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Observing the Galapagos-EUC Interaction: Insights and Challenges

机译:观察加拉帕戈斯-欧洲共同体的互动:见解和挑战

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摘要

Although sustained observations yield a description of the mean equatorial current system from the western Pacific to the eastern terminus of the Tropical Atmosphere Ocean (TAO) array, a comprehensive observational dataset suitable for describing the structure and pathways of the Equatorial Undercurrent (EUC) east of 95°W does not exist and therefore climate models are unconstrained in a region that plays a critical role in ocean-atmosphere coupling. Furthermore, ocean models suggest that the interaction between the EUC and the Galapagos Islands (~92°W) has a striking effect on the basic state and coupled variability of the tropical Pacific. To this end, the authors interpret historical measurements beginning with those made in conjunction with the discovery of the Pacific EUC in the 1950s, analyze velocity measurements from an equatorial TAO mooring at 85°W, and analyze a new dataset from archived shipboard ADCP measurements. Together, the observations yield a possible composite description of the EUC structure and pathways in the eastern equatorial Pacific that may be useful for model validation and guiding future observation.
机译:尽管持续的观测可以描述从西太平洋到热带大气海洋(TAO)阵列东端的平均赤道流系统,但一个综合的观测数据集适用于描述赤道以东的赤道暗流(EUC)的结构和路径。 95°W不存在,因此在海洋与大气耦合中起关键作用的区域,气候模型不受限制。此外,海洋模型表明,EUC与加拉帕戈斯群岛(约92°W)之间的相互作用对热带太平洋的基本状态和耦合可变性具有显着影响。为此,作者解释了从1950年代太平洋EUC的发现开始进行的历史测量,分析了85°W赤道TAO系泊的速度测量,并分析了船载ADCP测量的新数据集。总之,这些观测结果可能对赤道东太平洋的EUC结构和路径进行了综合描述,这可能有助于模型验证和指导未来的观测。

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  • 来源
    《Journal of Physical Oceanography》 |2010年第12期|p.2768-2777|共10页
  • 作者单位

    Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts,Woods Hole Oceanographic Institution, MS 23, Woods Hole, MA 02543;

    Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, Maryland;

    Earth System Science Interdisciplinary Center, University of Maryland, College Park, College Park, Maryland;

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