增强风混合和加深混合层在太平洋北极架海域与低夏季海冰
Yuanqi Wang1, Zhixuan Feng2,3, Peigen Lin4
1State Key Laboratory of Estuarine and Coastal Research, School of Marine Sciences, and Institute of Eco-Chongming, East China Normal University, Shanghai, China.
Nature communications
|November 29, 2024
概括
北冰洋海冰的消失改变了上层海洋的动态. 2007年以后,增加的风力混合,而不是冰融,加深了混合层,影响了海洋生态系统.
科学领域:
- 海洋学 海洋学 海洋学
- 北极研究 北极研究
- 气候变化研究 气候变化研究
背景情况:
- 北极海洋正在经历显著的海冰损失,过渡到更薄的季节性冰盖.
- 太平洋北极大陆架对上层海洋动态的影响尚不清楚.
研究的目的:
- 在太平洋北极地区量化夏季上层混合层深度.
- 从1996年到2021年,分析其与海冰和大气强迫有关的演变.
主要方法:
- 使用了水文观测.
- 雇佣的模型重新分析数据.
- 分析了海冰和大气强迫数据.
主要成果:
- 在2007年之前,海冰的消失和变暖导致了较浅的混合层.
- 2007年以后,较长的开水期和增加的风力混合加深了混合层.
- 尽管海冰正在持续下降,但主导力从表面浮力转向风力发生了转变.
结论:
- 北极上层海洋动态发生了转变,风力强迫变得越来越有影响力.
- 这些变化可能会影响海洋生态系统,可能导致秋季浮游植物的繁荣和海洋酸化.
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