Vis enkel innførsel

dc.contributor.authorBehera, Padmasini
dc.contributor.authorTiwari, Manish
dc.contributor.authorKnies, Jochen
dc.date.accessioned2021-08-17T10:39:14Z
dc.date.available2021-08-17T10:39:14Z
dc.date.issued2021-06-10
dc.description.abstractGlobal warming is most pronounced in the Arctic as evident from the massive sea ice loss during the past few decades. The Mid-Pliocene Warm Period (MPWP), 3.264 – 3.025 million years ago with similar CO2 levels, is the nearest analogue for understanding the impacts of future global warming. High-resolution studies of relative nutrient utilization and productivity from the Atlantic-Arctic Gateway (AAG) can provide insight into the nutrient availability governed by stratification strength during past warm climates. Here, we present relative nutrient utilization and productivity variability during the MPWP using sediments collected during the Ocean Drilling Program (ODP) Leg 151 from Fram Strait, AAG. We find that the relative nutrient utilization was high (low) implying stronger (weaker) stratification during warm (cold) periods during the MPWP. Stronger stratification inhibits the nutrient influx from intermediate water depths into the surface leading to higher utilization of available nutrients. It existed during warm periods likely due to enhanced summer sea ice melt and river discharge from the hinterland. As a consequence, the freshened surface layer could have stored more heat and accelerated the sea ice melt further implying that in the present-day warm scenario, stronger stratification and upper layer freshening may lead to more sea ice melt in the Arctic Ocean.en_US
dc.descriptionThis paper was published by AGU. Copyright (2021) American Geophysical Union.en_US
dc.identifier.citationBehera, Tiwari, Knies. Enhanced Arctic stratification in a warming scenario: Evidence from the mid pliocene warm Pperiod. Paleoceanography and Paleoclimatology. 2021;36(6):1-13en_US
dc.identifier.cristinIDFRIDAID 1921002
dc.identifier.doi10.1029/2020PA004182
dc.identifier.issn2572-4517
dc.identifier.issn2572-4525
dc.identifier.urihttps://hdl.handle.net/10037/22089
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalPaleoceanography and Paleoclimatology
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDNorges forskningsråd: 248793en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/POLARPROG/248793/Norway/Pliocene Arctic Climate Teleconnections//en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holder© 2021. American Geophysical Union. All Rights Reserved.en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.titleEnhanced Arctic stratification in a warming scenario: Evidence from the mid pliocene warm Pperioden_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel