Tropical Cyclone Oswald Jan 2013

Track (min geopotential at selected heights)

Intensity 850 mb

Intensity 700 mb

Intensity 500 mb

Vertical velocity, vertical vorticity and geopotential height at 850 mb

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.

17 Jan 00Z	17 Jan 00Z
17 Jan 06Z	17 Jan 06Z
17 Jan 12Z	17 Jan 12Z
17 Jan 18Z	17 Jan 18Z
18 Jan 00Z	18 Jan 00Z
18 Jan 06Z	18 Jan 06Z
18 Jan 12Z	18 Jan 12Z
18 Jan 18Z	18 Jan 18Z
19 Jan 00Z	19 Jan 00Z
19 Jan 06Z	19 Jan 06Z
19 Jan 12Z	19 Jan 12Z
19 Jan 18Z	19 Jan 18Z
20 Jan 00Z	20 Jan 00Z
20 Jan 06Z	20 Jan 06Z
20 Jan 12Z	20 Jan 12Z
20 Jan 18Z	20 Jan 18Z
21 Jan 00Z	21 Jan 00Z
21 Jan 06Z	21 Jan 06Z
21 Jan 12Z	21 Jan 12Z
22 Jan 18Z	22 Jan 18Z
22 Jan 00Z	22 Jan 00Z
22 Jan 06Z	22 Jan 06Z
22 Jan 12Z	22 Jan 12Z
23 Jan 18Z	23 Jan 18Z

Copyright © Roger Smith