Data Quality Assessment Scope
1) All the data described here has been generated from the analysis of Sentinel-2 data, which has a spatial resolution of approximately 10 m in the Blue, Green, Red and Near Infra-red (NIR) bands, and 20 m in the two Short Wave Infra-red (SWIR) band. The 20 m bands have been resampled to 10 m using cubic convolution, to provide a consistent 10 m data set. The imagery is rectified during processing by the European Space Agency (ESA), and not modified spatially beyond that.
2) The fractional cover model was compared to samples drawn from approximately 4000 field reference sites.
Data Quality Assessment Outcome
1) The Sentinel-2 Data Quality Report from ESA indicates that positional accuracy is on the order of 12 m.
2) The fractional cover model predicts the vegetation cover fractions with MAE/wMAPE/RMSE of:
- bare - 6.9%/34.9%/14.5%
- PV - 4.6%/37.9%/10.6%
- NPV - 9.8%/25.2%/16.9%