HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Labrador current variability over the last 2000 years

Marie-Alexandrine Sicre 1, 2 Kaarina Weckström 3 Marit-Solveig A. Seidenkrantz 4 Antoon Kuijpers 3 Marion Benetti 5 Guillaume Massé 6 Ullah Ezat 7 Sabine Schmidt 8 Ioanna Bouloubassi 1 Jesper Olsen 4 Myriam Khodri 9 Juliette Mignot 9
1 BTP - Biogéochimie-Traceurs-Paléoclimat
LOCEAN - Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
2 PALEOCEAN - Paléocéanographie
LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] : DRF/LSCE
3 GEUS - Geological Survey of Denmark and Greenland
4 Aarhus University [Aarhus]
5 LOCEAN - Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
6 Takuvik Joint International Laboratory ULAVAL-CNRS
7 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
8 EPOC - Environnements et Paléoenvironnements OCéaniques
9 PARVATI - Processus de la variabilité climatique tropicale et impacts
LOCEAN - Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
Abstract : The ice-loaded Labrador Current (LC) is an important component of the western North Atlantic circulation that influences the position and strength of the northern limb of the North Atlantic Current (NAC). This flow of cold and fresh Polar Waters originating from the Arctic has a marked impact on the North Atlantic climate, yet little is known about its variability beyond the instrumental period. In this study, we present the first sub-decadal alkenone-based 2000-year long sea-surface temperature (SST) records from the western Labrador Sea, a climatically crucial region at the boundary between the LC and the NAC. Our results show a clear link between the LC strength and the Northern Annular Mode (NAM), with a stronger NAM and a more vigorous LC during the Medieval Climate Anomaly (MCA). This suggests enhanced LC activity upon future global warming with implications for the Atlantic meridional overturning circulation (AMOC).
Document type :
Journal articles
Complete list of metadata
https://hal.archives-ouvertes.fr/hal-01060154
Contributor : Françoise Pinsard Connect in order to contact the contributor
Submitted on : Saturday, January 15, 2022 - 5:36:57 PM
Last modification on : Friday, April 8, 2022 - 3:48:08 PM
Long-term archiving on: : Saturday, April 16, 2022 - 6:04:40 PM

Files

Vignette du document
Sicre al_accepted.pdf

Identifiers

Collections

X | FR-636 | UNIV-PARIS7 | UP-SCIENCES | UVSQ | UNIV-PARIS | LSCE | LSCE-CEA | GS-GEOSCIENCES | CEA | PSL | UPMC | INSU | CNRS | LOCEAN | MNHN | SU-SCIENCES | SORBONNE-UNIVERSITE | EPHE | IRD | SU-TI

Citation

Marie-Alexandrine Sicre, Kaarina Weckström, Marit-Solveig A. Seidenkrantz, Antoon Kuijpers, Marion Benetti, et al.. Labrador current variability over the last 2000 years. Earth and Planetary Science Letters, Elsevier, 2014, 400, pp.26-32. ⟨10.1016/J.EPSL.2014.05.016⟩. ⟨hal-01060154⟩

Export

BibTeX TEI DC DCterms EndNote Datacite

Share

Metrics

Record views

149

Files downloads

10