Thanks to the addition of two bistatic receivers, we can now obtain dual- or triple- Doppler wind measurements over a few thousand square kilometers, with particularly good coverage in the neighborhood of Montreal's Trudeau Airport.
In this Doppler velocity example as measured by the scanning radar (located beyond the upper-left corner), one can see what looks like a typical mesocyclone signature near the bottom of the 40-km by 40-km image. A look at the wind patterns measured using the scanning radar and the first bistatic receiver however reveals that the circulation in that region is not closed: while the wind does a 180 degree turn from the NW to the SE, the loop is not completed. Horizontal sections made at other altitudes (as well as vertical velocity measurements) suggest the presence of a very complex 3-D circulation.