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北大西洋热传输融合源于区域能源预算,使用不同的海洋热量含量估计
B Meyssignac1, S Fourest1, Michael Mayer2,3
1Université de Toulouse, LEGOS (CNES/CNRS/IRD/UT3), 31400 Toulouse, France.
概括
这项研究使用海洋能源预算估计了北大西洋海洋热传输融合. 结果与现场测量结果有很好的一致性,验证了气候研究的方法.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 地球系统科学 地球系统科学
背景情况:
- 准确估计海洋热传输对于理解全球气候动态至关重要.
- 北大西洋在全球热量分布中发挥着重要作用.
- 以前估计海洋热传输收的方法存在局限性.
研究的目的:
- 用海洋能源预算方法估计北大西洋的海洋热传输趋同.
- 通过RAPID和OSNAP的现场测量来验证这种间接估计.
- 评估该方法在不同海洋热量含量趋势推导中的稳定性.
主要方法:
- 利用卫星高度测量和太空重力测量来得出海洋热量含量趋势.
- 从大气能量传输和重新分析数据推断的净表面能量流.
- 在RAPID (26.5°N) 和OSNAP (53°-60°N) 路段之间进行综合间接估计以进行验证.
主要成果:
- 北大西洋海洋能源预算在RAPID和OSNAP段之间被关闭到±0.25 PW.
- 平均海洋热传输收率估计为0.58 ±0.25 PW,与观察到的传输量保持一致.
- 年间的变化与现场数据相对相当一致 (年期时间序列的相关性为0.54,半年期时间序列的相关性为0.67).
结论:
- 海洋能源预算方法提供了北大西洋海洋热传输收的可靠估计.
- 这些发现在各种估计海洋热量含量趋势的方法中都很强大.
- 这项研究证实了海洋在气候调节中的作用的关键组成部分.
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