Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas
Abstract Freshwater input from Greenland ice sheet melt has been increasing in the past decades from warming temperatures. To identify the impacts from enhanced meltwater input into the subpolar North Atlantic from 1997 to 2021, we use output from two nearly identical simulations in the eddy‐rich mo...
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ftdoajarticles:oai:doaj.org/article:4be515e04b084643a854d4c14fe38a53 2024-09-15T18:08:39+00:00 Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas Ilana Schiller‐Weiss Torge Martin Franziska U. Schwarzkopf 2024-05-01T00:00:00Z https://doi.org/10.1029/2024GL109022 https://doaj.org/article/4be515e04b084643a854d4c14fe38a53 EN eng Wiley https://doi.org/10.1029/2024GL109022 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL109022 https://doaj.org/article/4be515e04b084643a854d4c14fe38a53 Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024) Geophysics. Cosmic physics QC801-809 article 2024 ftdoajarticles https://doi.org/10.1029/2024GL109022 2024-08-05T17:49:23Z Abstract Freshwater input from Greenland ice sheet melt has been increasing in the past decades from warming temperatures. To identify the impacts from enhanced meltwater input into the subpolar North Atlantic from 1997 to 2021, we use output from two nearly identical simulations in the eddy‐rich model VIKING20X (1/20°) only differing in the freshwater input from Greenland: one with realistic interannually varying runoff increasing in the early 2000s and the other with climatologically (1961–2000) continued runoff. The majority of the additional freshwater remains within the boundary current enhancing the density gradient toward the warm and salty interior waters yielding increased current velocities. The accelerated boundary current shows a tendency to enhanced, upstream shifted eddy shedding into the Labrador Sea interior. Further, the experiments allow to attribute higher stratification and shallower mixed layers southwest of Greenland and deeper mixed layers in the Irminger Sea, particularly in 2015–2018, to the runoff increase in the early 2000s. Article in Journal/Newspaper Greenland Ice Sheet Labrador Sea North Atlantic Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 51 9 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Geophysics. Cosmic physics QC801-809 Ilana Schiller‐Weiss Torge Martin Franziska U. Schwarzkopf Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
topic_facet |
Geophysics. Cosmic physics QC801-809 |
description |
Abstract Freshwater input from Greenland ice sheet melt has been increasing in the past decades from warming temperatures. To identify the impacts from enhanced meltwater input into the subpolar North Atlantic from 1997 to 2021, we use output from two nearly identical simulations in the eddy‐rich model VIKING20X (1/20°) only differing in the freshwater input from Greenland: one with realistic interannually varying runoff increasing in the early 2000s and the other with climatologically (1961–2000) continued runoff. The majority of the additional freshwater remains within the boundary current enhancing the density gradient toward the warm and salty interior waters yielding increased current velocities. The accelerated boundary current shows a tendency to enhanced, upstream shifted eddy shedding into the Labrador Sea interior. Further, the experiments allow to attribute higher stratification and shallower mixed layers southwest of Greenland and deeper mixed layers in the Irminger Sea, particularly in 2015–2018, to the runoff increase in the early 2000s. |
format |
Article in Journal/Newspaper |
author |
Ilana Schiller‐Weiss Torge Martin Franziska U. Schwarzkopf |
author_facet |
Ilana Schiller‐Weiss Torge Martin Franziska U. Schwarzkopf |
author_sort |
Ilana Schiller‐Weiss |
title |
Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
title_short |
Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
title_full |
Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
title_fullStr |
Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
title_full_unstemmed |
Emerging Influence of Enhanced Greenland Melting on Boundary Currents and Deep Convection Regimes in the Labrador and Irminger Seas |
title_sort |
emerging influence of enhanced greenland melting on boundary currents and deep convection regimes in the labrador and irminger seas |
publisher |
Wiley |
publishDate |
2024 |
url |
https://doi.org/10.1029/2024GL109022 https://doaj.org/article/4be515e04b084643a854d4c14fe38a53 |
genre |
Greenland Ice Sheet Labrador Sea North Atlantic |
genre_facet |
Greenland Ice Sheet Labrador Sea North Atlantic |
op_source |
Geophysical Research Letters, Vol 51, Iss 9, Pp n/a-n/a (2024) |
op_relation |
https://doi.org/10.1029/2024GL109022 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2024GL109022 https://doaj.org/article/4be515e04b084643a854d4c14fe38a53 |
op_doi |
https://doi.org/10.1029/2024GL109022 |
container_title |
Geophysical Research Letters |
container_volume |
51 |
container_issue |
9 |
_version_ |
1810446033380966400 |