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首页> 外文期刊>Journal of geophysical research. Earth Surface: JGR >Investigation of land ice-ocean interaction with a fully coupled ice-ocean model: 2. Sensitivity to external forcings
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Investigation of land ice-ocean interaction with a fully coupled ice-ocean model: 2. Sensitivity to external forcings

机译：利用完全耦合的冰洋模式研究陆地冰洋相互作用：2.对外部强迫的敏感性

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摘要

A coupled ice stream-ice shelf-ocean cavity model is used to assess the sensitivity of the coupled system to far-field ocean temperatures, varying from 0.0 to 1.8°C, as well as sensitivity to the parameters controlling grounded ice flow. A response to warming is seen in grounding line retreat and grounded ice loss that cannot be inferred from the response of integrated melt rates alone. This is due to concentrated thinning at the ice shelf lateral margin, and to processes that contribute to this thinning. Parameters controlling the flow of grounded ice have a strong influence on the response to sub-ice shelf melting, but this influence is not seen until several years after an initial perturbation in temperatures. The simulated melt rates are on the order of that observed for Pine Island Glacier in the 1990s. However, retreat rates are much slower, possibly due to unrepresented bedrock features.
机译：耦合的冰流-冰架-海洋腔模型用于评估耦合系统对从0.0到1.8°C的远场海洋温度的敏感性，以及对控制地面冰流的参数的敏感性。在接地线后退和接地冰流失中看到了对变暖的响应，这不能仅从综合融化率的响应中得出。这是由于在冰架侧缘集中的稀疏化以及导致这种稀疏化的过程。控制地面冰流的参数对对子冰架融化的响应有很大的影响，但这种影响要等到最初的温度波动几年后才能看到。模拟的融化速率与1990年代Pine Island Glacier观测到的融化速率大致相同。但是，退缩速度要慢得多，这可能是由于未显示的基岩特征所致。

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