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VIIRS-derived SST at the Naval Oceanographic Office: From evaluation to operation

机译：海军海洋局VIIRS衍生的SST：从评估到运营

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摘要

The Naval Oceanographic Office (NAVOCEANO) produces Sea Surface Temperature (SST) retrievals from satellite data. NAVOCEANO also obtains satellite-derived SST data sets from other groups. To provide consistency for assimilation into analyses and models, all the SST data sets are evaluated for their accuracy with the same methodology. In this paper, the focus is SST derived from the Visible Infrared Imaging Radiometer Suite (VIIRS) sensor on board the Suomi National Polar-orbiting Partnership (NPP) satellite. Of particular interest is the evaluation of NAVOCEANO-produced SST with its NAVOCEANO Cloud mask, the VIIRS cloud mask, and VIIRS Environmental Data Record SST. The evaluation results show that these products are in some ways comparable, with similar strengths and weaknesses, although they target different customers. For comparison, the reliability results for the Meteorological Operational (METOP-A) satellite-derived SST, which is a NAVOCEANO operational product, are presented. As a by-product of the NAVOCEANO VIIRS SST evaluation, the non-linear SST (NLSST) equations used to derive the SST values were found to be less than optimal, depending on the unit of the field temperature term. NAVOCEANO VIIRS SST employs an expanded NLSST equation, which in effect refines the approximation of the gamma term by adding an offset. In view of the evaluation results, NAVOCEANO VIIRS SST became operational at the end of January 2013.
机译：海军海洋局（NAVOCEANO）从卫星数据中提取海表温度（SST）。 NAVOCEANO还从其他组获得了卫星衍生的SST数据集。为了提供同化到分析和模型中的一致性，使用相同的方法对所有SST数据集的准确性进行评估。在本文中，重点是来自Suomi国家极地轨道合作伙伴（NPP）卫星上的可见红外成像辐射计套件（VIIRS）传感器的SST。尤其值得关注的是用其NAVOCEANO云面罩，VIIRS云面罩和VIIRS环境数据记录SST对NAVOCEANO生产的SST进行评估。评估结果表明，尽管这些产品针对不同的客户，但它们在某些方面具有可比性，具有相同的优点和缺点。为了进行比较，给出了NAVOCEANO的气象业务（METOP-A）卫星SST的可靠性结果。作为NAVOCEANO VIIRS SST评估的副产品，根据现场温度项的单位，发现用来推导SST值的非线性SST（NLSST）方程式不理想。 NAVOCEANO VIIRS SST使用扩展的NLSST方程，该方程实际上通过添加偏移量来完善伽玛项的近似值。根据评估结果，NAVOCEANO VIIRS SST于2013年1月底投入运营。

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