Ryan Maue 2008 Tropical Conference Powerpoint
Current Global TC Activity is ONE: Rammasun is undergoing extratropical transition in the Western Pacific.
In the wake of Rammasun, additional TC development is favored. (a possible Midget-typhoon in the South China Sea)
Recent TC Activity (Updated May 12, 2008)
| Basin | 2008 ACE | CLIMO ACE | % of NORMAL | 2007 ACE | 2006 ACE |
| Western Pacific | 25.0 | 16.8 | 148% | 209 | 307 |
| Eastern Pacific | 0.0 | 0.4 | 0% | 52 | 157 |
| North Atlantic | 0.0 | 0.3 | 0% | 68 | 79 |
| North Indian | 14.4 | 3.0 | 480% | 44 | 11 |
| Northern Hemisphere | 39.0 | 20.4 | 191% | 373 | 554 |
| Southern Hemisphere | 225 | 236 | 95% | 310 | |
| Planet Earth | 570 | 844 | 67% |
Review: 2007 Tropical Cyclone Activity
Analysis of integrated global hurricane activity shows that the previous 12-24 months exemplify a continuing decreasing trend since 1997. Since tropical
cyclones occur planetwide throughout the calendar, moving averages of cyclone energy are used to show the global nature of earth's cyclone energy.
Global Accumulated Cyclone Energy for each calendar month from 1977 to March 2008.
Global Running Sum
The current 12-month running sum of ACE for the globe is 570 for April 2007 - April 15, 2008. Previously, Mar 2007 - Mar 2008 was 609 and Feb 2007 - Feb 2008 was 630. The mean and standard deviation of this metric (global 12 month running sum ACE) is mean = 844 and sigma = 150 (1977-2007).