On the mix-down times of dynamically active potential vorticity filaments.
Geophysical Research Letters
2953 - 2956.
Available under License : See the attached licence file.
A simple model is used to study the evolution of potential vorticity filaments, viewed in cross-section, subject to steady shear and deformation flows representative of the large-scale atmospheric circulation. It is found that the balanced, ageostrophic circulation induced by the anomalous potential vorticity can cause the evolution of a dynamically active filament to differ substantially from that of a dynamically passive filament in a similar background flow. It is suggested that estimates of the mix-down time of material contained in atmospheric filaments need to be corrected to allow for this effect.
|Title:||On the mix-down times of dynamically active potential vorticity filaments|
|Open access status:||An open access version is available from UCL Discovery|
|Additional information:||Copyright 1999 by the American Geophysical Union|
|UCL classification:||UCL > School of BEAMS
UCL > School of BEAMS > Faculty of Maths and Physical Sciences
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