New capabilities of Sentinel-2A/B satellites combined with in situ data for monitoring small harmful algal blooms in complex coastal waters

Autor: R. Fernández, Luz Maman, Gabriel Navarro, Isabel Caballero, Oscar Moreno Escalante
Přispěvatelé: Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, Instituto de Investigación y Formación Agraria y Pesquera (España), CSIC - Instituto de Ciencias Marinas de Andalucía (ICMAN)
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Scientific Reports, Vol 10, Iss 1, Pp 1-14 (2020)
Digital.CSIC. Repositorio Institucional del CSIC
instname
Scientific Reports
ISSN: 2045-2322
DOI: 10.1038/s41598-020-65600-1
Popis: The increased frequency of harmful algal blooms (HABs) is a major environmental concern worldwide, resulting not only in increased treatment costs for drinking water but also in impacts on tourism, commercial fishing and aquaculture and risks to human and animal health. Traditional strategies with ship-based approaches based on field sampling and laboratory analysis have been adopted to assess HABs. However, these methods are labour intensive and costly and do not provide synoptic views of the bloom conditions. Here, we show that the Sentinel-2 twin satellite mission of the Copernicus programme, in combination with in situ data, is a powerful tool that can offer valuable spatiotemporal information about a bloom of the dinoflagellate Lingulodinium polyedra that occurred on the SW Iberian Peninsula. Using the robust ACOLITE atmospheric correction processor combined with the normalized difference chlorophyll index (NDCI), the enhanced mapping of small blooms can be performed at a 10 m spatial resolution, revealing surface patches and a heterogeneous distribution. This research also demonstrates the improved capabilities of Sentinel-2 compared to those of Landsat-8 and Sentinel-3 for continuous monitoring. The Sentinel-3 and Sentinel-2 missions provide ecosystem observations that allow the environmental community and water managers to evaluate changes in water quality and bloom distribution and that facilitate field-based measurements. Therefore, the value added by the Copernicus products in terms of frequency and synoptic observations is of paramount importance for ecological and management purposes at regional and national scales.
This research was funded by the Spanish Ministry of Science, Innovation and Universities (MCIU), the State Research Agency (AEI), and the European Regional Development Fund (ERDF) in the context of the Sen2Coast Project (RTI2018–098784-J-I00) and the Technology Support Contract between IFAPA and ICMAN-CSIC “Procesamiento y extracción de datos de satélite y modelado numérico para uso en la gestión de la pesquería”. This research has been supported by the European funding programme INTERREG Atlantic Area with the project PRIMROSE (EAPA_182/2016).
Databáze: OpenAIRE
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