Fraction of Absorbed Photosynthetically Active Radiation - Sentinel-3 - South America

The FAPAR quantifies the fraction of the solar radiation absorbed by plants for photosynthesis. It refers only to the green and living elements of the canopy. The FAPAR depends on the canopy structure, vegetation element optical properties, atmospheric conditions and angular configuration. To overcome this latter dependency, a daily integrated FAPAR value is assessed. FAPAR is very useful as input to a number of primary productivity models and is recognized as an Essential Climate Variable (ECV) by the Global Climate Observing System (GCOS). From the available global product, this product is a geographic subset over South America. Access to Copernicus Land Service products is free and open to all users.光合有效辐射吸收比（FAPAR）用于量化植物用于光合作用所吸收的太阳辐射占比，其仅涵盖冠层内的绿色活组织组分。该参数的取值取决于冠层结构、植被组分光学特性、大气条件以及角度配置。为规避此类依赖效应，研究中会计算每日积分的FAPAR数值。FAPAR作为多款初级生产力模型的输入参数具备极高应用价值，同时被全球气候观测系统（GCOS）认定为气候关键变量（ECV）。 本数据集源自现有全球产品，为南美洲区域的地理子集。哥白尼陆地服务（Copernicus Land Service）的所有产品均面向所有用户免费开放获取。