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  Offshore transport and vertical exchange by mesoscale ocean eddies in an eastern boundary upwelling system

Fischer, T., Karstensen, J., Dengler, M., Dilmahamod, F. (2023): Offshore transport and vertical exchange by mesoscale ocean eddies in an eastern boundary upwelling system, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4889

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 Creators:
Fischer, Tim1, Author
Karstensen, Johannes1, Author
Dengler, Marcus1, Author
Dilmahamod, Fehmi1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: Important effects of mesoscale eddies in eastern boundary upwelling systems (EBUS) are offshore transport of coastal water and vertical exchange between the mixed layer and below. In our contribution we reconstruct the 3-D structure of several cyclonic eddies and anticyclonic modewater eddies in the Canary EBUS from in situ velocity observations, based on different survey patterns of different durations. The reconstructions include derived dynamic properties such as vorticity and divergence, so that trapping radii and shallow secondary circulation can be estimated. Common features of the eddies are used to extrapolate on the offshore transport and vertical exchange caused by EBUS eddies. Some collateral insights from these investigations include that (i) a few inertial periods of observation time are needed to estimate vertical velocity, and (ii) all observed eddies have a radius very similar to the Rossby radius, as opposed to the larger variability in size that satellite products suggest.

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Language(s): eng - English
 Dates: 2023-07-112023-07-11
 Publication Status: Finally published
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 Identifiers: DOI: 10.57757/IUGG23-4889
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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
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