GHRSST Level 3C Atlantic Subskin Sea Surface Temperature from the Spinning Enhanced Visible and Infrared Imager (SEVIRI) on MSG-3 weather satellite (GDS2 version) for 2016-05-19 (NCEI Accession 0154445)

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). This particular dataset is produced by the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), Ocean and Sea Ice Satellite Application Facility (OSI SAF) in France. The Meteosat Second Generation (MSG-3) satellites are spin stabilized geostationary satellites operated by the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT) to provide accurate weather monitoring data through its primary instrument SEVIRI, which has the capacity to observe the Earth in 12 spectral channels. Eight of these channels are in the thermal infrared, providing among other information, observations of the temperatures of clouds, land and sea surfaces at approximately 5 km resolution with a 15 minute duty cycle. The OSI-SAF SST processing chain for geostationary satellite will ingest the SEVIRI radiometric data in full time (every 15 minutes) and space resolution, then the NWC (nowcasting) SAF cloud mask is applied. There are no additions to the original mask as contrary to the METOP/AVHRR chain. The operational products are then produced by remapping over a 0.05 degree regular grid 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. This dataset produced adheres to the GHRSST Data Processing Specification (GDS) version 2 format specifications.

本数据集为东大西洋区域高分辨率海表温度数据集（Group for High Resolution Sea Surface Temperature, GHRSST），数据来源于2012年7月5日发射的气象卫星第二代（Meteosat Second Generation, MSG-3）卫星搭载的旋转增强型可见及红外成像仪（Spinning Enhanced Visible and InfraRed Imager, SEVIRI）。该数据集由位于法国的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）生成。
气象卫星第二代（MSG-3）卫星为欧洲气象卫星开发组织（EUMETSAT）运营的自旋稳定对地静止卫星，其搭载的主载荷SEVIRI具备12个光谱通道的对地观测能力，可提供高精度气象监测数据。其中8个通道位于热红外波段，可观测云体、陆地及海表温度，空间分辨率约为5公里，观测周期为15分钟。
OSI SAF针对对地静止卫星的海表温度处理链路，将每15分钟全时、全空间分辨率的SEVIRI辐射计数据导入，随后应用临近预报（Nowcasting）卫星应用设施（NWC SAF）云掩膜。与METOP/AVHRR处理链路不同，该处理链路未对原始云掩膜进行额外修改。
最终生成的业务化产品通过以下流程得到：将1小时内所有可获取的15分钟分辨率海表温度数据聚合得到海表温度场，再将其重映射至0.05度规则网格，并优先选取距产品标称时刻最近的观测值。本数据集符合GHRSST数据处理规范（GHRSST Data Processing Specification, GDS）2.0版本的格式要求。