GHRSST Level 3C North Atlantic Regional (NAR) subskin Sea Surface Temperature from Metop/AVHRR (GDS V2) produced by OSI SAF for 2017-05-21 (NCEI Accession 0164066)

A Group for High Resolution Sea Surface Temperature (GHRSST) dataset for the North Atlantic Region (NAR) derived from the Advanced Very High Resolution Radiometer (AVHRR) on the European Meteorological Operational-B (MetOp-B) platform (launched 17 Sep 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 Metop/AVHRR and SNPP/VIIRS. Global AVHRR level 1b data are acquired at Meteo-
France/Centre de Meteorologie Spatiale (CMS) through the EUMETSAT/EUMETCAST system.
NAR SNPP/VIIRS level 0 data are acquired through direct readout and converted into l1b at CMS.
SST is retrieved from the AVHRR and VIIRS infrared channels using a multispectral algorithm.
This product is delivered as four six hourly collated files per day on a regular 2km grid. The
product format is compliant with the GHRSST Data Specification (GDS) version 2.

本数据集为高分辨率海表温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）面向北大西洋区域（North Atlantic Region，NAR）构建的数据集，其数据源自2012年9月17日发射的欧洲气象业务卫星-B（European Meteorological Operational-B，MetOp-B）平台搭载的先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer，AVHRR）。

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）正依托MetOp/AVHRR与SNPP/VIIRS传感器生成近实时海表温度（Sea Surface Temperature，SST）产品。全球AVHRR的1b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；北大西洋区域的SNPP/VIIRS 0级数据则通过直接读取方式获取，并由CMS转换为1b级数据。研究人员采用多光谱算法，从AVHRR与VIIRS的红外通道中反演得到海表温度。该产品以每日4份6小时间隔的整编文件形式交付，采用规则2km网格，其产品格式符合高分辨率海表温度数据规范（GHRSST Data Specification，GDS）2.0版本要求。