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| Titel |
Oceanic Interior Mesoscale Turbulence Revealed by ARGO Floats |
| VerfasserIn |
Guillaume Roullet, Guillaume Maze, Xavier Capet |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250073734
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| Zusammenfassung |
| By combining the ARGO profiles from the whole database it is possible to estimate the
empirical density function of the potential density over most of the World Ocean. This
function contains all the information about the statistics of isopycnals at a given place and for
a certain period of time (monthly, seasonal or annual). Many interesting quantities can be
derived from it: mean density, isopycnal displacement rms, eddy available potential energy
(EAPE). This latter quantity is the analog of the eddy kinetic energy (EKE) but for the
potential energy reservoir. EAPE is dominated by the expression of mesoscale turbulence and
reveals its spatial (horizontal and vertical) structure and magnitude. It shares strong
similarities with the surface EKE, the so far sole proxy of mesoscale turbulence, and
presents the chief novelty of qualifying the turbulence in the ocean interior from a
statistical point of view. Eddy resolving regional and general circulation models would
benefit from systematic evaluation against such EAPE fields derived from ARGO. |
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