Today it seems the reason for decreased activity is because of NAO dropping into the negatives, which casues the Norhten Jetstream to be pushed into the favorable area for devlopment of hurricanes, this jetstream (as they call it) causes less moist and colder air to supress tropical devlopment and cause subsidence. Also I believe there is a shortwave trough around the cape verde islands area, if this trough weakens the tropics will regain their activity.
-------------------- "I became insane with horrible periods of sanity"
Edgar Allan Poe
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Re: Tropics Quiet?
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