GHRSST Level 2P sub-skin Sea Surface Temperature from the Advanced Very High Resolution Radiometer (AVHRR) on Metop satellites (currently Metop-B) (GDS V2) produced by OSI SAF for 2017-05-22 (NCEI Accession 0164050)

A global 1 km Group for High Resolution Sea Surface Temperature (GHRSST) Level 2P dataset based on multi-channel sea surface temperature (SST) retrievals generated in real-time from the Advanced Very High Resolution Radiometer (AVHRR) on the European Meteorological Operational-B (MetOp-B) satellite (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. Global AVHRR level 1b data are acquired at Meteo-France/Centre de Meteorologie Spatiale (CMS) through the EUMETSAT/EUMETCAST system. SST is retrieved from the AVHRR infrared channels (3.7, 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. This product is delivered at full resolution in satellite projection as metagranule corresponding to 3 minutes of acquisition. The product format is compliant with the GHRSST Data Specification (GDS) version 2.全球1公里分辨率的高分辨率海表面温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）2P级数据集，该数据集基于多通道海表面温度（sea surface temperature，SST）反演结果，由2012年9月17日发射的欧洲气象业务-B卫星（MetOp-B）搭载的先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer，AVHRR）实时生成。 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）正基于MetOp/AVHRR数据近实时生产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（Centre de Meteorologie Spatiale，CMS）获取。科研人员通过多光谱算法，从AVHRR的红外通道（3.7、10.8和12.0微米）反演得到SST。结合数值天气预报模式的水汽与温度大气廓线，以及辐射传输模型，对该多光谱算法进行校正，以抵消大气条件变化带来的区域与季节偏差。该产品以卫星投影下的全分辨率形式交付，对应3分钟采集时长的元颗粒（metagranule）。其产品格式符合GHRSST数据规范（GHRSST Data Specification，GDS）2.0版本要求。