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dc.contributor.authorSridevi, B.
dc.contributor.authorSarma, V.V.S.S.
dc.date.accessioned2024-10-03
dc.date.accessioned2024-10-10T11:46:01Z
dc.date.available2024-05-15
dc.date.available2024-10-10T11:46:01Z
dc.date.issued2024
dc.identifier.citationEnvironmental Research Communications, vol.6(5); 2024; Article no: 051006
dc.identifier.issn2515-7620
dc.identifier.otherhttps://iopscience.iop.org/article/10.1088/2515-7620/ad45c1
dc.identifier.urihttps://doi.org/10.1088/2515-7620/AD45C1
dc.identifier.urihttp://drs.nio.res.in/drs/handle/2264/9278
dc.descriptionIF2022= 2.9
dc.description.abstractAnthropogenic carbon dioxide (CO 2 ) penetrates up to 1000 m of water column in the Indian Ocean resulting in acidification and corrosion of aragonite skeletal material. The shallowest aragonite saturation horizon (ASH) was observed in the Bay of Bengal (BoB; 219���10 m) within the tropical Indian Ocean. The ASH shoaled at the rate of 6.3���5 and 4.4���3 m yr ?1 in the past four decades in the BoB and Arabian Sea respectively. As a result, an increase in total alkalinity (TA) was observed at the rate of 0.5���0.3 and 0.25���0.2 ? mol kg ?1 yr ?1 at the depth of ASH in the BoB, and Arabian Sea respectively. While the shoaling rate of ASH remained the same in the Arabian Sea over the past four decades, in contrast, rapid shoaling was observed in the BoB in the recent decades due to higher accumulation of anthropogenic CO 2 in the upper ocean associated with an increase in river discharge and decomposition of riverine organic matter. These two processes decreased the pH resulting in corrosion of aragonite skeletal material and increased TA at the depth of ASH in the BoB. Under a business-as-usual scenario, aragonite-secreting organisms will be seriously affected by the middle of this century in the BoB.
dc.languageen
dc.publisherIOP Publishing
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.titleRapid shoaling of aragonite saturation horizon in the northern Indian Ocean
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Visakhapatnam, Andhra Pradesh, India


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