Greg, I kept what I showed you yesterday and incorporated the new plots for today
into it with this table. The new plots are in the column highlighted in red with "New." In these calculations, I used both
a forward and centered difference, as well as following the gridpoint at the center and for averaging within the 280 K
tropopause theta contour. The difference with these is as discussed today, where I took the EPV differences following the
vortex instead of the EPV differences at one gridpoint. I don't know what went wrong here, espeically for in the upper
levels. I'll sit on this and think more about what could be wrong tonight, just wanted to show you...it's a pretty simple
calculation so I'm not sure what could be wrong. Any thoughts?
Old plots. First set shows the scaling of the diabatic contributions compared to full epv tendency. Second set
shows diabatic + advection contributions except with average winds at time t used in advection term.
Third set shows diabatic + advection contributions except using adv(pvor) in GEMPAK as advection term.
Please download a PDF that explains these plots here. They have to do with verifying the tendencies as
we discussed last week. The first section is a bit detailed and really just goes through how I made the plots in gory
detail, and the second section gives the bottom line results of what is plotted.
Profiles without advection. These give the scales of the changes in EPV compared with the changes due to the diabatic tendencies.
Profiles with advection I: Calculating PV advection as discussed in the .pdf. The green line should at least be
close to the red line, however it isn't really, especially in the upper levels.