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 2017-05-27 (NCEI Accession 0163771)

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.

本数据集为全球1公里分辨率的高分辨率海表温度工作组（Group for High Resolution Sea Surface Temperature，GHRSST）2P级数据集，其基于2012年9月17日发射的欧洲气象业务卫星-B（European Meteorological Operational-B，MetOp-B）搭载的先进甚高分辨率辐射计（Advanced Very High Resolution Radiometer，AVHRR）实时反演得到的多通道海表温度（SST）数据构建而成。

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）正依托MetOp/AVHRR数据近乎实时地生成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（Meteo-France/Centre de Meteorologie Spatiale，CMS）采集获取。研究人员采用多光谱算法，基于AVHRR的3.7、10.8与12.0微米红外通道反演得到SST。研究人员借助数值天气预报模式获取的水汽与温度大气廓线，结合辐射传输模型，针对大气条件变化引发的区域与季节偏差，对多光谱反演算法开展校正工作。该产品以卫星投影下的全分辨率形式交付，其数据单元为对应3分钟采集时长的元颗粒（metagranule）。该产品格式符合GHRSST数据规范（GHRSST Data Specification，GDS）2.0版本要求。