋压力依赖中介状态。我们使用完全耦合的土地 - 大气 - 海洋海洋冰型号,哈格米3-GC3.1,并于1964年至2013年使用新的油脂冰计划进行三个成员集合。通过没有油脂冰的现有集合将我们的海冰成绩与现有的集合进行比较形成显示了北极海冰厚度和体积的增加。在南极,包括润滑脂冰过程导致局部局部变化大,模拟海冰浓度和厚度,但没有变化到总​​面积或体积。

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  • 来源
    《Oceanographic Literature Review》 |2020年第10期|2095-2095|共1页
  • 作者单位

    Department of Physics University of Otago Dunedin New Zealand;

    Department of Physics University of Otago Dunedin New Zealand;

    Department of Physics University of Otago Dunedin New Zealand;

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  • 正文语种 eng
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