Wednesday, November 5, 2008

2008 Atlantic Hurricane Season Withers on the Vine

2008 Atlantic Hurricane Season Withers on the Vine
A new series of posts

Maue, R.N. (2008) Northern Hemisphere Tropical Cyclone Activity
Abstract: Recent historical Northern Hemisphere tropical cyclone inactivity is compared with the strikingly large observed variability during the past three decades. Yearly totals of Northern Hemisphere ACE are highly correlated with boreal spring sea-surface temperatures in the North Pacific Ocean and are representative of an evolving dual-gyre, trans-hemispheric correlation pattern throughout the calendar year. The offsetting nature of EPAC and NATL basin integrated energy and the strong dependence of combined Pacific TC activity upon ENSO suggest a hypothesis that overall Northern Hemisphere TC behavior is largely modulated by global-scale, non-local climate variability.
Fact: There has been one Category 5 Tropical Cyclone in the Northern Hemisphere in 2008 (Jangmi in the WPAC). A total of 8 Category 4+ developed in 2008 (winds > 114 kts+)
Record inactivity continues: Past 24-months of Northern Hemisphere TC activity (ACE) lowest in 30-years

Updated: Global and Northern Hemisphere Accumulated Cyclone Energy: 24 month running sum through October 31, 2008. Note that the year indicated represents the value of ACE through the previous 24-months.

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