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dc.contributor.authorSridevi, B.
dc.contributor.authorAshitha, M.K.
dc.contributor.authorSarma, V.V.S.S.
dc.contributor.authorBhaskar, T.V.S.U.
dc.contributor.authorChakraborty, K.
dc.contributor.authorBhavani, I.V.G.
dc.contributor.authorValsala, V.
dc.date.accessioned2024-10-03
dc.date.accessioned2025-02-11T11:21:19Z
dc.date.available2024-08-31
dc.date.available2025-02-11T11:21:19Z
dc.date.issued2024
dc.identifier.citationJournal of Geophysical Research: Biogeosciences, vol.129(9); 2024; Article no: e2024JG008211
dc.identifier.issn2169-8961
dc.identifier.otherhttps://onlinelibrary.wiley.com/doi/full/10.1029/2024JG008211
dc.identifier.urihttps://doi.org/10.1029/2024JG008211
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9370
dc.descriptionIF2023= 3.7
dc.description.abstractThe dissolved nitrate is one of the major essential nutrients for primary production in the tropical ocean and it is brought to the surface though mixing. The depth of nitracline determines how much of nitrate enters to the upper ocean through mixing. The depth of nitracline is traditionally estimated using nitrate concentrations measured at standard depths that introduces significant error due to interpolation of data. Based nitrate profiles measured at 5 m interval using nitrate sensors onboard Argo, the exact depth of nitracline was derived in the Bay of Bengal that displayed a significant linear relationship with depth of 26 C isotherm (D26). Based on climatological D26, the temporal and spatial variations in the depth of nitracline was estimated for the entire Bay of Bengal. The depth of nitracline varied between 5 and 80 m with large spatial and temporal variability in the Bay of Bengal and it is 5-20 m deeper than simulations of numerical models. The relationship between the depth of nitracline and photic zone integrated primary production indicates that 7.5 3 mgC m?2 d?1 of primary production increases due to shallowing of 1 m of depth of nitracline. Therefore, models seem to be over estimating the photic zone integrated primary production by 5%-25% in the Bay of Bengal. The numerical models may improve the simulation of primary production and carbon cycling by accounting the accurate estimation of depth of nitracline in the model initialization.
dc.languageen
dc.publisherJohn Wiley & Sons, Ltd
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleA new climatology of depth of nitracline in the Bay of Bengal for improving model simulations
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Visakhapatnam, Andhra Pradesh, India


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