Coupling ecological concepts with an ocean-colour model: Parameterisation and forward modelling
| Type | : | ACL |
|---|---|---|
| Nature | : | Production scientifique |
| Au bénéfice du Laboratoire | : | Oui |
| Statut de publication | : | Publié |
| Année de publication | : | 2025 |
| Auteurs (13) | : | SUN X BREWIN Robert,j,w SATHYENDRANATH Shubha DALL’OLMO Giorgio ANTOINE David BARLOW R BRACHER Astrid KHEIREDDINE Malika LI Mengyu RAITSOS D,e SHEN F TILSTONE Gavin,h VELLUCCI Vincenzo |
| Revue scientifique | : | Remote Sensing of Environment |
| Volume | : | 316 |
| Fascicule | : | |
| Pages | : | |
| DOI | : | 10.1016/j.rse.2024.114487 |
| URL | : | https://www.sciencedirect.com/science/article/pii/S0034425724005133 |
| Abstract | : | 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 sea surface temperature (SST), intended to capture shifts in phytoplankton size structure independently of variations in total Chl-a. In this second part of the series, we present an Ocean Colour Modelling Framework (OCMF), building on the classical Case-1 assumption, that explicitly incorporates our ecological model. The OCMF assumes the presence of the three PSCs and the existence of an independent background of non-algal particles. The framework assumes each phytoplankton group resides in a distinct optical environment, assigning chlorophyll-specific inherent optical properties to each group, both directly (phytoplankton) and indirectly (non-algal particulate and dissolved substances). The OCMF is parameterised, validated, and assessed using a large global dataset of inherent and apparent optical properties. We use the OCMF to explore the influence of variations in temperature and Chl-a on phytoplankton size structure and its resulting effects on ocean colour. We also discuss applications of the OCMF, such as its potential for inverse modelling and phytoplankton climate trend detection, which will be explored further in subsequent papers. |
| Mots-clés | : | Climate change; Forward modelling; Inherent and apparent optical properties; Ocean-colour remote sensing; Ocean colour modelling framework; Phytoplankton size classes |
| Commentaire | : | - |
| Tags | : | - |
| Fichier attaché | : | - |
| Citation | : |
Sun X, Brewin RJW, Sathyendranath S, Dall’Olmo G, Antoine D, Barlow R, Bracher A, Kheireddine M, Li M, Raitsos DE, Shen F, Tilstone GH, Vellucci V (2025) Coupling ecological concepts with an ocean-colour model: Parameterisation and forward modelling. Remote Sens Environ 316 | doi: 10.1016/j.rse.2024.114487
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