Posted on February 8, 2016 by Bob Berwyn
Greenhouse gas emissions from aviation are a huge factor in the global climate change puzzle. @bberwyn photo.
Watchdogs say global carbon-trading system for airlines is needed to cap emissions
After years of foot-dragging, the aviation industry is close to adopting a CO2 emissions standard for aircraft, which will require aircraft builders to start producing more fuel efficient planes.
A group of technical experts with the International Civil Aviation Organization agreed on the proposed standard this week; the organization is expected to adopt the standard at an annual meeting this spring. The industry will also start to consider an overall cap on emissions at 2020 levels. The ICAO could take a vote on such a cap, as well as a carbon-trading program, later this year. Continue reading
Filed under: climate and weather, climate change, global warming | Tagged: airline CO2 emissions, airline emissions standard, aviation industry, civil aviation, climate change, global warming, greenhouse gases | Leave a comment »
Posted on January 26, 2016 by Bob Berwyn
Fossil fuel dinosaurs make last-ditch effort to keep polluting the nation’s air with dangerous greenhouse gases
Mercury from the Craig Station power plant in northwest Colorado pollutes lakes in Rocky Mountain National Park.
By Bob Berwyn
Texas, West Virginia, Colorado and 26 other states are going to the U.S. Supreme Court with a last-ditch effort to slow the Obama administration’s efforts to reduce greenhouse gas pollution.
The states want the court to block implementation of the EPA Clean Power Plan, which they describe as “the most far reaching and burdensome rule EPA has ever forced onto the States.”
Last week, the U.S. Court of Appeals for the D.C. Circuit rejected the same request, leading to the appeal to the Supreme Court. The states say the plan will require a massive shift away from fossil fuels to renewable sources of energy, and claim the changes will cost jobs and money. Continue reading
Filed under: air quality, climate and weather, climate change, Environment, global warming | Tagged: clean power plan, EPA, global warming, greenhouse gases, U.S. Supreme Court | Leave a comment »
Posted on January 25, 2016 by Bob Berwyn
‘Natural climate variations just can’t explain the observed recent global heat records, but man-made global warming can …’
Record-warm global temperatures are not due to natural variability.
It’s no accident that 13 out of the 15 warmest years on record have all occurred during the current century, according to climate researchers, who said there’s an “extreme likelihood” that the recent spate of warmth is caused by human-made climate change. Continue reading
Filed under: climate and weather, climate change, global warming | Tagged: climate change, global warming, greenhouse gases, Michael Mann, natural variability, Stefan Rahmstorf | 2 Comments »
Posted on January 15, 2016 by Bob Berwyn
The Dachstein Glacier in Austria has visibly and dramatically decreased in size in just a couple of decades. bberwyn photo.
Humans have triggered an era of ‘de-glaciation’
The build-up of heat-trapping greenhouse gases in the atmosphere could delay onset of Earth’s next ice age by 100,000 years, scientists estimate in a new study published this week in Nature.
The researchers reached their findings after “cracking the code of glacial inception,” according to a statement from the Potsdam Institute for Climate Impact Research, who said the relationship between incoming solar radiation and CO2 levels are the key factors that explain the last eight glacial cycles in Earth history. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: anthropocene, climate change, CO2, global warming, greenhouse gases, ice ages | Leave a comment »
Posted on December 16, 2015 by Bob Berwyn
Freshwater streams disturbed by human activity are significant sources of heat-trapping methane pollution. @bberwyn photo.
Protecting water quality has climate benefits
Climate models may be significantly underestimating the amount of greenhouse gases produced by fresh water streams, researchers said in a new study released this week.
Published in the journal Ecological Monographs, the findings suggest that human disturbances on watersheds are a key factor in raising concentrations of methane, a particularly potent heat-trapping pollutant. Based on the research, the world’s rivers and streams pump about 10 times more methane into our atmosphere than previously estimated. Continue reading
Filed under: climate and weather, Environment, global warming, rivers, water quality | Tagged: climate change, Environment, global warming, greenhouse gases, methane, water quality | 1 Comment »
Posted on December 6, 2015 by Bob Berwyn
A new USGS study projects a significant permafrost meltdown in Alaska by 2100.
Near-surface permafrost areas could shrink by 16-24 percent
Global warming is likely to take a big bite out of Alaska’s permafrost the next few decades, U.S. Geological Survey researchers said after analyzing new satellite data.
The maps suggest that the near-surface permafrost that presently underlies 38 percent of boreal and arctic Alaska would be reduced by 16 to 24 percent by the end of the 21st century under widely accepted climate scenarios. Permafrost declines are more likely in central Alaska than northern Alaska. Continue reading
Filed under: Arctic, climate and weather, Environment, global warming | Tagged: Alaska, Arctic, climate change, global warming, greenhouse gases, permafrost | Leave a comment »
Posted on December 5, 2015 by Bob Berwyn
Plan could unleash 36.6 billion tons of greenhouse gases
A federal judge ordered the U.S. Forest Service to disclose greenhouse gas emissions from a proposed coal mining project in Colorado.
The public will have a chance to weigh in on a U.S. Forest Service proposal to expand coal-mining on public lands in south-central Colorado at two public hearings, Dec. 7 in Paonia and Dec. 9 in Denver.
At issue is a Supplemental Draft Environmental Impact Statement for the Colorado Roadless Rule released November 20. The study addresses a recent court ruling that blocked the coal mining expansion in the North Fork Valley, near Paonia, pending more analysis and disclosure of greenhouse gas emissions associated extracting and burning the coal. Continue reading
Filed under: climate and weather, climate change, Colorado, energy, Environment, global warming, US Forest Service | Tagged: climate change, Colorado, Colorado roadless rule, energy, Fossil fuel, global warming, greenhouse gases, North Fork coal mining, public lands | Leave a comment »