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首页> 外文期刊>Oceanography >Sea Surface Salinity Observations with Lagrangian Drifters in the Tropical North Atlantic During SPURS Circulation, Fluxes, and Comparisons with Remotely Sensed Salinity from Aquarius
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Sea Surface Salinity Observations with Lagrangian Drifters in the Tropical North Atlantic During SPURS Circulation, Fluxes, and Comparisons with Remotely Sensed Salinity from Aquarius

机译：SPURS环流，通量以及与水瓶座遥感盐度的比较，热带北大西洋的拉格朗日漂流器的海面盐度观测

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摘要

The Global Drifter Program deployed a total of 144 Lagrangian drifters drogued at 15 m depth, including 88 equipped with salinity sensors, in support of the first Salinity Processes in the Upper-ocean Regional Study (SPURS-1) in the subtropical North Atlantic Ocean with the goal of measuring salt fluxes associated with surface currents. The quality-controlled data set consists of 996,583 salinity observations collected between August 2012 and April 2014. A comparison of the drifter salinities with Aquarius satellite sea surface salinity (SSS) data shows that the lifespan of the salinity sensor fitted to the drifters is of the order of one year. The salinity and velocity data from the drifters were used to validate salt transport divergence computed with satellite products, with satellite salinity taken from the standard Aquarius v3.0 data set. The results indicate good agreement between the two independent methods, and also demonstrate that the effect of the eddy field combined with SSS variability at the surface dominates the signal. SSS variability within spatial bins as compared to Aquarius-beam footprints measured by drifters can be in excess of 0.1 psu. This result suggests that careful evaluation of the representation error is required when single-point in situ measurements, such as those collected by Argo floats, are used to validate spatially averaged Aquarius salinity data.
机译：全球漂流者计划共部署了144个拉格朗日漂流者，其悬垂深度为15 m，包括88个装有盐度传感器的漂流者，以支持北亚热带副热带地区上海洋区域研究（SPURS-1）中的第一个盐度过程。测量与表面电流相关的盐通量的目标。质量控制的数据集包括2012年8月至2014年4月之间收集的996,583盐度观测值。流浪者盐度与Aquarius卫星海面盐度（SSS）数据的比较表明，安装在流浪者上的盐度传感器的使用寿命为一年的订单。来自流浪者的盐度和速度数据用于验证卫星产品计算出的盐分运输散度，卫星盐度取自标准Aquarius v3.0数据集。结果表明两种独立方法之间的良好一致性，并且还表明涡流场的影响与表面的SSS变异性相结合主导了信号。与流浪者测量的水瓶座足迹相比，空间垃圾箱内的SSS变异性可能超过0.1 psu。该结果表明，当单点原位测量（例如，由Argo浮标收集的测量）用于验证空间平均水瓶座盐度数据时，需要仔细评估表示误差。

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  • 来源
    《Oceanography》 |2015年第1期|96-105|共10页
  • 作者

    Centurioni Luca R.; Hormann Verena; Chao Yi; Reverdin Gilles; Font Jordi; Lee Dong-Kyu;

  • 作者单位

    Univ Calif San Diego, Scripps Inst Oceanog, Global Drifter Program, La Jolla, CA 92093 USA;

    Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA;

    Remote Sensing Solut, Pasadena, CA USA|Univ Calif Los Angeles, Joint Inst Reg Earth Syst Sci & Engn, Los Angeles, CA USA;

    Univ Paris 06, Inst Pierre Simon Laplace, CNRS, IRD,MNHN,Unite Mixte Rech 7159,LOCEAN Inst,Res, Paris, France;

    Inst Ciencies Mar CMIMA CSIC, Barcelona, Spain;

    Pusan Natl Univ, Dept Oceanog, Busan, South Korea;

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