GHRSST Level 3C Atlantic sub-skin Sea Surface Temperature from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on MSG at 0 degree longitude (GDS V2) produced by OSI SAF for 2017-06-03 (NCEI Accession 0163957)

A Group for High Resolution Sea Surface Temperature (GHRSST) dataset for the Eastern Atlantic Region from the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) on the Meteosat Second Generation (MSG-3) satellites (launched 5 July 2012). The European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), Ocean and Sea Ice Satellite Application Facility (OSI SAF) is producing SST products in near real time from MSG/SEVIRI. SEVIRI level 1.5 data are acquired at Meteo-France/Centre de Meteorologie Spatiale (CMS) through the EUMETSAT/EUMETCAST system. SST is retrieved from the SEVIRI infrared channels (10.8 and 12.0 micrometer) using a multispectral algorithm. Atmospheric profiles of water vapor and temperature from a numerical weather prediction model, together with a radiatiave transfer model, are used to correct the multispectral algorithm for regional and seasonal biases due to changing atmospheric conditions. Every 15 minutes slot is processed at full satellite resolution. The operational products are then produced by remapping over a 0.05 degree regular grid (60S-60N and 60W-60E) SST fields obtained by aggregating all 15 minute SST data available in one hour time, and the priority being given to the value the closest in time to the product nominal hour. The product format is compliant with the GHRSST Data Specification (GDS) version 2.本数据集为搭载于2012年7月5日发射的静止气象卫星第二代（Meteosat Second Generation，MSG-3）平台上的旋转增强型可见光与红外成像仪（Spinning Enhanced Visible and InfraRed Imager，SEVIRI）所获取的东大西洋区域高分辨率海表温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）数据集。 欧洲气象卫星开发组织（European Organization for the Exploitation of Meteorological Satellites，EUMETSAT）下属的海洋与海冰卫星应用设施（Ocean and Sea Ice Satellite Application Facility，OSI SAF）目前正基于MSG/SEVIRI数据近实时生成海表温度（Sea Surface Temperature，SST）产品。SEVIRI 1.5级数据通过EUMETSAT/EUMETCAST系统由法国气象局空间气象中心（Meteo-France/Centre de Meteorologie Spatiale，CMS）获取。研究人员借助多光谱算法，从SEVIRI的10.8微米与12.0微米红外通道数据中反演得到海表温度；同时结合数值天气预报模式提供的大气水汽廓线与温度廓线，以及辐射传输模型，对该多光谱算法进行校正，以消除因大气条件变化带来的区域与季节偏差。所有15分钟时长的观测数据均以完整卫星分辨率进行处理。随后，业务化产品的生成流程为：将一小时内获取的全部15分钟分辨率海表温度数据进行聚合，得到海表温度场后重映射至0.05度的规则网格（覆盖范围为南纬60°至北纬60°、西经60°至东经60°），且优先选取与产品标称时刻时间间隔最短的观测值。该产品格式符合GHRSST数据规范（GHRSST Data Specification，GDS）2.0版本的要求。