Recent large increases in freshwater fluxes from Greenland into the North Atlantic

Freshwater (FW) fluxes from river runoff and precipitation minus evaporation for the pan Arctic seas are relatively well documented and prescribed in ocean GCMs. Fluxes from Greenland on the other hand are generally ignored altogether, despite their potential impacts on ocean circulation and marine...

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Published in:Geophysical Research Letters
Main Authors: Bamber, J, Van Den Broeke, M, Ettema, J, Lenaerts, J, Rignot, E
Format: Article in Journal/Newspaper
Language:English
Published: eScholarship, University of California 2012
Subjects:
Arctic
Arctic Ocean
Greenland
Irminger Basin
Ice Sheet
North Atlantic
Online Access:http://www.escholarship.org/uc/item/3dk1v8sz
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spelling ftcdlib:qt3dk1v8sz 2023-05-15T14:55:16+02:00 Recent large increases in freshwater fluxes from Greenland into the North Atlantic Bamber, J Van Den Broeke, M Ettema, J Lenaerts, J Rignot, E 2012-10-16 application/pdf http://www.escholarship.org/uc/item/3dk1v8sz english eng eScholarship, University of California qt3dk1v8sz http://www.escholarship.org/uc/item/3dk1v8sz Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/ CC-BY Bamber, J; Van Den Broeke, M; Ettema, J; Lenaerts, J; & Rignot, E. (2012). Recent large increases in freshwater fluxes from Greenland into the North Atlantic. Geophysical Research Letters, 39(19). doi:10.1029/2012GL052552. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3dk1v8sz article 2012 ftcdlib https://doi.org/10.1029/2012GL052552 2018-07-06T22:52:03Z Freshwater (FW) fluxes from river runoff and precipitation minus evaporation for the pan Arctic seas are relatively well documented and prescribed in ocean GCMs. Fluxes from Greenland on the other hand are generally ignored altogether, despite their potential impacts on ocean circulation and marine biology. Here, we present a reconstruction of the spatially distributed FW flux from Greenland for 1958-2010. We find a modest increase into the Arctic Ocean during this period. Fluxes into the Irminger Basin, however, have increased by fifty percent (6.30.5km 3 yr -2 ) in less than twenty years. This greatly exceeds previous estimates. For the ice sheet as a whole the rate of increase since 1992 is 16.91.8km 3 yr -2 . The cumulative FW anomaly since 1995 is 3200358km 3 , which is about a third of the magnitude of the Great Salinity Anomaly (GSA) of the 1970s. If this trend continues into the future, the anomaly will exceed that of the GSA by about 2025. © 2012. American Geophysical Union. All Rights Reserved. Article in Journal/Newspaper Arctic Arctic Ocean Greenland Ice Sheet North Atlantic University of California: eScholarship Arctic Arctic Ocean Greenland Irminger Basin ENVELOPE(-36.000,-36.000,61.000,61.000) Geophysical Research Letters 39 19 n/a n/a
institution Open Polar
collection University of California: eScholarship
op_collection_id ftcdlib
language English
description Freshwater (FW) fluxes from river runoff and precipitation minus evaporation for the pan Arctic seas are relatively well documented and prescribed in ocean GCMs. Fluxes from Greenland on the other hand are generally ignored altogether, despite their potential impacts on ocean circulation and marine biology. Here, we present a reconstruction of the spatially distributed FW flux from Greenland for 1958-2010. We find a modest increase into the Arctic Ocean during this period. Fluxes into the Irminger Basin, however, have increased by fifty percent (6.30.5km 3 yr -2 ) in less than twenty years. This greatly exceeds previous estimates. For the ice sheet as a whole the rate of increase since 1992 is 16.91.8km 3 yr -2 . The cumulative FW anomaly since 1995 is 3200358km 3 , which is about a third of the magnitude of the Great Salinity Anomaly (GSA) of the 1970s. If this trend continues into the future, the anomaly will exceed that of the GSA by about 2025. © 2012. American Geophysical Union. All Rights Reserved.
format Article in Journal/Newspaper
author Bamber, J
Van Den Broeke, M
Ettema, J
Lenaerts, J
Rignot, E
spellingShingle Bamber, J
Van Den Broeke, M
Ettema, J
Lenaerts, J
Rignot, E
Recent large increases in freshwater fluxes from Greenland into the North Atlantic
author_facet Bamber, J
Van Den Broeke, M
Ettema, J
Lenaerts, J
Rignot, E
author_sort Bamber, J
title Recent large increases in freshwater fluxes from Greenland into the North Atlantic
title_short Recent large increases in freshwater fluxes from Greenland into the North Atlantic
title_full Recent large increases in freshwater fluxes from Greenland into the North Atlantic
title_fullStr Recent large increases in freshwater fluxes from Greenland into the North Atlantic
title_full_unstemmed Recent large increases in freshwater fluxes from Greenland into the North Atlantic
title_sort recent large increases in freshwater fluxes from greenland into the north atlantic
publisher eScholarship, University of California
publishDate 2012
url http://www.escholarship.org/uc/item/3dk1v8sz
long_lat ENVELOPE(-36.000,-36.000,61.000,61.000)
geographic Arctic
Arctic Ocean
Greenland
Irminger Basin
geographic_facet Arctic
Arctic Ocean
Greenland
Irminger Basin
genre Arctic
Arctic Ocean
Greenland
Ice Sheet
North Atlantic
genre_facet Arctic
Arctic Ocean
Greenland
Ice Sheet
North Atlantic
op_source Bamber, J; Van Den Broeke, M; Ettema, J; Lenaerts, J; & Rignot, E. (2012). Recent large increases in freshwater fluxes from Greenland into the North Atlantic. Geophysical Research Letters, 39(19). doi:10.1029/2012GL052552. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/3dk1v8sz
op_relation qt3dk1v8sz
http://www.escholarship.org/uc/item/3dk1v8sz
op_rights Attribution (CC BY): http://creativecommons.org/licenses/by/3.0/
op_rightsnorm CC-BY
op_doi https://doi.org/10.1029/2012GL052552
container_title Geophysical Research Letters
container_volume 39
container_issue 19
container_start_page n/a
op_container_end_page n/a
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