Posted on February 11, 2016 by Bob Berwyn
Impacts of greenhouse gas emissions will last for thousands of years.
‘It is high time that this essential irreversibility is placed into the focus of policy-makers’
Today’s debates about global warming impacts are much too shortsighted, according to a new analysis, which warns that, at the current rate of greenhouse gas emissions, the Earth is likely to suffer irreparable damage that could last tens of thousands of years.
“Much of the carbon we are putting in the air from burning fossil fuels will stay there for thousands of years – and some of it will be there for more than 100,000 years,” said Oregon State University paleoclimatologist Peter Clark. “People need to understand that the effects of climate change on the planet won’t go away, at least not for thousands of generations,” said Clark, lead author of the article. Continue reading
Filed under: climate and weather, climate change, Environment, global warming | Tagged: climate change, Environment, global warming, life on Earth, long term climate change impacts, sea level rise | 1 Comment »
Posted on February 10, 2016 by Bob Berwyn
‘A normal year in the Southwest is now drier than it once was’
A federal climate assessment projects soaring temperatures for the Southwest.
A subtle long-term shift in atmospheric patterns driven by global warming could lead to longer and more intense droughts in the southwestern U.S. and other semi-arid regions. Most climate models suggest that that a belt of higher average pressure that now sits closer to the equator will move north. This high-pressure belt is created as air that rises over the equator moves poleward and then descends back toward the surface.
That shift may already be affecting the climate of the Southwest, as moisture-bearing weather patterns have become more rare in the region, according to a new study. Previous research has suggested that the region’s forests and fish and birds are in big trouble. In Australia, researchers are nearly certain that global warming was a factor in a record-breaking 2013 heatwave. A federal climate assessment released in 2013 also identified similar concerns for the Southwest.
“A normal year in the Southwest is now drier than it once was,” said Andreas Prein, a postdoctoral researcher at the National Center for Atmospheric Research who led the study. “If you have a drought nowadays, it will be more severe because our base state is drier.” Continue reading
Filed under: climate and weather, climate change, Drought, Environment, extreme weather, global warming | Tagged: climate change, drought, global warming, Southwest | Leave a comment »
Posted on February 8, 2016 by Bob Berwyn
Last year, mild winter conditions eased foraging conditions for ungulates, but this year’s cold temps and deep snow could result in increase mortality. @bberwyn photo.
‘Wildlife has been experiencing and surviving severe weather for eons without human intervention’
Harsh winter conditions in northwestern Colorado may take a toll on already struggling mule deer herds, state biologists said last week, explaining that they’ve started a limited feeding program to try and keep ungulates from invading cattle grazing areas.
The recent storms have created conditions ranking among the most extreme in the past 35 years. Temperatures dropping well below zero and deep powder snow atop brittle crusts are making it harder for deer and elk to forage and could lead to increased wildlife mortality in portions of the region unless the weather moderates significantly, according to Colorado Parks and Wildlife. Continue reading
Filed under: climate and weather, Colorado, Environment, Snow and weather, wildlife | Tagged: Colorado, Colorado parks and wildlife, elk, Mule deer, mule deer feeding, wildlife, winter mortality | 1 Comment »
Posted on February 7, 2016 by Bob Berwyn
Antarctic sea ice also below average
Arctic sea ice extent is declining at a rate of about 3.2 percent per decade. @bberwyn photo.
Arctic sea ice extent in January was the lowest in the satellite record, according to the latest monthly update from the National Snow and Ice Data Center. Scientists said the new record monthly low was likely the result of unusually high air temperatures over the Arctic Ocean and a strong negative phase of the Arctic Oscillation for the first three weeks of the month.
Meanwhile in the Antarctic, this year’s extent was lower than average for January, in contrast to the record high extents in January 2015.
In the Arctic, the ice extent average 5.2 million square miles, 402,000 square miles below the 1981 to 2010 average and 35,000 square miles below the previous record January low that occurred in 2011.
