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Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay
- Source :
- Scientific Reports, Scientific Reports, Nature Publishing Group, 2021, 11, pp.10095. ⟨10.1038/s41598-021-88517-9⟩, Scientific Reports, Vol 11, Iss 1, Pp 1-17 (2021), Scientific Reports, 2021, 11, pp.10095. ⟨10.1038/s41598-021-88517-9⟩, Jackson, R, Kvorning, A B, Limoges, A, Georgiadis, E, Olsen, S M, Tallberg, P, Andersen, T J, Mikkelsen, N, Giraudeau, J, Massé, G, Wacker, L & Ribeiro, S 2021, ' Holocene polynya dynamics and their interaction with oceanic heat transport in northernmost Baffin Bay ', Scientific Reports, vol. 11, no. 1, 10095 . https://doi.org/10.1038/s41598-021-88517-9, Scientific Reports, 11 (1), Scientific Reports, 2021, Vol.11(1), pp.10095 [Peer Reviewed Journal]
- Publication Year :
- 2021
- Publisher :
- Nature Publishing Group UK, 2021.
-
Abstract
- Baffin Bay hosts the largest and most productive of the Arctic polynyas: the North Water (NOW). Despite its significance and active role in water mass formation, the history of the NOW beyond the observational era remains poorly known. We reconcile the previously unassessed relationship between long-term NOW dynamics and ocean conditions by applying a multiproxy approach to two marine sediment cores from the region that, together, span the Holocene. Declining influence of Atlantic Water in the NOW is coeval with regional records that indicate the inception of a strong and recurrent polynya from ~ 4400 yrs BP, in line with Neoglacial cooling. During warmer Holocene intervals such as the Roman Warm Period, a weaker NOW is evident, and its reduced capacity to influence bottom ocean conditions facilitated northward penetration of Atlantic Water. Future warming in the Arctic may have negative consequences for this vital biological oasis, with the potential knock-on effect of warm water penetration further north and intensified melt of the marine-terminating glaciers that flank the coast of northwest Greenland.
- Subjects :
- SHELF
1171 Geosciences
010506 paleontology
Water mass
010504 meteorology & atmospheric sciences
Science
Palaeoclimate
01 natural sciences
Deep sea
Article
Palaeoceanography
PALAEO SEA-ICE
STORFJORDEN
14. Life underwater
NORTH WATER POLYNYA
ASSEMBLAGES
Roman Warm Period
DEEP-SEA
Holocene
1172 Environmental sciences
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography
0105 earth and related environmental sciences
BENTHONIC FORAMINIFERA
geography
Multidisciplinary
geography.geographical_feature_category
Sediment
Glacier
GREENLAND
BENTHIC FORAMINIFERA
Oceanography
13. Climate action
[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology
Warm water
Medicine
NARES STRAIT
Bay
Geology
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....1a0cc97193b6e731abd05edc5467161c