Arctic cyclones

“From 2000 to 2010, about 1,900 cyclones churned across the top of the world each year, leaving warm water and air in their wakes—and melting sea ice in the Arctic Ocean. That’s about 40 percent more than previously thought, according to a new analysis of these Arctic storms.”

Now this isn’t 40% more, although that’s how it will probably be reported, is my guess.  Researchers from Ohio State don’t know if that’s more or fewer cyclones than before, because they’ve only been measuring for 10 years.  Some they have discovered are very small, some in unpopulated areas and previously went undetected.

“We can’t yet tell if the number of cyclones is increasing or decreasing, because that would take a multidecade view. We do know that, since 2000, there have been a lot of rapid changes in the Arctic—Greenland ice melting, tundra thawing—so we can say that we’re capturing a good view of what’s happening in the Arctic during the current time of rapid changes,”

http://researchnews.osu.edu/archive/arcticcyclones.htm