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dc.contributor.authorNarayana, A.C.
dc.contributor.authorNaidu, P.D.
dc.contributor.authorBhavani, P.G.
dc.contributor.authorAhmad, M.
dc.date.accessioned2020-12-31
dc.date.accessioned2021-02-09T10:13:12Z
dc.date.available2020-10-30
dc.date.available2021-02-09T10:13:12Z
dc.date.issued2020
dc.identifier.citationJournal of Earth System Science, vol.129(1); 2020; Article no: 214
dc.identifier.issn0973774X
dc.identifier.otherhttps://link.springer.com/article/10.1007/s12040-020-01484-z
dc.identifier.urihttps://doi.org/10.1007/s12040-020-01484-z
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8405
dc.descriptionIF2019 - 1.423
dc.description.abstractA record of delta18Oc from the Indian sector of Southern Ocean and atmospheric CO2, and delta18O of European Project for Ice Coring in Antarctica (EPICA) and Greenland Ice Sheet Project 2 (GISP2) reveals that a coherent response between delta18O record of Antarctic ice core and the delta18Oc record from Southern Indian Ocean during the deglaciation with initial warming starting around 18 kyr BP which is in agreement with the raise of atmospheric CO2 during same time. A distinct asynchrony between the records of delta18Oc from the Southern Indian Ocean and delta18O of GISP2 during the last deglaciation is noticed. We report that Southern Ocean degassing played an important role in raising atmospheric CO2 through Atlantic Meridional Overturning Circulation (AMOC), which has an implication in triggering abrupt climate events through coupling of ocean and atmospheric processes. Highlights: A synchrony between the temperature variations between the Antarctica and the southern sector of the Indian Ocean are noticed during the deglaciation. Initiation of deglacial warming in the southern sector of Indian Ocean started around 18 Ka which coincides with rise of atmospheric CO2 during the same time. Degassing in the Southern Ocean played an important role in raising atmospheric CO2 during the deglaciation. Changes in AMOC variations contributed to the trigger of CO2 degassing from the deep Southern Ocean.
dc.languageen
dc.publisherSpringer
dc.relation.ispartofJ Earth Syst Sci
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 coherent response of Southern Indian Ocean to the Antarctic climate: Implications to the lead, lags of atmospheric CO2 during deglaciation
dc.typeJournal Article
dc.affiliation.authorCentre for Earth, Ocean and Atmospheric Sciences, University of Hyderabad, Hyderabad, 500 046, India


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