By Timothy Gardner

NEW YORK (Reuters) - Eight scientific organizations urged the next U.S. president to help protect the country from climate change by pushing for increased funding for research and forecasting, saying about $2 trillion of U.S. economic output could be hurt by storms, floods and droughts.

"We don't think we have the right kind of tools to help decision makers plan for the future," Jack Fellows, the vice president for corporate affairs of the University Corporation for Atmospheric Research, a consortium of 71 universities, told reporters in a teleconference on Wednesday.

The groups, including the American Geophysical Union and the American Meteorological Society, urged Democratic presidential candidate Barack Obama and Republican rival John McCain to support $9 billion in investments between 2010 and 2014 to help protect the country from extreme weather, which would nearly double the current U.S. budget for the area.

The U.N.'s science panel says extreme weather events could hit more often as temperatures rise due to climate change.

Each year the United States suffers billions of dollars in weather-related damages ranging from widespread events like Hurricanes Katrina and Rita, and the more recent droughts in the Southeast, to smaller, more frequent glitches like airline delays from storms, they said.

More than a quarter of the country's economic output, about $2 trillion, is vulnerable to extreme weather, they added.

The investments would pay for satellite and ground-based instruments that observe the Earth's climate and for computers to help make weather predictions more accurate.

John Snow, the co-chairman of the Weather Coalition, a business and university group that advocates for better weather prediction, said improved computers would help scientists forecast extreme weather events more locally, which could help cities better prepare for weather disasters.