Identification of Algal Blooms in the North Patagonian Gulfs using ocean color remote sensing and field optical properties.

WILLIAMS, GABRIELA NOEMI; GLEMBOCKI, NORA; GARCIA VILLALOBOS, LEILEN; BERMEJO, PAULA; POHORYLOW MIRNA LAURA; NOCERA, ARIADNA CELINA

Workshop; PACE Applications Workshop; 2023

NASA

This project proposes to use optical satellite and in-situ data to study the coastal waters of the Golfo Nuevo (Patagonia, Argentina), a marine ecosystem with an important biodiversity and anthropic impact. Previous studies in the area have detected water quality deterioration, harmful algal blooms, and macroalgae arrivals. The aim of this proposal is to calculate indices to assess the water quality of coastal waters in the last 20 years (2003-2023). Time series of ocean color satellite data (mainly MODIS sensor) will help us to determine trends in water quality indicators (temperature, chlorophyll-a, total suspended solids, turbity, etc). In addition, high spatial resolution maps of these indicators derived from OLCI, MSI, OLI and TIRS sensors will allow us to evaluate spatial heterogeneity associated with contributions from the continent in recent years. We have enough training and experience in the use and acquisition of satellite and field data through the resources provided by NASA ARSET, IOCCG and CONAE (argentinian space agency) to integrate the PACE mission into our research. This project is relevant in socioeconomic aspects because the environmental characteristics of the study area determine and support local recreational, tourist and fishing activities. Maps of water quality indices may be transferred to government entities in order to contribute to strategies for marine conservation and sustainable use of resources in the study area.