Details of Award
NERC Reference : NER/B/S/2002/00567
The vortex dynamics of the polar vortex-Aleutian high system: a systematic study of stability and non-linear interaction.
Grant Award
- Principal Investigator:
- Professor DG Dritschel, University of St Andrews, Mathematics and Statistics
- Grant held at:
- University of St Andrews, Mathematics and Statistics
- Science Area:
- Atmospheric
- Overall Classification:
- Atmospheric
- ENRIs:
- Natural Resource Management
- Global Change
- Environmental Risks and Hazards
- Science Topics:
- Stratospheric Processes
- Regional & Extreme Weather
- Abstract:
- We consider an idealised model of the winter stratospheric polar vortex and Aleutian high, consisting of two asymmetric, oppositely signed volumes of uniform potential vorticity in three-dimensional stratified quasi-geostrophic flow. An examination of the stability of the system, using adiabatic methods, will identify the parameter regimes in which strong vortex interactions may occur. The full nonlinear evolution of these interactions will then be investigated numerically using the contour advective semi-Lagrangian method. The goal is to clarify, in the simplest possible model, the role of anticyclonic circulations such as the Aleutian high in the onset of stratospheric sudden warmings and to develop a quantitative description of the nonlinear process involved.
- NERC Reference:
- NER/B/S/2002/00567
- Grant Stage:
- Completed
- Scheme:
- Small Grants Pre FEC
- Grant Status:
- Closed
- Programme:
- Small Grants
This grant award has a total value of £24,737
FDAB - Financial Details (Award breakdown by headings)
| Total - T&S | Total - Staff | Total - Other Costs | Total - Indirect Costs |
|---|---|---|---|
| £513 | £16,241 | £513 | £7,471 |
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