Satellite - Ocean Colour - NOAA20 - 1 day - Chlorophyll-a concentration (GSM model)

The NOAA20 satellite platform carries a VIIRS sensor that observes sunlight reflected from within the ocean surface layer at multiple wavelengths. These multi-spectral measurements are used to infer the concentration of chlorophyll-a (Chl-a), most typically due to phytoplankton, present in the water. There are multiple retrieval algorithms for estimating Chl-a. These data use the Garver-Siegel-Maritorena (GSM) method implemented in the SeaDAS processing software l2gen and described in “Chapter 11, and references therein, of IOCCG Report 5, 2006, (http://ioccg.org/wp-content/uploads/2015/10/ioc...NOAA20卫星平台搭载了可见光红外成像辐射套件（Visible Infrared Imaging Radiometer Suite，VIIRS）传感器，可在多个波段下观测海洋表层反射的太阳光。此类多光谱测量数据可用于反演水体中以浮游植物为主的叶绿素a（Chl-a）浓度。目前已存在多种用于估算叶绿素a浓度的反演算法。本数据集采用Garver-Siegel-Maritorena（GSM）方法，该方法通过SeaDAS处理软件的l2gen模块实现，相关细节见于2006年IOCCG第5号报告第11章及其中引用文献（http://ioccg.org/wp-content/uploads/2015/10/ioc...）