@misc{indiciae5cb6511e5c00,
  title = {On the Origin of Polar Vortex Air},
  author = {Rosenfield, J. E. and Schoeberl, M. R. and Einaudi, Franco},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20020004351},
  note = {Source identifier: 20020004351}
}