...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Paleoceanography >Rapid switch-like sea ice growth and land ice–sea ice hysteresis
【24h】

Rapid switch-like sea ice growth and land ice–sea ice hysteresis

机译：像开关一样的快速海冰生长和陆地冰海冰滞后

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Rapid and extensive growth of sea ice cover was suggested to play a major role in the sea ice switch mechanism for the glacial cycles as well as on shorter millennial scales [Gildor and Tziperman, 2000]. This mechanism also predicts a hysteresis between sea ice and land ice, such that land ice grows when sea ice cover is small and withdraws when sea ice cover is more extensive. The switch-like sea ice growth and the hysteresis were previously demonstrated using a simple, highly idealized box model. In this work we demonstrate a switch-like sea ice behavior as well as the sea ice–land ice hysteresis using a coupled climate model that is continuous in the latitudinal dimension. It is shown that the switch-like sea ice growth occurs when the initial meridional atmospheric temperature gradient is not too strong. It is also shown that the meridional extent to which sea ice grows in a switch-like manner is not affected by the intensity of the thermohaline circulation, which does, however, influence the climate cooling that is needed to trigger such rapid sea ice growth.
机译：有人认为，海冰覆盖物的快速和广泛增长在冰川周期以及更短的千年尺度上的海冰转换机制中起着重要作用[Gildor and Tziperman，2000]。该机制还预测了海冰与陆冰之间的滞后现象，因此，当海冰覆盖面积较小时，陆冰会增长，而当海冰覆盖范围较大时，陆冰会撤回。以前使用简单，高度理想的盒子模型演示了类似开关的海冰生长和滞后现象。在这项工作中，我们使用在纬度维度上连续的耦合气候模型，演示了类似开关的海冰行为以及海冰-陆冰滞后现象。结果表明，当初始子午大气温度梯度不太强时，会出现开关状海冰的生长。还表明，海冰以开关状方式生长的子午程度不受热盐环流强度的影响，但是，这确实会影响触发这种快速海冰生长的气候降温。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号