|
Table 2. As in Table 1 but for normalized values of named storms (NS), named storm days (NSD), hurricanes (H), hurricane days (HD), major hurricanes (MH), major hurricane days (MHD) and Accumulated Cyclone Energy (ACE) generated by all tropical cyclones forming in each phase of the MJO over the period from 1974-2007. Normalized values are calculated by dividing storm activity by the number of days spent in each phase and then multiplying by 100. This basically provides the level of TC activity that would be expected for 100 days given a particular MJO phase.
MJO Phase
|
NS
|
NSD
|
H
|
HD
|
MH
|
MHD
|
ACE
|
Phase 1
|
6.4
|
35.9
|
3.7
|
17.9
|
1.8
|
5.3
|
76.2
|
Phase 2
|
7.5
|
43.0
|
5.0
|
18.4
|
2.1
|
4.6
|
76.7
|
Phase 3
|
6.3
|
30.8
|
3.0
|
14.7
|
1.4
|
2.8
|
56.0
|
Phase 4
|
5.1
|
25.5
|
3.5
|
12.3
|
1.0
|
2.8
|
49.4
|
Phase 5
|
5.1
|
22.6
|
2.9
|
9.5
|
1.2
|
2.1
|
40.0
|
Phase 6
|
5.3
|
24.4
|
3.2
|
7.8
|
0.8
|
1.1
|
35.7
|
Phase 7
|
3.6
|
18.1
|
1.8
|
7.2
|
1.1
|
2.0
|
33.2
|
Phase 8
|
6.2
|
27.0
|
3.3
|
10.4
|
0.9
|
2.6
|
46.8
|
|
|
|
|
|
|
|
|
Phase 1-2
|
7.0
|
39.4
|
4.3
|
18.1
|
1.9
|
4.9
|
76.5
|
Phase 6-7
|
4.5
|
21.5
|
2.5
|
7.5
|
1.0
|
1.5
|
34.6
|
|
|
|
|
|
|
|
|
Phase 1-2 / Phase 6-7
|
1.6
|
1.8
|
1.7
|
2.4
|
2.0
|
3.2
|
2.2
|
|
|
|
|
|
|
|
|
|
|
MJO Index > 1
|
|
|
|
|
|
|
|
|
|
|
|
Phase 1
|
6.3
|
37.6
|
4.0
|
19.5
|
1.7
|
5.9
|
84.3
|
Phase 2
|
8.5
|
50.8
|
6.2
|
19.2
|
2.5
|
3.8
|
81.2
|
Phase 3
|
6.6
|
30.4
|
2.7
|
13.9
|
1.5
|
1.9
|
50.5
|
Phase 4
|
6.5
|
33.7
|
5.1
|
17.9
|
1.6
|
3.3
|
65.0
|
Phase 5
|
5.3
|
23.2
|
3.0
|
10.0
|
1.2
|
2.3
|
42.3
|
Phase 6
|
4.7
|
22.1
|
2.5
|
6.4
|
0.8
|
0.9
|
31.3
|
Phase 7
|
3.5
|
16.6
|
1.9
|
6.4
|
1.0
|
0.9
|
28.3
|
Phase 8
|
5.4
|
23.3
|
2.3
|
8.4
|
0.9
|
3.1
|
42.4
|
|
|
|
|
|
|
|
|
Phase 1-2
|
7.3
|
43.8
|
5.1
|
19.4
|
2.1
|
4.9
|
82.8
|
Phase 6-7
|
4.2
|
20.0
|
2.3
|
6.4
|
0.9
|
0.9
|
30.1
|
|
|
|
|
|
|
|
|
Phase 1-2 / Phase 6-7
|
1.7
|
2.2
|
2.2
|
3.0
|
2.4
|
5.5
|
2.8
|
Table 3. As in Table 1 but for all tropical cyclones forming in the MDR from 1974-2007.
MJO Phase
|
NS
|
NSD
|
H
|
HD
|
MH
|
MHD
|
ACE
|
Phase 1
|
2.7
|
22.9
|
2.3
|
13.5
|
1.4
|
4.9
|
57.5
|
Phase 2
|
3.0
|
24.7
|
2.5
|
13.2
|
1.8
|
4.2
|
53.0
|
Phase 3
|
2.6
|
19.8
|
1.7
|
12.1
|
0.9
|
2.1
|
41.4
|
Phase 4
|
1.7
|
12.1
|
1.1
|
8.1
|
0.7
|
2.7
|
32.0
|
Phase 5
|
2.7
|
14.8
|
1.6
|
6.3
|
0.7
|
1.3
|
25.7
|
Phase 6
|
2.6
|
13.1
|
1.2
|
3.9
|
0.6
|
0.9
|
20.3
|
Phase 7
|
1.6
|
9.4
|
0.6
|
3.7
|
0.5
|
1.1
|
17.5
|
Phase 8
|
1.9
|
12.2
|
1.1
|
6.5
|
0.6
|
1.9
|
25.3
|
|
|
|
|
|
|
|
|
Phase 1-2
|
2.9
|
23.8
|
2.4
|
13.3
|
1.6
|
4.5
|
55.3
|
Phase 6-7
|
2.2
|
11.4
|
1.0
|
3.8
|
0.5
|
1.0
|
19.0
|
|
|
|
|
|
|
|
|
Phase 1-2 / Phase 6-7
|
1.3
|
2.1
|
2.5
|
3.5
|
3.0
|
4.4
|
2.9
|
|
|
|
|
|
|
|
|
|
|
MJO Index > 1
|
|
|
|
|
|
|
|
|
|
|
|
Phase 1
|
2.8
|
25.7
|
2.4
|
16.2
|
1.6
|
5.7
|
68.6
|
Phase 2
|
3.9
|
28.9
|
3.3
|
13.3
|
2.1
|
3.6
|
54.8
|
Phase 3
|
2.7
|
21.0
|
1.8
|
12.3
|
1.2
|
1.3
|
39.3
|
Phase 4
|
2.7
|
18.8
|
1.9
|
12.6
|
1.1
|
3.1
|
44.4
|
Phase 5
|
2.6
|
14.5
|
1.6
|
6.4
|
0.7
|
1.2
|
25.9
|
Phase 6
|
2.5
|
14.7
|
1.5
|
4.9
|
0.6
|
0.7
|
22.2
|
Phase 7
|
1.6
|
7.1
|
0.6
|
2.7
|
0.3
|
0.2
|
11.3
|
Phase 8
|
1.4
|
9.1
|
0.6
|
4.7
|
0.6
|
2.9
|
22.1
|
|
|
|
|
|
|
|
|
Phase 1-2
|
3.3
|
27.2
|
2.8
|
14.8
|
1.8
|
4.7
|
62.1
|
Phase 6-7
|
2.2
|
11.7
|
1.1
|
4.0
|
0.5
|
0.5
|
17.9
|
|
|
|
|
|
|
|
|
Phase 1-2 / Phase 6-7
|
1.5
|
2.3
|
2.5
|
3.7
|
3.6
|
9.2
|
3.5
|
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