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 2016-05-20 (NCEI Accession 0154429)

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（Group for High Resolution Sea Surface Temperature，GHRSST）数据集，数据源自2012年7月5日发射的第二代梅蒂萨特卫星（Meteosat Second Generation，MSG-3）搭载的旋转增强型可见红外成像仪（Spinning Enhanced Visible and InfraRed Imager，SEVIRI）。该数据集由法国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）制作。第二代梅蒂萨特卫星（MSG-3）为自旋稳定对地静止卫星，由欧洲气象卫星开发组织（EUMETSAT）运营，其搭载的主载荷SEVIRI可提供精准气象监测数据；该成像仪具备12个光谱通道的对地观测能力，其中8个为热红外通道，可获取云、陆地及海表温度等信息，空间分辨率约5 km，重访周期为15分钟。OSI SAF针对对地静止卫星的海表温度处理链路将接收全时（每15分钟一次）、全空间分辨率的SEVIRI辐射计数据，随后应用临近预报卫星应用设施（nowcasting SAF，NWC SAF）云掩膜。与METOP/AVHRR处理链不同，该处理链路未对原始掩膜进行任何额外修改。后续将生成业务化产品：先将1小时内所有可获取的15分钟分辨率海表温度数据聚合为海表温度场，再将其重映射至0.05度规则网格，其中优先采用距产品标称时刻最接近的观测值。本数据集符合GHRSST数据处理规范（GHRSST Data Processing Specification，GDS）2.0版格式要求。