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| Titel |
Modeling the effects of size on patch dynamics of an inert tracer |
| VerfasserIn |
P. Xiu, F. Chai |
| 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 ; 6, no. 1 ; Nr. 6, no. 1 (2010-03-26), S.413-421 |
| Datensatznummer |
250003369
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| Publikation (Nr.) |
 copernicus.org/os-6-413-2010.pdf |
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| Zusammenfassung |
| Mesoscale iron enrichment experiments have revealed that additional iron
affects the phytoplankton productivity and carbon cycle. However, the role
of initial size of fertilized patch in determining the patch evolution is
poorly quantified due to the limited observational capability and complex of
physical processes. Using a three-dimensional ocean circulation model, we
simulated different sizes of inert tracer patches that were only regulated
by physical circulation and diffusion. Model results showed that during the
first few days since release of inert tracer, the calculated dilution rate
was found to be a linear function with time, which was sensitive to the
initial patch size with steeper slope for smaller size patch. After the
initial phase of rapid decay, the relationship between dilution rate and
time became an exponential function, which was also size dependent.
Therefore, larger initial size patches can usually last longer and
ultimately affect biogeochemical processes much stronger than smaller
patches. |
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