World Map of Lightning Activity
Ian writes "NewScientist.com is >reporting that you can now see the lightning activity on the entire planet Earth at one time. The article states, "The NASA map also shows that lightning very rarely occurs at sea and is almost never seen at the Earth's poles." Anyone care to speculate on why that is?"
Yeah, I know it's sort of egocentric for we Americans, but you can visit http://www.lightningstorm.com/ls2/gpg/lex1/mapdisp lay_free.jsp?jrunsessionid=1007697160371304360 to see recent lightening activity in the continental US. When things are lively, you can see a lot of really nifty patterns with the fronts.
Care to venture a theory as to why there would be gradient patches of BOTH white and grey on that map, then? Maybe grey is where they didn't take measurements, and white is where the really, really didn't take measurements. ;-)
sPh