Posted on December 18, 2014 by Bob Berwyn
The Colorado River Delta in May, 2014. Photo courtesy NASA.
Science team tracks effects of historic pulse flow
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
Filed under: Colorado, Environment, rivers, water | Tagged: climate, Colorado River, Colorado River Delta, Colorado River pulse flow, water | 1 Comment »
Posted on December 13, 2014 by Bob Berwyn
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.
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
Filed under: climate and weather, Drought, El Niño, extreme weather | Tagged: California drought, climate, El Nino, extreme weather | 3 Comments »
Posted on November 24, 2014 by Bob Berwyn
Extreme weather events don’t seem to affect people’s beliefs on global warming, new research shows.
Ideology trumps science
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
Filed under: climate and weather, global warming | Tagged: climate, extreme weather, global warming, global warming beliefs | Leave a comment »
Posted on November 15, 2014 by Bob Berwyn
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
Filed under: climate and weather, energy, Environment, global warming | Tagged: climate, energy, Environment, global warming, Keystone XL pipeline, Native Americans, Rosebud Sioux, South Dakota | 34 Comments »
Posted on November 13, 2014 by Bob Berwyn
East-west split not as dramatic in autumn
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
Filed under: climate and weather | Tagged: climate, climate change, global warming, October 2014 temperatures, U.S. temperature records | Leave a comment »
Posted on October 28, 2014 by Bob Berwyn
A new NOAA study tracks the occurrence of seasonal tornadoes across the U.S.
Fewer outbreaks, but more twisters?
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
Filed under: climate and weather, extreme weather | Tagged: climate, extreme weather, NOAA, tornado numbers, tornado trends, tornadoes | 1 Comment »
Posted on October 16, 2014 by Bob Berwyn
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
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
Filed under: agriculture, climate and weather, Drought, El Niño | Tagged: California drought, climate, El Nino, winter weather outlook | Leave a comment »