H2Otown_WX Posted November 16, 2012 Share Posted November 16, 2012 Okay, I'm making a little post about potential vorticity. The way my professor described it (and I assume this is highly simplified) is that air near the equator has very low cyclonic vorticity but as it is advected north, its relative vorticity obviously increases since f increases with latitude. And since the expression for potential vorticity is: (C_r + f)/h and it is conserved, the height of air parcels must increase as they gain latitude. Since this class I'm in is a theoretical hydrodynamics class, we didn't go into the value of applying potential vorticity to operational forecasting. If anyone could give me some input on that it would be much appreciated. Link to comment Share on other sites More sharing options...
Amped Posted November 17, 2012 Share Posted November 17, 2012 With the hires models the PV handling isn't much of an issue now it was 15 years ago. Sometimes models in the MR are too weak with the northern Jet and there is a bigger bomb then expected. I don't know how much of it has to do with them underestimating the PV of the disturbances though. Link to comment Share on other sites More sharing options...
dendrite Posted November 17, 2012 Share Posted November 17, 2012 Okay, I'm making a little post about potential vorticity. The way my professor described it (and I assume this is highly simplified) is that air near the equator has very low cyclonic vorticity but as it is advected north, its relative vorticity obviously increases since f increases with latitude. And since the exp<b></b>ression for potential vorticity is: (C_r + f)/h and it is conserved, the height of air parcels must increase as they gain latitude. Since this class I'm in is a theoretical hydrodynamics class, we didn't go into the value of applying potential vorticity to operational forecasting. If anyone could give me some input on that it would be much appreciated. When you get some time, this page bridges some PV theory with operational.http://www.atmos.illinois.edu/~snesbitt/ATMS505/stuff/12%20IPV.pdf Link to comment Share on other sites More sharing options...
H2Otown_WX Posted November 18, 2012 Author Share Posted November 18, 2012 When you get some time, this page bridges some PV theory with operational. http://www.atmos.ill...tuff/12 IPV.pdf Thanks Dendrite. Just scanning through it quickly, looks pretty in-depth. I will give it a closer look when I have the time. Link to comment Share on other sites More sharing options...
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