Deutsch
 
Datenschutzhinweis Impressum
  DetailsucheBrowse
  1. Start / 
  2. Datensatz Übersicht

Datensatz

DATENSATZ AKTIONENEXPORT
Zur Ablage hinzufügen
  Lokale TagsFreigabegeschichteDetailsÜbersicht

Freigegeben
Zeitschriftenartikel

Coupled bistable maps: A tool to study convection parametrization in ocean models

Urheber*innen

Lind,  P.G.
External Organizations;

Titz,  S.
External Organizations;

/persons/resource/till.kuhlbrodt

Kuhlbrodt,  Till
Potsdam Institute for Climate Impact Research;

Corte-Real,  J.A.
External Organizations;

/persons/resource/Juergen.Kurths

Kurths,  Jürgen
Potsdam Institute for Climate Impact Research;

Gallas,  J.A.C.
External Organizations;

Feudel,  U.
External Organizations;

Externe Ressourcen
Es sind keine externen Ressourcen hinterlegt
Volltexte (frei zugänglich)
Es sind keine frei zugänglichen Volltexte in PIKpublic verfügbar
Ergänzendes Material (frei zugänglich)
Es sind keine frei zugänglichen Ergänzenden Materialien verfügbar
Zitation

Lind, P., Titz, S., Kuhlbrodt, T., Corte-Real, J., Kurths, J., Gallas, J., Feudel, U. (2004): Coupled bistable maps: A tool to study convection parametrization in ocean models. - International Journal of Bifurcation and Chaos, 14, 3, 999-1015.
https://doi.org/10.1142/S0218127404009648


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_12159
Zusammenfassung
We present a study of ocean convection parameterization based on a novel approach which includes both eddy diffusion and advection and consists of a two-dimensional lattice of bistable maps. This approach retains important features of usual grid models and allows to assess the relative roles of diffusion and advection in the spreading of convective cells. For large diffusion our model exhibits a phase transition from convective patterns to a homogeneous state over the entire lattice. In hysteresis experiments we find staircase behavior depending on stability thresholds of local convection patterns. This nonphysical behavior is suspected to induce spurious abrupt changes in the spreading of convection in ocean models. The final steady state of convective cells depends not only on the magnitude of the advective velocity but also on its direction, implying a possible bias in the development of convective patterns. Such bias points to the need for an appropriate choice of grid geometry in ocean modeling.