GHRSST L3C global 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 2017-05-21 (NCEI Accession 0164067)

A global Group for High Resolution Sea Surface Temperature (GHRSST) Level 3 Collated (L3C) dataset 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. 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 global L3C product is
derived from full resolution AVHRR l1b data that are re-mapped onto a 0.05 degree grid twice daily. The product format is compliant with the GHRSST Data Specification (GDS) version 2.

本数据集为全球高分辨率海表温度工作组（Global Group for High Resolution Sea Surface Temperature, GHRSST）的3级合并（Level 3 Collated, L3C）数据集，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）正基于MetOp/AVHRR近实时生成海表温度（Sea Surface Temperature, SST）产品。全球AVHRR 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）完成获取。研究人员采用多光谱算法，从AVHRR的3.7、10.8及12.0微米红外通道反演得到SST；同时借助数值天气预报模式提供的大气水汽廓线与温度廓线，结合辐射传输模型对该算法进行校正，以抵消大气条件变化引发的区域与季节偏差。该全球L3C产品基于全分辨率AVHRR 1b级数据生成，每日两次重映射至0.05度网格，产品格式符合GHRSST数据规范（GHRSST Data Specification，GDS）2.0版本。