Annually resolved Atlantic sea surface temperature variability over the past 2,900 y.
Arctic climate
Atlantic multidecadal variability
global warming
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
03 11 2020
03 11 2020
Historique:
pubmed:
14
10
2020
medline:
5
1
2021
entrez:
13
10
2020
Statut:
ppublish
Résumé
Global warming due to anthropogenic factors can be amplified or dampened by natural climate oscillations, especially those involving sea surface temperatures (SSTs) in the North Atlantic which vary on a multidecadal scale (Atlantic multidecadal variability, AMV). Because the instrumental record of AMV is short, long-term behavior of AMV is unknown, but climatic teleconnections to regions beyond the North Atlantic offer the prospect of reconstructing AMV from high-resolution records elsewhere. Annually resolved titanium from an annually laminated sedimentary record from Ellesmere Island, Canada, shows that the record is strongly influenced by AMV via atmospheric circulation anomalies. Significant correlations between this High-Arctic proxy and other highly resolved Atlantic SST proxies demonstrate that it shares the multidecadal variability seen in the Atlantic. Our record provides a reconstruction of AMV for the past ∼3 millennia at an unprecedented time resolution, indicating North Atlantic SSTs were coldest from ∼1400-1800 CE, while current SSTs are the warmest in the past ∼2,900 y.
Identifiants
pubmed: 33046633
pii: 2014166117
doi: 10.1073/pnas.2014166117
pmc: PMC7959532
doi:
Types de publication
Historical Article
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
27171-27178Informations de copyright
Copyright © 2020 the Author(s). Published by PNAS.
Déclaration de conflit d'intérêts
The authors declare no competing interest.
Références
Science. 2003 Nov 7;302(5647):1027-30
pubmed: 14551320
Sci Rep. 2016 Sep 09;6:32984
pubmed: 27609585
Science. 2005 Jul 1;309(5731):115-8
pubmed: 15994552
Science. 1999 Nov 26;286(5445):1709-13
pubmed: 10576732
Science. 2001 Jul 20;293(5529):474-9
pubmed: 11463911
Science. 1998 Oct 9;282(5387):268-71
pubmed: 9765146
Proc Natl Acad Sci U S A. 2017 Jun 13;114(24):6227-6232
pubmed: 28559341
Science. 2009 Nov 27;326(5957):1256-60
pubmed: 19965474
Nature. 2009 Sep 17;461(7262):385-8
pubmed: 19759618
Nat Commun. 2016 Jun 09;7:11723
pubmed: 27277547
Nat Commun. 2016 Dec 06;7:13502
pubmed: 27922004
Sci Adv. 2015 Dec 04;1(11):e1500806
pubmed: 26665173