Table 1 Differences in the cumulative PDI of TCs and their contributors in the SIO between periods P1 (1994–2007) and P2 (2008–2021)

From: Decreasing trend in destructive potential of tropical cyclones in the South Indian Ocean since the mid-1990s

 

PDI

Intensity

Duration

Frequency

TC days

(×1011 m3s–2)

(m s–1)

(day)

 

(day)

Climatology

3.12

25.64

6.83

16.05

109.17

P1

3.93

25.90

7.38

17.36

126.14

P2

2.81

26.00

6.46

14.57

92.20

Difference

–1.12

0.10

–0.92

–2.79

–33.95

Percent

–28.50

0.38

–12.50

–16.07

–26.91

P-value

0.04

0.59

<0.01

0.03

<0.01

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