Impact of Greenland orography on the Atlantic Meridional Overturning Circulation
We show that the absence of the Greenland ice sheet would have important consequences on the North Atlantic Ocean circulation, even without taking into account the effect of the freshwater input to the ocean from ice melting. These effects are investigated in a 600year long coupled ocean-atmosphere...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AMER GEOPHYSICAL UNION
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/11583/2814812 https://doi.org/10.1002/2014GL062668 |
id |
ftpoltorinoiris:oai:iris.polito.it:11583/2814812 |
---|---|
record_format |
openpolar |
spelling |
ftpoltorinoiris:oai:iris.polito.it:11583/2814812 2024-04-14T08:05:43+00:00 Impact of Greenland orography on the Atlantic Meridional Overturning Circulation Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. 2015 http://hdl.handle.net/11583/2814812 https://doi.org/10.1002/2014GL062668 eng eng AMER GEOPHYSICAL UNION info:eu-repo/semantics/altIdentifier/wos/WOS:000351355600026 volume:42 issue:3 firstpage:871 lastpage:879 numberofpages:9 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/11583/2814812 doi:10.1002/2014GL062668 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84925140101 info:eu-repo/semantics/openAccess Greenland orography North Atlantic Circulation AMOC info:eu-repo/semantics/article 2015 ftpoltorinoiris https://doi.org/10.1002/2014GL062668 2024-03-21T16:31:56Z We show that the absence of the Greenland ice sheet would have important consequences on the North Atlantic Ocean circulation, even without taking into account the effect of the freshwater input to the ocean from ice melting. These effects are investigated in a 600year long coupled ocean-atmosphere simulation with the high-resolution global climate model EC-Earth 3.0.1. Once a new equilibrium is established, a cooling of Eurasia and of the North Atlantic and a poleward shift of the subtropical jet are observed. These hemispheric changes are ascribed to a weakening of the Atlantic Meridional Overturning Circulation (AMOC) by about 12%. We attribute this slowdown to a reduction in salinity of the Arctic basin and to the related change of the mass and salt transport through the Fram Straita consequence of the new surface wind pattern over the lower orography. This idealized experiment illustrates the sensitivity of the AMOC to local surface winds. Article in Journal/Newspaper Arctic Basin Arctic Greenland Ice Sheet North Atlantic PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) Arctic Greenland Geophysical Research Letters 42 3 871 879 |
institution |
Open Polar |
collection |
PORTO@iris (Publications Open Repository TOrino - Politecnico di Torino) |
op_collection_id |
ftpoltorinoiris |
language |
English |
topic |
Greenland orography North Atlantic Circulation AMOC |
spellingShingle |
Greenland orography North Atlantic Circulation AMOC Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
topic_facet |
Greenland orography North Atlantic Circulation AMOC |
description |
We show that the absence of the Greenland ice sheet would have important consequences on the North Atlantic Ocean circulation, even without taking into account the effect of the freshwater input to the ocean from ice melting. These effects are investigated in a 600year long coupled ocean-atmosphere simulation with the high-resolution global climate model EC-Earth 3.0.1. Once a new equilibrium is established, a cooling of Eurasia and of the North Atlantic and a poleward shift of the subtropical jet are observed. These hemispheric changes are ascribed to a weakening of the Atlantic Meridional Overturning Circulation (AMOC) by about 12%. We attribute this slowdown to a reduction in salinity of the Arctic basin and to the related change of the mass and salt transport through the Fram Straita consequence of the new surface wind pattern over the lower orography. This idealized experiment illustrates the sensitivity of the AMOC to local surface winds. |
author2 |
Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. |
format |
Article in Journal/Newspaper |
author |
Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. |
author_facet |
Davini, P. von Hardenberg, J. Filippi, L. Provenzale, A. |
author_sort |
Davini, P. |
title |
Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
title_short |
Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
title_full |
Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
title_fullStr |
Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
title_full_unstemmed |
Impact of Greenland orography on the Atlantic Meridional Overturning Circulation |
title_sort |
impact of greenland orography on the atlantic meridional overturning circulation |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2015 |
url |
http://hdl.handle.net/11583/2814812 https://doi.org/10.1002/2014GL062668 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Basin Arctic Greenland Ice Sheet North Atlantic |
genre_facet |
Arctic Basin Arctic Greenland Ice Sheet North Atlantic |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000351355600026 volume:42 issue:3 firstpage:871 lastpage:879 numberofpages:9 journal:GEOPHYSICAL RESEARCH LETTERS http://hdl.handle.net/11583/2814812 doi:10.1002/2014GL062668 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84925140101 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2014GL062668 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
3 |
container_start_page |
871 |
op_container_end_page |
879 |
_version_ |
1796302339408134144 |