Moored observations of synoptic and seasonal variability in the East Greenland Coastal Current

dc.contributor.author Harden, Benjamin E.
dc.contributor.author Straneo, Fiamma
dc.contributor.author Sutherland, David A.
dc.date.accessioned 2015-02-24T17:01:58Z
dc.date.available 2015-06-23T09:09:17Z
dc.date.issued 2014-12-23
dc.description Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research: Oceans 119 (2014): 8838–8857, doi:10.1002/2014JC010134. en_US
dc.description.abstract We present a year-round assessment of the hydrographic variability within the East Greenland Coastal Current on the Greenland shelf from five synoptic crossings and 4 years of moored hydrographic data. From the five synoptic sections the current is observed as a robust, surface intensified flow with a total volume transport of 0.66 ± 0.18 Sv and a freshwater transport of 42 ± 12 mSv. The moorings showed heretofore unobserved variability in the abundance of Polar and Atlantic water masses in the current on synoptic scales. This is exhibited as large vertical displacement of isotherms (often greater than 100 m). Seasonally, the current is hemmed into the coast during the fall by a full depth Atlantic Water layer that has penetrated onto the inner shelf. The Polar Water layer in the current then thickens through the winter and spring seasons increasing the freshwater content in the current; the timing implies that this is probably driven by the seasonally varying export of freshwater from the Arctic and not the local runoff from Greenland. The measured synoptic variability is enhanced during the winter and spring period due to a lower halocline and a concurrent enhancement in the along-coast wind speed. The local winds force much of the high-frequency variability in a manner consistent with downwelling, but variability distinct from downwelling is also visible. en_US
dc.description.embargo 2015-06-23 en_US
dc.description.sponsorship This work was funded by the National Science Foundation grant OCE-1130008, NASA grant NNX13AK88G, and the Ocean and Climate Change Institute at the Woods Hole Oceanographic Institution. en_US
dc.format.mimetype application/pdf
dc.identifier.citation Journal of Geophysical Research: Oceans 119 (2014): 8838–8857 en_US
dc.identifier.doi 10.1002/2014JC010134
dc.identifier.uri https://hdl.handle.net/1912/7158
dc.language.iso en_US en_US
dc.publisher John Wiley & Sons en_US
dc.relation.uri https://doi.org/10.1002/2014JC010134
dc.subject Greenland en_US
dc.subject Freshwater en_US
dc.subject Coastal current en_US
dc.subject Fjord en_US
dc.title Moored observations of synoptic and seasonal variability in the East Greenland Coastal Current en_US
dc.type Article en_US
dspace.entity.type Publication
relation.isAuthorOfPublication d6e4e161-c767-4e57-ac65-b60068c6c2ce
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relation.isAuthorOfPublication.latestForDiscovery d6e4e161-c767-4e57-ac65-b60068c6c2ce
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