Tropopause potential vorticity and 700-500 mb frontogenesis
Notes:
This slide shows the juxtaposition of the upper wave, as indicated by high tropopause pressures, and lower-to-mid tropopsheric frontal scale forcing, as indicated by the shaded frontogenesis. Strongest forcing for upward motion and heavy precipitation would be in areas where positive pressure advection became juxtaposed with frontogenetical forcing (near or on the warm side of the frontogenesis). The best combination of these two factors appeared to come together over northeast Pennsylvania and central New York around 06z on the 7th.
|
Switch images by moving your mouse pointer over the links below...
Valid Mon 0000 UTC 07-Mar-2011 Valid Mon 0600 UTC 07-Mar-2011 Valid Mon 1200 UTC 07-Mar-2011 |
|
Slide 13