Created May 29, 2026
Updated on May 29, 2026
World Meteorological Organisation (WMO) 3902797 - CLEOPATRA. Physical, biogeochemical and bio-optical products derived from measurements acquired by the autonomous BGC-Argo profiling float WMO 2903797. This dataset provides products derived from 0-2000 m profiles acquired by the autonomous BGC-Argo float WMO 2903797 (National Research Council- CNR, Institute of Marine Sciences - ISMAR) across the Ionian Sea (Mediterranean Sea), since November 2023. This float is equipped with a set of sensors for measuring essential ocean, climate and biodiversity variables. The data were collected and made freely available by the International Argo Program and the national programs that contribute to it (https://argo.ucsd.edu, https://www.ocean-ops.org). The Argo Program is part of the Global Ocean Observing System. All data collected are also publicly available in near real-time via the Global Data Assembly Center (Global Data Assembly Centres (GDAC)) - Coriolis (France) after automated quality control (www.seanoe.org/data/00311/42182). The dataset of derived products contains, for each profile acquired by the BGC-Argo float from 0 to 2000-m depth, a Network Common Data Format (NetCDF) file containing the following quantities: the Mixed layer depth, the Euphotic Depth and profiles of the Potential Density and the Particulate Organic Carbon concentration (POC). POC is computed from quality-controlled optical particulate backscattering measurements at the wavelength of 700 nm and quality-controlled chlorophyll-a concentration according to Koestner et al. (2022, doi:10.3389/fmars.2022.941950). Photosynthetically Available Radiation (PAR) is quality-controlled following the algorithm described in La Forgia and Organelli (2025, doi:10.1002/lom3.10701). The Euphotic depth is estimated as the depth at which the PAR reaches the 1% of its value just below the sea surface, according to Kirk (1994, doi:10.1017/CBO9780511623370). Before the computation of the euphotic depth, PAR profiles have been quality-controlled for cloud effects and wave focusing according to Organelli et al. (2016, doi:10.1175/JTECH-D-15-0193.1). The dataset of derived products is continuously updated in near-real-time as soon as new profiles are available. The authors acknowledge the Research Infrastructure Euro-Argo participating in the ITINERIS project with its Italian node.
