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Title: Impact of data assimilation on Eulerian versus Lagrangian estimates of upper ocean transport

Journal Article · · Journal of Geophysical Research. Oceans
DOI:https://doi.org/10.1002/2016JC012640· OSTI ID:1461513

Using four-dimensional variational analysis, we produce an estimate of the state of a coastalregion in Northern Norway during the late winter and spring in 1984. We use satellite sea surface tempera-ture and in situ observations from a series of intensive field campaigns, and obtain a more realistic distribu-tion of water masses both in the horizontal and the vertical than a pure downscaling approach can achieve.Although the distribution of Eulerian surface current speeds are similar, we find that they are more variableand less dependent on model bathymetry in our reanalysis compared to a hindcast produced using thesame modeling system. Furthermore, Lagrangian drift currents on the other hand are significantly changed, with overallhigher kinetic energy levels in the reanalysis than in the hindcast, particularly in the superinertial frequencyband.

Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE
OSTI ID:
1461513
Journal Information:
Journal of Geophysical Research. Oceans, Vol. 122, Issue 7; ISSN 2169-9275
Publisher:
American Geophysical UnionCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (5)

Subsurface maxima in buoyant fish eggs indicate vertical velocity shear and spatially limited spawning grounds: Subsurface maxima in buoyant fish eggs journal December 2018
A Transport Method for Restoring Incomplete Ocean Current Measurements journal January 2019
The Northeast Greenland Shelf as a Potential Habitat for the Northeast Arctic Cod journal September 2017
The effect of vertical mixing on the horizontal drift of oil spills journal January 2018
A transport method for restoring incomplete ocean current measurements text January 2018