Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states
<jats:p>Abstract. While a large cryosphere may be a necessary boundary condition for millennial-scale events to persist, a growing body of evidence from previous interglacial periods suggests that high-magnitude climate events are possible during low-cryosphere climate states. However, the ful...
Published in: | Climate of the Past |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus GmbH
2022
|
Subjects: | |
Online Access: | https://livrepository.liverpool.ac.uk/3155936/ https://doi.org/10.5194/cp-18-989-2022 https://livrepository.liverpool.ac.uk/3155936/1/Holmes%20et%20al.,%202022,%20Reorganization%20of%20Atlantic%20Waters%20at%20sub-polar%20latitudes%20linked%20to%20deep-water%20overflow%20in%20both%20glacial%20and%20interglacial%20climate%20states.pdf |
id |
ftunivliverpool:oai:livrepository.liverpool.ac.uk:3155936 |
---|---|
record_format |
openpolar |
spelling |
ftunivliverpool:oai:livrepository.liverpool.ac.uk:3155936 2024-09-15T18:20:30+00:00 Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states Holmes, Dakota E Babila, Tali L Ninnemann, Ulysses Bromley, Gordon Tyrrell, Shane Paterson, Greig A Curran, Michelle J Morley, Audrey 2022-05-06 text https://livrepository.liverpool.ac.uk/3155936/ https://doi.org/10.5194/cp-18-989-2022 https://livrepository.liverpool.ac.uk/3155936/1/Holmes%20et%20al.,%202022,%20Reorganization%20of%20Atlantic%20Waters%20at%20sub-polar%20latitudes%20linked%20to%20deep-water%20overflow%20in%20both%20glacial%20and%20interglacial%20climate%20states.pdf en eng Copernicus GmbH https://livrepository.liverpool.ac.uk/3155936/1/Holmes%20et%20al.,%202022,%20Reorganization%20of%20Atlantic%20Waters%20at%20sub-polar%20latitudes%20linked%20to%20deep-water%20overflow%20in%20both%20glacial%20and%20interglacial%20climate%20states.pdf Holmes, Dakota E, Babila, Tali L, Ninnemann, Ulysses, Bromley, Gordon, Tyrrell, Shane, Paterson, Greig A, Curran, Michelle J and Morley, Audrey (2022) Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states. CLIMATE OF THE PAST, 18 (5). pp. 989-1009. Article NonPeerReviewed 2022 ftunivliverpool https://doi.org/10.5194/cp-18-989-2022 2024-07-08T14:17:39Z <jats:p>Abstract. While a large cryosphere may be a necessary boundary condition for millennial-scale events to persist, a growing body of evidence from previous interglacial periods suggests that high-magnitude climate events are possible during low-cryosphere climate states. However, the full spectrum of variability, and the antecedent conditions under which such variability can occur, have not been fully described. As a result, the mechanisms generating high-magnitude climate variability during low-cryosphere boundary conditions remain unclear. In this study, high-resolution climate records from Deep Sea Drilling Project (DSDP) site 610 are used to portray the North Atlantic climate's progression through low ice, boundary conditions of Marine Isotope Stage (MIS) 11c into the glacial inception. We show that this period is marked by two climate events displaying rapid shifts in both deep overflow and surface climate. The reorganization between Polar Water and Atlantic Water at subpolar latitudes appears to accompany changes in the flow of deep water emanating from the Nordic Seas, regardless of magnitude or boundary conditions. Further, during both intermediate and low ice boundary conditions, we find that a reduction in deep water precedes surface hydrographic change. The existence of surface and deep-ocean events, with similar magnitudes, abruptness, and surface–deep phasing, advances our mechanistic understanding of, and elucidates antecedent conditions that can lead to, high-magnitude climate instability. </jats:p> Article in Journal/Newspaper Nordic Seas North Atlantic The University of Liverpool Repository Climate of the Past 18 5 989 1009 |
institution |
Open Polar |
collection |
The University of Liverpool Repository |
