POSTER SESSION 1
15:30–17:30, Monday, September 14
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ABSTRACT 1353 | POSTER 41
OLCI SENTINEL-3 AS A MONITORING TOOL FOR HIGHLY COMPLEX WATERS IN BRAZIL’S SOUTHERN COAST
The last decades have been marked by significant advancements in remote sensing technology, for both continental and marine usage. One of the main advances in ocean remote sensing technology was the launch of Sentinel-3 satellites, with higher spatial and spectral resolution, making it a valuable tool for monitoring coastal regions. The present work aims to analyze the time-series of chlorophyll-a concentration (Chla), suspended material (TSM) and dissolved organic matter (CDOM) Sentinel-3 products along the southern coast of Rio Grande do Sul (Brazil), providing a framework for monitoring operational tools. Sentinel-3 data was downloaded in batch from May/2016 to May/2025, and the performance of the current implemented algorithms were tested using in-situ data prior to the Spatio-temporal analysis. Preliminary results showed that regional bio-optical algorithms, such as the OC2LPv2, improved the chlorophyll-a retrievals when applied to Level-2 reflectance data (Baseline Atmospheric Correction). TSM and CDOM data were also sampled to evaluate the operational C2RCC products, showing a mild overestimation for TSM and substantial overestimation for CDOM. The study area exhibits high spatiotemporal dynamics due to the presence of Patos lagoon estuary and the influence of La Plata River plume in the coastal region, where Sentinel-3 resolution will be of great value. The work provides a broad database of oceanographic variables in higher resolution than is already available in other worldwide databases, providing crucial data for environmental and ecological applications.
Vitor Cardoso*, FURG, [email protected], https://orcid.org/0000-0003-4123-5415
Maria Fernanda Giannini, FURG, [email protected], https://orcid.org/0000-0002-8036-8483
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