由潮和地形波浪介导的环南极地下水形成
Xianxian Han1,2, Andrew L Stewart3, Dake Chen4,5,6
1Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, China.
Nature communications
|March 6, 2024
概括
潮和地形罗斯比波 (TRWs) 同样加快密集架水 (DSW) 的下降,形成更冷的南极底部水 (AABW). 潮仅在坡上至关重要,影响全球海洋循环.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 流体动力学 流体动力学
背景情况:
- 密集的货架水 (DSW) 羽毛对于南极地底水 (AABW) 的形成和海洋碳/热交换至关重要.
- 潮和地形罗斯比波 (TRWs) 已知会影响DSW运输,但它们对AABW属性的综合影响尚不清楚.
研究的目的:
- 调查潮和TRW对DSW下降和AABW形成的综合影响.
- 根据潮和TRW影响,对南极洲周围的密集溢出动态制度进行描述.
主要方法:
- 历史现场观测的综合.
- 数字模型实验. 数字模型实验.
主要成果:
- 潮和TRW在加速DSW下降中发挥了相似的作用,产生了更冷,更密集的AABW.
- 潮对AABW形成的影响只有当大陆斜坡足够以抑制TRW产生时才显著.
- 根据TRW与潮的相对重要性确定了密集溢出的不同动态模式.
结论:
- 潮和TRW等高频过程对于AABW形成和全球翻转循环至关重要.
- 当前的气候模型可能无法充分反映这些高频过程,这可能会影响未来的气候预测.
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