Over het archief
Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.
Dit archief wordt uitgebouwd en beheerd volgens de principes van de Open Access Movement, en het daaruit ontstane Open Archives Initiative.
Basisinformatie over ‘Open Access to scholarly information'.
Multistability in a coupled ocean-atmosphere reduced‐order model: nonlinear temperature equations
Hamilton, O.; Demaeyer, J.; Vannitsem, S.; Crucifix, M. (2023). Multistability in a coupled ocean-atmosphere reduced‐order model: nonlinear temperature equations. Q. J. R. Meteorol. Soc. 149(757): 3423-3439. https://dx.doi.org/10.1002/qj.4564
In: Quarterly Journal of the Royal Meteorological Society. Royal Meteorological Society: Bracknell, Berks. ISSN 0035-9009; e-ISSN 1477-870X, meer
|   |
| Abstract |
Multistabilities in the ocean–atmosphere flow were found in a reduced-order ocean–atmosphere coupled model, by solving the nonlinear temperature equations numerically. In this article, we explain how the full nonlinear Stefan–Bolzmann law was implemented numerically and the resulting change to the system dynamics was compared with the original model where these terms were linearised. Multiple stable solutions were found that display distinct ocean–atmosphere flows, as well as different Lyapunov stability properties. In addition, distinct low-frequency variability (LFV) behaviour was observed in multiple attractors. We investigated the impact on these solutions of changing the magnitude of the ocean–atmospheric coupling, as well as the atmospheric emissivity, to simulate an increasing greenhouse effect. Where multistabilities exist for fixed parameters, the possibility for tipping between solutions was investigated, but tipping did not occur in this version of the model where there is a constant solar forcing. This study was undertaken using a reduced-order coupled quasigeostrophic ocean–atmosphere model. |
IMIS is ontwikkeld en wordt gehost door het VLIZ.
