Skip to Main content Skip to Navigation
Journal articles

The parameterization of baroclinic instability in a simple model

Abstract : Baroclinic instability of zonally forced ow in a two mode quasi-geostrophic numerical model with periodic boundary conditions is considered. Only the largest scale of the baroclinic mode is forced and the scale dependence of a diffusive parameterization of baroclinic layer thickness is determined. It is shown that the effect of baroclinic instability is a decreasing function of scale with an exponent of about half of that corresponding to the commonly used Laplace operator. We furthermore show that there is no linear relation between the time averaged amplitude of the large scale streamfunction (or quasi-geostrophicpotential vorticity) and the bolus velocity.
Document type :
Journal articles
Complete list of metadata

https://hal.archives-ouvertes.fr/hal-00547881
Contributor : Achim Wirth Connect in order to contact the contributor
Submitted on : Thursday, November 19, 2020 - 8:22:52 AM
Last modification on : Wednesday, October 20, 2021 - 12:58:17 AM
Long-term archiving on: : Saturday, February 20, 2021 - 6:23:44 PM

File

wirth_gm.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-00547881, version 1

Collections

UGA | CNRS | LEGI

Citation

Achim Wirth. The parameterization of baroclinic instability in a simple model. Journal of marine research, Yale University, 2000, 58, pp.571--583. ⟨hal-00547881⟩

Share

Metrics

Record views

67

Files downloads

19