polar_stereographic
-3800.              # Left  edge of projection area (km)
 3800.              # Right edge of projection area (km)
 12.5               # Projection grid increment (left->right)
-5500.              # Bottom edge of projection area (km)
 5500.              # Top    edge of projection area (km)
 12.5               # Projection grid increment (bottom->top)
-45.0               # Central longitude of projection 
 90.0               # Central latitude  of projection 
 0.01               # Conversion factor 
 F                  # Rotate vectors to output grid (F=use East/North components, T=along grid)