This post is for those interested in the research on polar vortices and oscillations.

The abstract and introduction of this paper are a short primer:

http://ao.atmos.colostate.edu/ThompsonPapers/Limpasuvan_etal_JGR2005.pdf

More articles related to this topic are available in pdf format on the CV of Dr. David W. J. Thompson:

http://www.atmos.colostate.edu/~davet/