PHAVEOS: The PHenology And Vegetation EO Service

摘要

Monitoring vegetation biophysical variables is key to understand the growth and functioning of vegetation and in turn, provide key inputs in the modelling of bio geochemical cycles. The PHenology And Vegetation EO Service (PHAVEOS) realises the fall spectral, spatial and temporal resolution of the MERIS instrument by generating of a range of biophysical variables on a daily basis. Levellb data undergoes geometric, radiometric and atmospheric correction before application of biophysical algorithms. The resulting Level 2 data is then resampled and composited to a 250m spatial grid to generate daily Level 3 output products. Modelling is then applied to create a time series of Level 4 biophysical maps which retain daily temporal resolution but with full spatial coverage. PHAVEOS is laying the foundations for services that utilise the even higher spatial and temporal resolutions available from the upcoming Sentinel 2 and 3 series of EO platforms.