Fernandes R.,Canada Center For Remote Sensing |
Weiss M.,French National Institute for Agricultural Research |
Camacho F.,EOLAB Spain |
Berthelot B.,Magellium France |
And 2 more authors.
International Geoscience and Remote Sensing Symposium (IGARSS) | Year: 2014
Leaf area index (LAI) is identified as a Level 2b product to be derived from the Sentinel-2 (S2) Multispectral Imager (MSI) in support of user services . The Validation of Sentinel 2 (VALSE2) project conducted a review, implementation and validation of LAI algorithms suitable for the MSI. Validation was performed using simulated MSI imagery co-located with in-situ LAI over 7 ESA Campaigns. Here we describe two implemented algorithms, the INRA Neural Network algorithm (NNET) and the CCRS Red-Edge algorithm (CCRS), and report on their verification using the PROSAILH radiative transfer model as well as validation both over the BARRAX ESA Campaign as well as prior campaigns. Results indicate both algorithms can provide reasonably unbiased LAI estimates with acceptable error (<1 unit) over prior validation sites but with larger (>1 unit) error over BARRAX. The larger error may be due to a combination of noisy input image data as well as the combination of sparse canopies and bright soils at that site. © 2014 IEEE.
Saunier S.,Magellium France |
Camlong N.,Magellium France |
Floissac P.,Magellium France |
Hillairet E.,Magellium France |
And 4 more authors.
IEEE Geoscience and Remote Sensing Magazine | Year: 2015
One of the key elements of Copernicus is its Space Component (CSC). Beyond the development of the Sentinel missions, the CSC also entails the coordination of assets made available by the data providers of Copernicus Contributing Mission (CCMs) to implement a synergistic and complete operational system-of-systems in Europe for the provision of Earth Observation (EO) data. In the framework of Copernicus, ESA is in charge of developing an efficient and harmonised system to facilitate access to relevant EO data by the Copernicus Service Projects (CSPs). This is achieved through the implementation of the Copernicus Space Component Data Access (CSCDA). © 2013 IEEE.