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dc.contributor.authorMcClymont, E.L.
dc.contributor.authorHo, S.L.
dc.contributor.authorFord, H.L.
dc.contributor.authorBailey, I.
dc.contributor.authorBerke, M.A.
dc.contributor.authorBolton, C.T.
dc.contributor.authorde Schepper, S.
dc.contributor.authorGrant, G.R.
dc.contributor.authorGroeneveld, J.
dc.contributor.authorInglis, G.N.
dc.contributor.authorKaras, C.
dc.contributor.authorPatterson, M.O.
dc.contributor.authorSwann, G.E.A.
dc.contributor.authorThirumalai, K.
dc.contributor.authorWhite, S.M.
dc.contributor.authorAlonso-Garcia, M.
dc.contributor.authorAnand, P.
dc.contributor.authorHoogakker, B.A.A.
dc.contributor.authorLittler, K.
dc.contributor.authorPetrick, B.F.
dc.contributor.authorRisebrobakken, B.
dc.contributor.authorAbell, J.T.
dc.contributor.authorCrocker, A.J.
dc.contributor.authorde Graaf, F.
dc.contributor.authorFeakins, S.J.
dc.contributor.authorHargreaves, J.C.
dc.contributor.authorJones, C.L.
dc.contributor.authorMarkowska, M.
dc.contributor.authorRatnayake, A.S.
dc.contributor.authorStepanek, C.
dc.contributor.authorTangunan, D.
dc.date.accessioned2024-08-03T03:12:59Z
dc.date.available2024-08-03T03:12:59Z
dc.date.issued2023-06-14
dc.identifier.citationMcClymont, E. L., Ho, S. L., Ford, H. L., Bailey, I., Berke, M. A., Bolton, C. T., et al. (2023). Climate evolution through the onset and intensification of Northern Hemisphere Glaciation. Reviews of Geophysics, 61, e2022RG000793. https://doi.org/10.1029/2022RG000793
dc.identifier.issn8755-1209
dc.identifier.doi10.1029/2022RG000793
dc.identifier.urihttp://hdl.handle.net/10150/672984
dc.description.abstractThe Pliocene Epoch (∼5.3–2.6 million years ago, Ma) was characterized by a warmer than present climate with smaller Northern Hemisphere ice sheets, and offers an example of a climate system in long-term equilibrium with current or predicted near-future atmospheric CO2 concentrations (pCO2). A long-term trend of ice-sheet expansion led to more pronounced glacial (cold) stages by the end of the Pliocene (∼2.6 Ma), known as the “intensification of Northern Hemisphere Glaciation” (iNHG). We assessed the spatial and temporal variability of ocean temperatures and ice-volume indicators through the late Pliocene and early Pleistocene (from 3.3 to 2.4 Ma) to determine the character of this climate transition. We identified asynchronous shifts in long-term means and the pacing and amplitude of shorter-term climate variability, between regions and between climate proxies. Early changes in Antarctic glaciation and Southern Hemisphere ocean properties occurred even during the mid-Piacenzian warm period (∼3.264–3.025 Ma) which has been used as an analog for future warming. Increased climate variability subsequently developed alongside signatures of larger Northern Hemisphere ice sheets (iNHG). Yet, some regions of the ocean felt no impact of iNHG, particularly in lower latitudes. Our analysis has demonstrated the complex, non-uniform and globally asynchronous nature of climate changes associated with the iNHG. Shifting ocean gateways and ocean circulation changes may have pre-conditioned the later evolution of ice sheets with falling atmospheric pCO2. Further development of high-resolution, multi-proxy reconstructions of climate is required so that the full potential of the rich and detailed geological records can be realized. © 2023. The Authors.
dc.language.isoen
dc.publisherJohn Wiley and Sons Inc
dc.rights© 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License.
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectclimate proxies
dc.subjectdata synthesis
dc.subjectpaleoceanography
dc.subjectpaleoclimate
dc.titleClimate Evolution Through the Onset and Intensification of Northern Hemisphere Glaciation
dc.typeArticle
dc.typetext
dc.contributor.departmentDepartment of Geosciences, The University of Arizona
dc.identifier.journalReviews of Geophysics
dc.description.noteOpen access article
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
dc.eprint.versionFinal Published Version
dc.source.journaltitleReviews of Geophysics
refterms.dateFOA2024-08-03T03:12:59Z


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© 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License.
Except where otherwise noted, this item's license is described as © 2023. The Authors. This is an open access article under the terms of the Creative Commons Attribution License.