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| Titel |
The Rossby radius in the Arctic Ocean |
| VerfasserIn |
A. J. G. Nurser, S. Bacon |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 10, no. 6 ; Nr. 10, no. 6 (2014-11-28), S.967-975 |
| Datensatznummer |
250117095
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| Publikation (Nr.) |
 copernicus.org/os-10-967-2014.pdf |
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| Zusammenfassung |
| The first (and second) baroclinic deformation (or Rossby) radii are
presented north of ~60° N, focusing on deep basins
and shelf seas in the high Arctic Ocean, the Nordic seas, Baffin Bay, Hudson
Bay and the Canadian Arctic Archipelago, derived from climatological ocean
data. In the high Arctic Ocean, the first Rossby radius increases from
~5 km in the Nansen Basin to ~15 km in the
central Canadian Basin. In the shelf seas and elsewhere, values are low
(1–7 km), reflecting weak density stratification, shallow water, or both.
Seasonality strongly impacts the Rossby radius only in shallow seas, where
winter homogenization of the water column can reduce it to below 1 km.
Greater detail is seen in the output from an ice–ocean general circulation
model, of higher resolution than the climatology. To assess the impact of
secular variability, 10 years (2003–2012) of hydrographic stations along
150° W in the Beaufort Gyre are also analysed. The first-mode
Rossby radius increases over this period by ~20%. Finally,
we review the observed scales of Arctic Ocean eddies. |
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