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The ‘greening’ of the Colorado River Delta

The Colorado River Delta in May, 2014. Photo courtesy NASA.

The Colorado River Delta in May, 2014. Photo courtesy NASA.

Science team tracks effects of historic pulse flow

Staff Report

FRISCO — Last May’s pulse flow in the Colorado River helped revive vegetation along a huge swath of the river’s edge, triggering new plant growth and raising the water table in the delta. After comparing satellite images taken August 2013 with new images from this year, scientists calculated a 23 percent increase in the greenness of riparian zone vegetation. Continue reading

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Can El Niño save California from the drought?

Last week’s Pacific storm dropped near-record rain

The video was created by NASA/NOAA’s GOES Project at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

Staff Report

FRISCO — A weekend storm rolling into Colorado won’t have a direct pineapple connection, but if the powder does pile up, it will be due to a big stream of moisture from the subtropical Pacific ocean that is wrapped into the approaching weather front.

As the National Oceanic and Atmospheric Administration described in a press release, the ‘Pineapple Express’’ happens when warm air and lots of moisture are transported from the Central Pacific, near Hawaii, to the Eastern Pacific Ocean. The above animation of satellite imagery from NOAA’s GOES-West satellite showed the stream of clouds associated with that moisture from Dec. 9 to Dec. 12, 2014 and brought rain and snow to the western U.S. Continue reading

Study says extreme weather doesn’t sway public opinion on global warming

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Extreme weather events don’t seem to affect people’s beliefs on global warming, new research shows.

Ideology trumps science

Staff Report

FRISCO — A string of extreme global weather events between 2010 and 2012 didn’t do much to change public opinion about global warming, according to a new study by Michigan State University researchers.

They started their research with polling data collected in March 2012, after by far the warmest U.S. winter in recent memory. But most people surveyed didn’t link the unusually warm weather with global warming. In fact, only 35 percent of U.S. citizens thought that global warming caused the warm winter, according to the paper published this week in Nature Climate Change. Continue reading

Environment: South Dakota Native Americans describe House vote on Keystone XL pipeline as an ‘act of war’

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War over the Keystone XL pipeline?

‘We are a sovereign nation and we are not being treated as such … We will close our reservation borders to Keystone XL’

By Summit Voice

FRISCO — Conservation groups and climate activists aren’t the only ones hopping mad about the Congressional rush to approve the Keystone XL pipeline. Native Americans in South Dakota say they consider last week’s House vote to approve the pipeline “an act of war.”

The proposed project, aimed at pumping tar sands crude oil from Canada to U.S. refineries, would completely cross South Dakota. Environmentalists oppose the pipeline because it represents continued reliance on fossil fuels. Most, if not all, of the oil would be exported to other countries, so the argument that it would somehow lower fuel prices rings hollow and false. Continue reading

Climate: 4th-warmest October on record for U.S.

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East-west split not as dramatic in autumn

Staff Report

FRISCO — October 2014 ended up as the fourth-warmest on record, at 3 degrees Fahrenheit above the long-term average, federal weather watchers said today in the monthly climate update from the National Climatic Data Center.

Autumn continued showing the persistent east-west split that is part of an ongoing drought pattern in the Far West. From Texas and Oklahoma to California, most states reported average October temperatures running near record levels, along with a slice of New England. Average temps reigned across the Midwest, with another belt of warmer-than-average readings in the Southeast. Continue reading

Study: Tornado season becoming more variable

A new NOAA study tracks the occurrence of seasonal tornadoes across the U.S.

A new NOAA study tracks the occurrence of seasonal tornadoes across the U.S.

Fewer outbreaks, but more twisters?

Staff Report

FRISCO — Tracking tornado trends is a big deal in the global warming era, as researchers seek to determine whether climate change will result in more catastrophic and life-threatening weather events.

Since the 1950s, researchers say, the overall number of annual tornadoes has remained steady, but a new analysis of data shows  there are fewer days with tornadoes each year, but on those days there are more tornadoes.

A consequence of this is that communities should expect an increased number of catastrophes, said lead author Harold Brooks, research meteorologist with the NOAA National Severe Storms Laboratory. Continue reading

Climate: Is drought relief in sight for California?

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The southern U.S., including parts of drought-hit Arizona, may see above-average precipitation this winter.

Climate experts say there’s good chance of average precipitation in California, but recovery will take a while

Staff Report

FRISCO — There may be some drought relief for California this winter, but the state won’t make up a huge moisture deficit in just one rainy season, federal climate scientists said this week, releasing their winter season outlook.

“Complete drought recovery in California this winter is highly unlikely,” said Mike Halpert, acting director of NOAA’s Climate Prediction Center.”While we’re predicting at least a 2 in 3 chance that winter precipitation will be near or above normal throughout the state, with such widespread, extreme deficits, recovery will be slow,” Halpert added. Continue reading

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