Date: Tue, 24 Oct 2000 16:30:22 -0500 (CDT) From: Howie Bluestein X-Sender: hblue@rossby.metr.ou.edu To: David Schultz cc: bosart@atmos.albany.edu, hblue@rossby.metr.ou.edu Subject: Re: map discussion items: The Kicker and the Kickee MIME-Version: 1.0 Dave: I don't see how the PV explanation really differs from the vorticity advection explanation. Try looking at the vorticity advection pattern just upstream from the trough that is being kicked out, not the vorticity advection just downstream from the kicker. I have always believed (only a belief, no calculations done!) that as the wavelength between the two troughs decreases, the vorticity advection pattern itself intensifies because the distance between vorticity extrema decreases, so that the gradient in vorticity increases....if the geostrophic wind stays the same, then the vorticity advection should increase. Maybe I'm wrong. You should be able to come up with a QG explanation...resort to IPV thinking should not be required! On the evolution of the convection Sun. night. Beats me! Seems as if what was happening aloft may have been important. No obs there. Howie Cb