大规模的海冰 - - 表面温度变化与大西洋南部翻转循环有关
Petru Vaideanu1,2, Christian Stepanek1, Mihai Dima1,2
1Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany.
PloS one
|August 30, 2023
概括
海冰和海面温度 (SST) 对全球气候至关重要. 分析观测和建模数据揭示了北极海冰度 (SIC) 和大西洋SST之间的联系,它们受到大西洋循环的影响,如大西洋南部翻转循环 (AMOC).
科学领域:
- 气候科学 气候科学
- 海洋学 海洋学 海洋学
- 极地研究 极地研究
背景情况:
- 海冰通过各种反机制显著影响极地和全球气候.
- 了解海冰度 (SIC) 和海面温度 (SST) 之间的相互作用对于气候建模至关重要.
研究的目的:
- 解开不同强迫因素对结合的海冰和海面温度变化的影响.
- 为了确定北极海冰,大西洋SST和主要的海洋和大气变化模式之间的联系.
主要方法:
- 分析了最新的观察,重建和建模的海冰度 (SIC) 和海面温度 (SST) 数据.
- 应用法定相关性分析 (CCA) 来识别合变性模式.
主要成果:
- 确定了与北极SIC-大西洋SST变异性相结合的独特对,与大西洋南部翻转循环 (AMOC) 和北大西洋振荡 (NAO) 相关.
- 一种主导模式突出了北极和南极海冰对AMOC变化的对比反应.
- 模型结果表明,合的SST-SIC模式与海洋循环变化有关.
结论:
- 在气候模型中,对AMOC诱导的SST-SIC合变量的准确表示对于了解过去,现在和未来的海冰演变至关重要.
- 海洋循环,特别是AMOC,在推动海冰和SST变化方面发挥着关键作用.
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