Controls on the Transport of Meltwater From the Southern Greenland Ice Sheet in the Labrador Sea

Renato M. Castelao, Hao Luo, Hilde Oliver, Asa K. Rennermalm, Marco Tedesco, Annalisa Bracco, Patricia L. Yager, Thomas L. Mote, Patricia M. Medeiros

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Coastal waters in the Labrador Sea are influenced by the seasonal input of meltwater from the Greenland ice sheet, which is predicted to more than double by the end of the century. Mechanisms controlling the offshore export of meltwater can have a significant effect on stratification and vertical stability in the Labrador Sea, being particularly important if the meltwater is transported toward the interior of the basin where winter convection occurs. Here we use a high-resolution ocean model to show that coastal upwelling winds play a critical role transporting the meltwater offshore to about 150 km from the coast, where increased eddy activity and mean circulation can then transport the meltwater farther offshore. While meltwater discharged from West Greenland is either transported to Baffin Bay or circumnavigates the basin flowing mostly along isobaths, meltwater from East Greenland can reach the interior of the basin where it may influence stratification and winter convection whenever winds are anomalously upwelling favorable in late summer and early fall.

Original languageEnglish (US)
Pages (from-to)3551-3560
Number of pages10
JournalJournal of Geophysical Research: Oceans
Volume124
Issue number6
DOIs
StatePublished - Jun 2019

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences (miscellaneous)
  • Geochemistry and Petrology
  • Geophysics
  • Oceanography
  • Space and Planetary Science

Keywords

  • Greenland
  • Labrador Sea
  • cross-shelf transport
  • ice sheet
  • meltwater

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