Tropical Cyclones
I: Observed characteristics
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Azimuthal wind
Temperature
perturbation at
constant altitude
Radial wind
Vertical velocity
Tropical Atlantic ST versus Total Power Dissipation Index
1.6
HADISST 6−18 N 20−60 W
Atlantic PDI
1.4
1.2
1
0.8
0.6
0.4
0.2
1930
1940
1950
1960
1970
Year
1980
1990
2000
2010
Tropical North Pacific ST versus Total Power Dissipation Index
1.1
HADISST 5−15 N, 130−180 E
WPAC PDI
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
1930
1940
1950
1960
1970
Year
1980
1990
2000
2010
Tropical SST versus ATL and NWP Total Power Dissipation Index
1
Atlantic + WPAC PDI
Annual mean HADISST, 30S−30N
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1940
1950
1960
1970
Year
1980
1990
2000
2010
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12.811 Tropical Meteorology
Spring 2011
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