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

Jonathan Bamber*, Michiel van den Broeke, Janneke Ettema, Jan Lenaerts, Eric Rignot

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

225 Citations (Scopus)
521 Downloads (Pure)

Abstract

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 (6.3±0.5 km3 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 16.9±1.8 km3 yr-2. The cumulative FW anomaly since 1995 is 3200±358 km3, 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.
Translated title of the contribution"Recent large increases in freshwater fluxes from Greenland into the North Atlantic
Original languageEnglish
Article number19501
Number of pages4
JournalGeophysical Research Letters
Volume39
DOIs
Publication statusPublished - 9 Oct 2012

Keywords

  • ICE-SHEET
  • CLIMATE-CHANGE
  • ARCTIC-OCEAN
  • 21ST CENTURIES
  • GLACIERS
  • CIRCULATION
  • DISCHARGE
  • IMPACTS
  • RUNOFF
  • FJORD

Fingerprint

Dive into the research topics of 'Recent large increases in freshwater fluxes from Greenland into the North Atlantic'. Together they form a unique fingerprint.

Cite this