Across most of the Arctic Ocean, air temperatures ran more than 13 degrees above average for most of January as a cyclical air pressure shift enabled warm air to flow northward toward the Arctic.
Over the long term, January sea ice extent is shrinking at a rate of about 3.2 percent per decade. Sea ice extent has been below 14.25 million square miles every year since 2005, according to the NSIDC.
But some projections suggest that winter sea ice extent could hold steady or even increase in the short term because of changes in a key Atlantic Ocean current that transports cold water northward. Observational data show a slight upward trend in Arctic sea ice extent from 2005 to 2015.
See the full NSIDC update here.
Filed under: Arctic, climate and weather, Environment, global warming | Tagged: Arctic sea ice, climate change, Environment, global warming | 1 Comment »
Posted on February 6, 2016 by Bob Berwyn
Public comment sought on draft EIS
Arapahoe Basin Ski Area is one step closer to gaining final approval for a 492-acre expansion that would include a new lift in the Beavers area. The ski area plan also calls for replacing Pallavicini chairlift, removing the Norway chairlift and adding a surface lift to ferry skiers and snowboarders to the popular backside Montezuma Bowl terrain.
Last week, the U.S. Forest Service released a draft environmental study for the planned projects. The agency will take public comments on the draft EIS through March 21. More information is online at: http://www.fs.usda.gov/project/?project=41664. A public meeting on the draft Eis will be held at The Keystone Center (1628 St John Rd., Dillon, CO 80435) on March 2, 2016 from 5:00 to 7:00 p.m.
In a cover letter released with the draft study, White River National Forest Supervisor said he is currently evaluating the recreational benefits of these projects against the identified resource impacts these project may create. Continue reading
Filed under: Arapahoe Basin, business, Colorado, Environment, public lands, Ski Resorts, skiing and riding, Summit County Colorado, Summit County news, White River National Forest | Tagged: A-Basin expansion, Arapahoe Basin ski area, Colorado skiing, skiing, Summit County skiing, The Beavers | 1 Comment »
Posted on February 5, 2016 by Bob Berwyn
Advocacy groups say the proposal leaves a few loopholes
Consumers in the U.S. may soon get some help in figuring out if their seafood comes from sustainable fisheries. A national group that’s been tackling illegal fishing this week announced a proposal for creating a U.S. seafood traceability — another step toward ensuring that global seafood resources are sustainably managed and not fraudulently marketed. The proposal aims to trace the origins of imported seafood by establishing reporting and filing procedures for imported fish and fish products entering U.S. commerce. Continue reading
Filed under: biodiversity, Environment | Tagged: fishing, illegal fishing, ocean conservation, sustainability | 2 Comments »
Posted on February 5, 2016 by Bob Berwyn
Entire state blanketed with snow in early Feburary
Mid-winter, and nearly all of Colorado has snow on the ground.
Snowpack is at or above average in all of Colorado’s river basins.
A pair of storms that bookended January helped raise the statewide snowpack level to 111 percent of average as of Feb. 1, according to the Natural Resources Conservation Survey.
Satellite images and other remote sensors operation by NOAA’s National Operational Hydrologic Remote Sensing Center storms left nearly the entire state blanketed in snow. Without those two storms, January snowfall would only have been about 70 percent of average for the month, said Brian Domonkos, Colorado Snow Survey supervisor with the NRCS.
Snowfall continued through February 3, which increased snowpack totals to as high as 117 percent of normal as of Feb 4. The mountains of Southern Colorado saw the greatest increase in snow-water equivalent. From January 28 to February 3. total snowpack depth increased as much as 30 inches at the Cumbres Trestle SNOTEL in the San Juan Mountain range.
As of February 1, the snowpack was below average in only a handful of minor watersheds. All other drainages were above to well above normal. While the late January storms benefitted the entire state, January precipitation as a whole was particularly slim in the Arkansas and Upper Rio Grande basins and storms only amounted to about 75 percent of normal monthly snowpack accumulation.
Filed under: climate and weather, Colorado, water | Tagged: climate, Colorado, Colorado snowpack, Colorado weather | 1 Comment »