POSTER SESSION 2
10:30–12:30, Tuesday, September 15
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
ABSTRACT 1307 | POSTER 42
RETRIEVAL OF PARTICULATE INORGANIC CARBON IN THE NORTH SEA WITH THE MTG/FCI GEOSTATIONARY SENSOR
Particulate Inorganic Carbon (PIC) is an important component of the marine carbon cycle with a dual role in carbon sequestration and release. In the pelagic environment, PIC is produced by calcifying plankton, particularly coccolithophores. Mapping of coccolithophore bloom areas and monitoring PIC concentration have been performed from space using multispectral ocean colour satellites since the CZCS and SeaWiFS missions. Here we provide a first evaluation of the geostationary Meteosat Third Generation (MTG) Flexible Combined Imager (FCI) to map coccolithophore bloom areas and associated PIC concentration in the North Sea. In situ data were collected in 2024-2025, in which PIC was measured via ICP-OES from discrete water samples, and continuously during ship transit with optical sensors. Existing waveband difference algorithms were adapted to the FCI wavebands. The classification method confidently detected bloom areas with PIC above 40 mg/m3 (3.3 mmol/m3), while correctly excluding areas with a high non-coccolithophore particle load. The PIC retrieval algorithm showed a Mean Absolute Percentage Deviation (MAPD) of 40% against discrete samples (N = 7) and 22% against the continuous PIC measurements (N = 43). While these results were obtained from a single campaign and a single coccolithophore bloom, they suggest that the FCI can be used to detect coccolithophore bloom areas and PIC, warranting additional work to validate performance and possibly improve algorithm design. We demonstrate the advantage of the high temporal frequency of FCI, providing better coverage of areas with frequent cloud cover.
Alexandre Castagna, Ghent University, [email protected], https://orcid.org/0000-0002-6069-1574
Clémence Goyens, Marine Optics and Remote Sensing (MarSens) research group, Ghent University, [email protected], https://orcid.org/0000-0002-8036-6082
Qiming Sun, Marine Optics and Remote Sensing (MarSens) research group, Ghent University, [email protected], https://orcid.org/0000-0001-6132-5093
Quinten Vanhellemont, Operational Directorate Natural Environment, Royal Belgian Institute of Natural Sciences, [email protected], ttps://orcid.org/0000-0001-9195-6347
Griet Neukermans, Marine Optics and Remote Sensing (MarSens) research group, Ghent University, [email protected], https://orcid.org/0000-0002-8258-3590
Poster Session | 1 | 2 | 3 | 4 | Schedule at a Glance
