eprintid: 10184562
rev_number: 6
eprint_status: archive
userid: 699
dir: disk0/10/18/45/62
datestamp: 2024-01-03 14:15:03
lastmod: 2024-01-03 14:15:03
status_changed: 2024-01-03 14:15:03
type: article
metadata_visibility: show
sword_depositor: 699
creators_name: Inglis, Gordon N
creators_name: Bhatia, Rehemat
creators_name: Evans, David
creators_name: Zhu, Jiang
creators_name: Müller, Wolfgang
creators_name: Mattey, David
creators_name: Thornalley, David JR
creators_name: Stockey, Richard G
creators_name: Wade, Bridget S
title: Surface Ocean Cooling in the Eocene North Atlantic Coincides
With Declining Atmospheric CO2
ispublished: pub
divisions: UCL
divisions: B04
divisions: B03
divisions: C06
divisions: C03
divisions: F57
divisions: F26
keywords: Cenozoic temperature, multi-proxy, North Atlantic eocene, foraminifera
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users will need to obtain permission from the license holder to reproduce the material. To view a copy of this
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abstract: The Eocene (56–34 million years ago) is characterized by declining sea surface temperatures (SSTs) in the low latitudes (∼4°C) and high southern latitudes (∼8–11°C), in accord with decreasing CO2 estimates. However, in the mid‐to‐high northern latitudes there is no evidence for surface water cooling, suggesting thermal decoupling between northern and southern hemispheres and additional non‐CO2 controls. To explore this further, we present a multi‐proxy (Mg/Ca, δ18O, TEX86) SST record from Bass River in the western North Atlantic. Our compiled multi‐proxy SST record confirms a net decline in SSTs (∼4°C) between the early Eocene Climatic Optimum (53.3–49.1 Ma) and mid‐Eocene (∼44–41 Ma), supporting declining atmospheric CO2 as the primary mechanism of Eocene cooling. However, from the mid‐Eocene onwards, east‐west North Atlantic temperature gradients exhibit different trends, which we attribute to incursion of warmer waters into the eastern North Atlantic and inception of Northern Component Water across the early‐middle Eocene transition.
date: 2023-12-23
date_type: published
publisher: American Geophysical Union (AGU)
official_url: http://dx.doi.org/10.1029/2023gl105448
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 2136098
doi: 10.1029/2023gl105448
lyricists_name: Wade, Bridget
lyricists_name: Thornalley, David
lyricists_id: BSWAD95
lyricists_id: DTHOR31
actors_name: Wade, Bridget
actors_id: BSWAD95
actors_role: owner
full_text_status: public
publication: Geophysical Research Letters
volume: 50
number: 24
article_number: e2023GL105448
citation:        Inglis, Gordon N;    Bhatia, Rehemat;    Evans, David;    Zhu, Jiang;    Müller, Wolfgang;    Mattey, David;    Thornalley, David JR;         ... Wade, Bridget S; + view all <#>        Inglis, Gordon N;  Bhatia, Rehemat;  Evans, David;  Zhu, Jiang;  Müller, Wolfgang;  Mattey, David;  Thornalley, David JR;  Stockey, Richard G;  Wade, Bridget S;   - view fewer <#>    (2023)    Surface Ocean Cooling in the Eocene North Atlantic Coincides With Declining Atmospheric CO2.                   Geophysical Research Letters , 50  (24)    , Article e2023GL105448.  10.1029/2023gl105448 <https://doi.org/10.1029/2023gl105448>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10184562/1/Inglis%20et%20al%202023.pdf