The following plots show contours of vertical velocity (left column) and vertical vorticity (right column) during the genesis and mature stage of the disturbances. In each plot, the contours of geopotential are shown, as is the location of the minimum geopotential (denoted by the cyclone symbol). Contour levels for vertical velocity are: thick red contours 0.5 and 1.0 m s-1; thick yellow contours 1.5 - 5.0 m s-1 in steps of 0.5 m s-1; thick blue contours -1.0 and -0.5 m s-1; thin countours 5 cm s-1 - 45 cm s-1 in steps of 5 cm s-1. Negative contours blue/dashed. Regions of ascent > 5 cm s-1 are shaded pink; regions of subsidence < -5 cm s-1 shaded light blue. Contour levels for vertical vorticity are: thick contours 10-4 s-1 s-1; thin contours 2*10-5 s-1; Negative contours blue/dashed. Regions of cyclonic > 2*10-5 s-1 are shaded pink; regions of anticyclonic vorticity < -2*10-5 s-1 shaded light blue.
12 Feb 00Z | 12 Feb 00Z |
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12 Feb 06Z | 12 Feb 06Z |
12 Feb 12Z | 12 Feb 12Z |
12 Feb 18Z | 12 Feb 18Z |
13 Feb 00Z | 13 Feb 00Z |
13 Feb 06Z | 13 Feb 06Z |
13 Feb 12Z | 13 Feb 12Z |
13 Feb 18Z | 13 Feb 18Z |
14 Feb 00Z | 14 Feb 00Z |
14 Feb 06Z | 14 Feb 06Z |
14 Feb 12Z | 14 Feb 12Z |
14 Feb 18Z | 14 Feb 18Z |
15 Feb 00Z | 15 Feb 00Z |
15 Feb 06Z | 15 Feb 06Z |
15 Feb 12Z | 15 Feb 12Z |
Copyright © Roger Smith