Posted on November 20, 2014 by Bob Berwyn
Carbon neutral by 2050?
Can the globe be carbon-neutral by 2050?
FRISCO — Limiting global warming to two degrees Celsius will require reaching carbon neutrality by mid-century, UN officials said this week as they released a new emissions gap report that clearly outlines the global carbon budget.
“Don’t believe it if you hear politicians saying it can’t be done. It can,” said Achim Steiner, director of the UN Environmental Program. Steiner and other top officials said increased energy efficiency and smart growth are the keys to reaching global climate targets.
“If this was prohibitively costly we’d have to make some calculations, but it’s not,” Steiner said, explaining that switching to a low carbon economy offers opportunity for expanded economic development and a path toward minimizing future climate change impacts. Continue reading
Filed under: climate and weather, global warming | Tagged: carbon neutral, climate change, global warming, UNEP emissions gap report | 1 Comment »
Posted on November 19, 2014 by Bob Berwyn
Most of the world’s ice rivers are shrinking into oblivion
The Dachstein Glacier in Austria has visibly and dramatically decreased in size in just a couple of decades. bberwyn photo.
By Summit Voice
FRISCO — For mountain dwellers around the world, shrinking glaciers are one of the most vivid symptoms of Earth’s rising fever. Those gleaming mantles of ice have already disappeared from iconic landscapes like Glacier National Park.
Globally, millions of people rely on glacier-regulated stream flows for water supplies, so communities need to prepare for disruptions in the hydrological cycle because it’s becoming increasingly apparent that the meltdown is not going to stop. Continue reading
Filed under: climate and weather, global warming | Tagged: CIRES, glaciers, global warming, National Snow and Ice Data Center | Leave a comment »
Posted on November 19, 2014 by Bob Berwyn
New research may help explain the overall effect of volcanoes on global climate. Photo courtesy USGS.
New research tracks aerosols from volcanic eruptions
FRISCO — Sunlight-reflecting particles from relatively small volcanic eruptions may add up to have a significant effect on global temperatures, according to a new climate study that tries to quantify the cumulative impact of aerosols from volcanoes.
According to the research, based on a combination of measurements taken on the ground, in the air and from satellites, small volcanic eruptions that occurred between 2000 and 2013 deflected almost double the amount of solar radiation previously estimated.
That’s enough to lower global temperatures by about 0.05 to 0.12 degrees Celsius, the scientists concluded in their study, which appears in Geophysical Research Letters. Continue reading
Filed under: climate and weather, global warming | Tagged: aerosols, climate change, global warming, volcanoes | Leave a comment »
Posted on November 18, 2014 by Bob Berwyn
New NASA visual helps trace path of greenhouse gases
FRISCO — In a way, addressing global warming is like fighting a ghost. How do you tackle odorless and colorless heat-trapping gases like carbon dioxide and methane?
NASA, the government agency that literally has the best global perspective on climate change, has just released a new computer generated animation that help show the source of greenhouse gases and how they disperse around the planet. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: carbon dioxide animation, global warming, greenhouse gases, NASA | 2 Comments »
Posted on November 17, 2014 by Bob Berwyn
A polar bear in the Arctic. PHOTO COURTESY USGS/SUSANNE MILLER.
Is dwindling sea ice a factor?
FRISCO — Polar bear populations in the southern Beaufort Sea dropped 40 percent between 2000 and 2010, biologists say in a new study. The research suggests that survival of adult bears and cubs was especially low from 2004 to 2006, when most of the decline occurred.
“Of the 80 cubs observed in Alaska from 2004 to 2007, only 2 are known to have survived,” said Jeff Bromaghin, a U.S. Geological Survey research statistician and lead author of the study. Continue reading
Filed under: Arctic, biodiversity, climate and weather, endangered species, Environment | Tagged: biodiversity, climate change, Environment, global warming, polar bears | Leave a comment »
Posted on November 16, 2014 by Bob Berwyn
New books include misleading passages about climate science
Warmer than average temps prevailed around most of the globe in October 2014, according to NASA’s evaluation of the latest satellite data.
FRISCO —New textbooks under consideration for Texas schools may mislead students when it comes to climate science, the American Meteorological Society said in a Nov. 3 letter to the state’s board of education. The group says that several social studies textbooks being considered for classroom use include factual errors. Continue reading
Filed under: climate and weather, global warming | Tagged: climate science, education, global warming, Texas, textbooks | 4 Comments »
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 »