01-01.pdf (467.68 kB)
0/0

Thermobaric flow

Download (467.68 kB)
preprint
posted on 16.01.2006 by Anthony Kay
Simple model flows demonstrating the combined effect of thermobaricity with either salinity variations or nonlinear temperature-dependence in the equation of state of water are investigated. An inviscid flow exhibits a three-layer behaviour, resulting in the formation of a mid-depth temperature maximum, such as is observed in some high-latitude oceans and deep lakes. This may be subsequently overtaken by nonlinear frontogenesis, which in the viscous case is shown to generate a thermal bar. Thermobaricity shifts the thermal bar towards the colder water, and initially produces a slope in the downwelling plume, but this transient feature disappears as the dominant frontogenesis tilts the plume backto the vertical.

History

School

  • Science

Department

  • Mathematical Sciences

Pages

478908 bytes

Publication date

2001

Notes

This is a pre-print of an article which appeared in the journal, Dynamics of Atmospheres and Oceans [© Elsevier]. The definitive version: KAY, A., 2001. Thermobaric flow. Dynamics of Atmospheres and Oceans, 34(2-4), pp. 263-289, is available at: http://www.sciencedirect.com/science/journal/03770265

Language

en

Exports