Annual variations in phytoplankton biomass driven by small-scale physical processes
Résumé
Phytoplankton biomass exhibits substantial year-to-year changes, and understanding these changes is crucial to fisheries management and projecting future climate. These annual changes result partly from low-frequency climate modes that also lead to variations in sea surface temperature (SST). Here we evaluate the contribution of small scales to annual fluctuations based on a global analysis of satellite observations of sea surface chlorophyll (SChl), an indicator of phytoplankton biomass, and of SST from 1999 to 2018. We disentangle the spatio-temporal scales of variability in the time series and find that besides the prominent seasonal cycle, SChl is dominated by high-frequency fluctuations (
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https://ird.hal.science/ird-03852817
Soumis le : mardi 15 novembre 2022-10:37:45
Dernière modification le : vendredi 12 avril 2024-15:52:02
Archivage à long terme le : jeudi 16 février 2023-18:49:05
Dates et versions
Identifiants
- HAL Id : ird-03852817 , version 1
- DOI : 10.1038/s41561-022-01057-3
- IRD : fdi:010089890
- WOS : 000883294100001
Citer
Madhavan Girijakumari Keerthi, Channing J. Prend, Olivier Aumont, Marina Lévy. Annual variations in phytoplankton biomass driven by small-scale physical processes. Nature Geoscience, 2022, ⟨10.1038/s41561-022-01057-3⟩. ⟨ird-03852817⟩
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