Observatoire des Sciences de l'Univers Stamar

• Article dans une revue

Accurate estimation of photosynthetic available radiation from multispectral downwelling irradiance profiles

Jaime Pitarch, Edouard Leymarie, Vincenzo Vellucci, Luca Massi, Hervé Claustre, Antoine Poteau, David Antoine, Emanuele Organelli

Abstract Photosynthetic available radiation (PAR) is the light usable by photosynthetic organisms. Photosynthetic available radiation measurements at depth are required to quantify the light availability for primary production. Direct PAR measurements may be measured with full‐spectrum quantum…

Limnology and Oceanography: Methods, 2025, ⟨10.1002/lom3.10673⟩. ⟨hal-04961529⟩

• Article dans une revue

Coupling ecological concepts with an ocean-colour model: Parameterisation and forward modelling

Xuerong Sun, Robert J.W. Brewin, Shubha Sathyendranath, Giorgio Dall’olmo, David Antoine, Ray Barlow, Astrid Bracher, Malika Kheireddine, Mengyu Li, Dionysios E Raitsos, Fang Shen, Gavin H Tilstone, Vincenzo Vellucci

<div><p>In the first part of this paper series (Sun et al., 2023), we developed an ecological model that partitions the total chlorophyll-a concentration (Chl-a) into three phytoplankton size classes (PSCs), pico-, nano-, and microplankton. The parameters of this model are controlled by…

Remote Sensing of Environment, 2025, 316, pp.114487. ⟨10.1016/j.rse.2024.114487⟩. ⟨hal-04810479⟩

• Article dans une revue

Daily Sun‐induced chlorophyll fluorescence vs. irradiance curves reflect the photoadaptation of phytoplankton in surface waters

Yannick Huot, David Antoine, Vincenzo Vellucci

Phytoplankton chlorophyll Sun‐induced fluorescence is observable in the upwelling light field of the ocean. This allows its observation by radiometers in situ or on satellite sensors. Since it is influenced by both biomass and physiology it can potentially provide information about both. Since…

Limnology and Oceanography, In press, ⟨10.1002/lno.70001⟩. ⟨hal-04989496⟩

• Article dans une revue

An updated synthesis of ocean total alkalinity and dissolved inorganic carbon measurements from 1993 to 2023: the SNAPO-CO₂-v2 dataset

Nicolas Metzl, Jonathan Fin, Claire Lo Monaco, Claude Mignon, Samir Alliouane, Bruno Bombled, Jacqueline Boutin, Yann Bozec, Steeve Comeau, Pascal Conan, Laurent Coppola, Pascale Cuet, Eva Ferreira, Jean-Pierre Gattuso, Frédéric Gazeau, Catherine Goyet, Emilie Grossteffan, Bruno Lansard, Dominique Lefèvre, Nathalie Lefèvre, Coraline Leseurre, Sébastien Petton, Mireille Pujo-Pay, Christophe Rabouille, Gilles Reverdin, Céline Ridame, Peggy Rimmelin-Maury, Jean-François Ternon, Franck Touratier, Aline Tribollet, Thibaut Wagener, Cathy Wimart-Rousseau

Abstract. Total alkalinity (AT) and dissolved inorganic carbon (CT) in the oceans are important properties to understand the ocean carbon cycle and its link with global change (ocean carbon sinks and sources, ocean acidification) and ultimately to find carbon-based solutions or mitigation…