Bai, G., Dash, J., Brown, L., Meier, C., Lerebourg, C., Ronco, E., …Gobron, N. (2019, July). GBOV (Ground-Based Observation for Validation): a copernicus service for validation of vegetation land products. Presented at 2019 IEEE International Geoscience and Remote Sensing Symposium, Yokohama, Japan