Accuracy assessment of GAI retrieval from SPOT5 Take5 according to crop type and crop development (BELCAM)

BELCAM is a research project designed to exploit the new Copernicus satellites in the most relevant way for Belgian agriculture stakeholders. Building on the complementarity of satellite remote sensing technologies and local farm-sourcing, one of the research question is to investigate the sources of performance variability of the biophysical variables (BV) retrieved from remote sensing such as Green Area Index (GAI), fAPAR, biomass and chlorophyll content. Those BV are of major importance to estimate the Nitrogen content at the field scale and deliver practical information to the farmers on the Nitrogen status of the crops. BELCAM focuses on two crops for the Nitrogen advices : winter wheat and potato.