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Arctic cyclones more common than previously thought
Date:1/16/2014

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 of these Arctic storms than previously thought, according to a new study of vast troves of weather data that previously were synthesized at the Ohio Supercomputer Center (OSC).

A 40 percent difference in the number of cyclones could be important to anyone who lives north of 55 degrees latitude the area of the study, which includes the northern reaches of Canada, Scandinavia and Russia, along with the state of Alaska.

The finding is also important to researchers who want to get a clear picture of current weather patterns, and a better understanding of potential climate change in the future, explained David Bromwich, Ph.D., professor of geography at The Ohio State University and senior research scientist at the Byrd Polar Research Center.

The cyclone study was presented at the American Geophysical Union meeting in December, in a poster co-authored by his colleagues Natalia Tilinina and Sergey Gulev of the Russian Academy of Sciences and Moscow State University.

"We now know there were more cyclones than previously thought, simply because we've gotten better at detecting them," said Bromwich, who amassed the weather database and consulted on the cyclone study.

Cyclones are zones of low atmospheric pressure that have wind circulating around them. They can form over land or water, and go by different names depending on their size and where they are located. In Columbus, Ohio, for instance, a low-pressure system in December would simply be called a winter storm. Extreme low-pressure systems formed in the tropical waters can be called hurricanes or typhoons.

How could anyone miss a storm as big as a cyclone? You might think they are easy to detect, but as it turns out, many of the cyclones that were missed we
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Contact: Jamie Abel
jabel@oh-tech.org
614-292-6495
Ohio Supercomputer Center
Source:Eurekalert  

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Arctic cyclones more common than previously thought
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