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CAPTURING FRESH LAYERS WITH THE SURFACE SALINITY PROFILER

机译:使用表面盐度分布图捕获新鲜层

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摘要

During the second Salinity Processes in the Upper-ocean Regional Study (SPURS-2) field experiments in 2016 and 2017 in the eastern tropical Pacific Ocean, the surface salinity profiler (SSP) measured temperature and salinity profiles in the upper 1.1 m of the ocean. The SSP captured the response of the ocean surface to 35 rain events, providing insight into the generation and evolution of rain-formed fresh layers. This paper describes the measurements made with the SSP during SPURS-2 and quantifies the fresh layers in terms of their vertical salinity gradients between 0.05 m and 1.1 m, Delta S1.1-0.05m. For the 35 rain events sampled with the SSP in 2016 and 2017, the maximum value of Delta S1.1-0.05m is well correlated with the accumulated rainfall. The maximum value of Delta S1.1-0.05m is shown to be linearly proportional to the maximum rain rate and inversely proportional to the wind speed. This wind speed-dependent relationship shows a high degree of scatter, reflecting that the vertical salinity gradient formed during any individual rain event depends on the complex interaction between the local ocean dynamics and the highly variable forcing from rain and wind.
机译:在2016年和2017年东部热带太平洋上层海洋研究(SPURS-2)的第二次盐度过程中,地表盐度剖面仪(SSP)测量了海洋上端1.1 m的温度和盐度剖面。 SSP捕获了海洋表面对35次降雨事件的响应,从而提供了对降雨形成的新鲜层的产生和演化的深入了解。本文介绍了在SPURS-2期间用SSP进行的测量,并根据新鲜层的垂直盐度梯度(介于0.05 m和1.1 m之间,Delta S1.1-0.05m)对新鲜层进行了量化。在2016年和2017年用SSP采样的35个降雨事件中,Delta S1.1-0.05m的最大值与累积降雨有很好的相关性。 Delta S1.1-0.05m的最大值与最大降雨率成线性比例,与风速成反比。这种与风速有关的关系显示出高度的分散性,反映出在任何单个降雨事件中形成的垂直盐度梯度取决于当地海洋动力学与降雨和风的高变强迫之间的复杂相互作用。

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  • 来源
    《Oceanography》 |2019年第2期|76-85|共10页
  • 作者单位

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

    Univ Washington, Appl Phys Lab, Seattle, WA 98105 USA;

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