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| Titel |
The role of mesoscale eddies time and length scales on phytoplankton production |
| VerfasserIn |
V. Pérez-Muñuzuri, F. Huhn |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 17, no. 2 ; Nr. 17, no. 2 (2010-03-31), S.177-186 |
| Datensatznummer |
250013662
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| Publikation (Nr.) |
 copernicus.org/npg-17-177-2010.pdf |
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| Zusammenfassung |
| Horizontal mixing has been found to play a crucial role in the
development of spatial plankton structures in the ocean. We study
the influence of time and length scales of two different horizontal
two-dimensional (2-D) flows on the growth of a single phytoplankton
patch. To that end, we use a coupled model consisting of a standard
three component ecological NPZ model and a flow model able to mimic
the mesoscale structures observed in the ocean. Two hydrodynamic
flow models are used: a flow based on Gaussian correlated noise, for
which the Eulerian length and time scales can be easily controlled,
and a multiscale velocity field derived from altimetry data in the
North Atlantic ocean. We find the optimal time and length scales for
the Gaussian flow model favouring the plankton spread. These results
are used for an analysis of a more realistic altimetry flow. We
discuss the findings in terms of the time scale of the NPZ model,
the qualitative interaction of the flow with the reaction front and
a Finite-Time Lyapunov Exponent analysis. |
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