Western North Pacific Tropical Cyclone Intensity and ENSO

1
Western North Pacific Tropical Cyclone Intensity
and ENSO

• Suzana J. Camargo and Adam H. Sobel
• ???, ???, T8

????
2
Outline of Nino3.4 index and ACE (Accumulated
Cyclone Energy)
ACE index the sum of the squares of the
estimated 6-hourly maximum sustained surface wind
speed for all tropical cyclones (m/s)2 in the
Western North Pacific (0-17N, 140E-180)
3
ACE highly correlated with Nino3.4
4
Lag correlation between ACE and ENSO indices
5
ACE as revealed for monthes or ENSO seasons
6
ACE per TC distribution
7
ACE for divided TC categories (continued)
8
ACE for divided TC categories (continued)
9
ACE for divided TC categories (Correlations)
10
Numbers of the divided CT categories
11
Total days of TC for ENSO seasons
12
Lifetime of TC for ENSO seasons
13
Contributions of each component of ACE lifetime
and intensity
14
Number of intense hurricane days and NINO3.4 JASO
15
Maximum wind speed per tropical cyclone
16
Interpretation
Lifetime of TC ?
ACE ?
Number of TC
Elnino
Number of HITC ?
Intensity of TC ?