• Login
    View Item 
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    •   DSpace Home
    • Institute's contributions
    • Scholarly literature
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Satellite observations of Indian Ocean Dipole driven winter chlorophyll enhancement and phytoplankton size structure in the southeastern Bay of Bengal.

    Thumbnail
    Date
    2026
    Author
    John, J.
    Adith, V.B.
    Akhil, V.P.
    Keerthi, M.G.
    Joy A.J.
    Kurian, S.
    Metadata
    Show full item record
    Abstract
    Winter surface chlorophyll (SChl) in the southeastern Bay of Bengal (SEBB) exhibits pronounced interannual variability associated with positive Indian Ocean Dipole (IOD) events. Elevated SChl concentrations occur during strong positive IOD years and are primarily driven by remotely forced ocean dynamics, particularly Rossby wave-induced changes in upper ocean stratification and nutrient redistribution. Satellite observations during these winters reveal coherent increases in SChl and total phytoplankton carbon biomass, accompanied by a distinct coastal-to-offshore gradient in phytoplankton community size structure. Microphytoplankton biomass is largely confined to nutrient enriched coastal waters near the eastern boundary, whereas nanophytoplankton dominate biomass enhancement across coastal and intermediate waters. Offshore regions are increasingly dominated by picophytoplankton under low nutrient environments. Picophytoplankton carbon biomass persists even when SChl anomalies weaken, indicating a partial decoupling between SChl concentration and phytoplankton biomass. These findings highlight the importance of resolving phytoplankton size classes and carbon biomass alongside SChl, as different size groups respond distinctly to climate driven physical forcing and nutrient availability in nutrient limited tropical oceans.
    URI
    https://www.tandfonline.com/doi/full/10.1080/2150704X.2026.2662544
    http://drs.nio.res.in/drs/handle/2264/9663
    Collections
    • Scholarly literature [9297]

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
    Theme by 
    Atmire NV