op_collection_id |
ftunivliverpool |
language |
English |
description |
<jats:p>Abstract. While a large cryosphere may be a necessary boundary condition for millennial-scale events to persist, a growing body of evidence from previous interglacial periods suggests that high-magnitude climate events are possible during low-cryosphere climate states. However, the full spectrum of variability, and the antecedent conditions under which such variability can occur, have not been fully described. As a result, the mechanisms generating high-magnitude climate variability during low-cryosphere boundary conditions remain unclear. In this study, high-resolution climate records from Deep Sea Drilling Project (DSDP) site 610 are used to portray the North Atlantic climate's progression through low ice, boundary conditions of Marine Isotope Stage (MIS) 11c into the glacial inception. We show that this period is marked by two climate events displaying rapid shifts in both deep overflow and surface climate. The reorganization between Polar Water and Atlantic Water at subpolar latitudes appears to accompany changes in the flow of deep water emanating from the Nordic Seas, regardless of magnitude or boundary conditions. Further, during both intermediate and low ice boundary conditions, we find that a reduction in deep water precedes surface hydrographic change. The existence of surface and deep-ocean events, with similar magnitudes, abruptness, and surface–deep phasing, advances our mechanistic understanding of, and elucidates antecedent conditions that can lead to, high-magnitude climate instability. </jats:p> |
format |
Article in Journal/Newspaper |
author |
Holmes, Dakota E Babila, Tali L Ninnemann, Ulysses Bromley, Gordon Tyrrell, Shane Paterson, Greig A Curran, Michelle J Morley, Audrey |
spellingShingle |
Holmes, Dakota E Babila, Tali L Ninnemann, Ulysses Bromley, Gordon Tyrrell, Shane Paterson, Greig A Curran, Michelle J Morley, Audrey Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
author_facet |
Holmes, Dakota E Babila, Tali L Ninnemann, Ulysses Bromley, Gordon Tyrrell, Shane Paterson, Greig A Curran, Michelle J Morley, Audrey |
author_sort |
Holmes, Dakota E |
title |
Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
title_short |
Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
title_full |
Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
title_fullStr |
Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
title_full_unstemmed |
Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
title_sort |
reorganization of atlantic waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states |
publisher |
Copernicus GmbH |
publishDate |
2022 |
url |
https://livrepository.liverpool.ac.uk/3155936/ https://doi.org/10.5194/cp-18-989-2022 https://livrepository.liverpool.ac.uk/3155936/1/Holmes%20et%20al.,%202022,%20Reorganization%20of%20Atlantic%20Waters%20at%20sub-polar%20latitudes%20linked%20to%20deep-water%20overflow%20in%20both%20glacial%20and%20interglacial%20climate%20states.pdf |
genre |
Nordic Seas North Atlantic |
genre_facet |
Nordic Seas North Atlantic |
op_relation |
https://livrepository.liverpool.ac.uk/3155936/1/Holmes%20et%20al.,%202022,%20Reorganization%20of%20Atlantic%20Waters%20at%20sub-polar%20latitudes%20linked%20to%20deep-water%20overflow%20in%20both%20glacial%20and%20interglacial%20climate%20states.pdf Holmes, Dakota E, Babila, Tali L, Ninnemann, Ulysses, Bromley, Gordon, Tyrrell, Shane, Paterson, Greig A, Curran, Michelle J and Morley, Audrey (2022) Reorganization of Atlantic Waters at sub-polar latitudes linked to deep-water overflow in both glacial and interglacial climate states. CLIMATE OF THE PAST, 18 (5). pp. 989-1009. |
op_doi |
https://doi.org/10.5194/cp-18-989-2022 |
container_title |
Climate of the Past |
container_volume |
18 |
container_issue |
5 |
container_start_page |
989 |
op_container_end_page |
1009 |
_version_ |
1810458881161166848 |