Qualification of atmospheric correction and water quality retrieval from OLCI for European inland and transitional waters
| Main Authors: | Bresciani, Mariano, Giardino, Claudia, Vaiciute, Diana, Cazzaniga, Ilaria |
|---|---|
| Format: | Proceeding poster |
| Terbitan: |
, 2018
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| Online Access: |
https://zenodo.org/record/1462914 |
Daftar Isi:
- In inland and transitional systems, where optically complex waters dominate due to the different origins of water constituents, atmospheric correction and water quality retrieval might be particularly tricky. For example, residual signal in the NIR due to suspended matter prevents from using of algorithms based on the NIR complete absorption assumption, used in clear waters. The aim of this work is to evaluate the accuracy of Sentinel3A-OLCI products in three inland waters basins, with increasing trophic state, from the deep oligotrophic Lake Garda (Italy), to the shallower, eutrophic and turbid Lake Trasimeno (Italy) and to the iper-eutrophic Curonian Lagoon (Lithuania-Russian). Remote Sensing Reflectance (Rrs) and Chlorophyll-a (CHL) obtained with: i) standard Level-2 OLCI ; ii) SNAP-Neural Network; and iii) 6SV code and bio-optical model are compared to matchups of in situ measurements. Poster presented at the '4th Sentinel-3 Validation Team Meeting – EUMETSAT, Darmstadt, 2018'