PV frontogenesis loops: 13–27 Oct 2010
Loops of PV advection by the irrotational wind: 13–27 Oct 2010
Loops of PV advection by the nondivergent wind: 13–27 Oct 2010
North–south (10°–60°N) cross section loops: 13–27 Oct 2010
250-hPa PV (shaded, PVU), wind (barbs, kt), and PV frontogenesis [black contours, every 1 PVU (100
km)-1 (3 h)-1]
250-hPa PV (shaded, PVU), 600–400-hPa layer averaged ascent (magenta contours, every 5 x 10-3 hPa s-1), and 200–300-hPa irrotational wind (vectors, m s-1) and PV
advection by the irrotational wind (black contours, every 5 PVU day-1)
250-hPa PV (shaded, PVU) and streamfunction (magenta contours, every 10 x 106 m2 s-1), and 200–300-hPa PV advection by the nondivergent wind (black contours, every 10 PVU day-1)
East–west (120°E–180°) cross section loops: 13–27 Oct 2010
East–west (180°–60°W) cross section loops: 13–27 Oct 2010
Potential temperature (blue contours, K), wind (barbs, kt), PV (shaded, PVU), vertical motion (red
contours, every 3 x 10-3 hPa s-1, zero line omitted), and frontogenesis [black contours, every 2 K (100
km)-1 (3 h)-1, starting at 1 K (100 km)-1 (3 h)-1]