Potential Vorticity Estimates in the South Polar Vortex from ER-2 Data
Hartmann, R. Chan, B. L. Gary, M. R. Schroeberl, P. Newman, R. L. Martin, M. Loewenstein, J. Podolske, and S. Strahan (1989), Potential Vorticity Estimates in the South Polar Vortex from ER-2 Data, J. Geophys. Res., 94, 11,625-11.