Evan, Evan, Evan....
Here are the global Tropical surface temperatures according to the University of Alabama at Huntsville.
See Link: http://www.nsstc.uah.edu/data/msu/v6.0/tlt/uahncdc_lt_6.0.txt

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Which dramatic temperature increase are you talking about? The one where this month's global tropical temp is less than what is was in 1983? <img src="http://www.traveltalkonline.com/forums/images/graemlins/jester.gif" alt="" />