The first appearance of Glacial North Atlantic Intermediate Water (GNAIW) during the Mid-Pleistocene transition

• Verfasst von: Bahr, André [VerfasserIn]
• Verfasst von: Amorim Catunda, Maria Carolina [VerfasserIn]
• Verfasst von: Friedrich, Oliver [VerfasserIn]
• Titel: The first appearance of Glacial North Atlantic Intermediate Water (GNAIW) during the Mid-Pleistocene transition
• Verf.angabe: André Bahr, Maria Carolina Amorim Catunda, Oliver Friedrich
• E-Jahr: 2022
• Jahr: 26 October 2022
• Umfang: 11 S.
• Fussnoten: Gesehen am 18.01.2023
• Titel Quelle: Enthalten in: Global and planetary change
• Ort Quelle: Amsterdam [u.a.] : Elsevier Science, 1989
• Jahr Quelle: 2022
• Band/Heft Quelle: 218(2022), Artikel-ID 103977, Seite 1-11
• ISSN Quelle: 1872-6364
• DOI: doi:10.1016/j.gloplacha.2022.103977
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Intermediate water
• Sach-SW: Isopycnal transport
• Sach-SW: Mid-Pleistocene transition
• Sach-SW: North Atlantic
• Sach-SW: Stable isotopes
• K10plus-PPN: 1831415739

Abstract

The Mid-Pleistocene Transition (MPT) is arguably the most prominent shift in the Earth's climate system during the entire Pleistocene. It is characterized by a shift from a ∼ 40 kyr to a ∼ 100 kyr glacial cyclicity, going in hand with considerable growth of glacial continental ice-sheets. In search for potential drivers of these changes in the cryosphere, a slow-down of deep ocean circulation has been proposed as an important factor that might have reduced the atmospheric pCO2 level and thus created boundary conditions favourable for pertaining large ice-sheets. Additionally, as argued for the Last Glacial Maximum, enhanced production of intermediate waters might enhance intermediate to deep oceanic stratification and thus suppress CO2 release from the deep ocean and thereby reduce atmospheric greenhouse gas concentrations.