Posted on November 17, 2015 by Bob Berwyn
New data shows climate may be more sensitive to CO2 than previously thought.
New chemical analysis sends climate warming signal
A study of ancient carbonate crystals in Colorado suggests that the Earth’s climate is more sensitive to changes in atmospheric carbon dioxide than believed.
Based on the chemical analysis of rocks from the Green River formation, scientists think that a doubling of CO2 from pre-industrial times could raise the global temperature by a whopping 3 degrees Celsius. Continue reading
Filed under: climate and weather, Environment, global warming | Tagged: climate, CO2, CO2 emissions, Environment, global warming, greenhouse gases | 1 Comment »
Posted on October 17, 2015 by Bob Berwyn
Early October peak was lowest extent since 2008
This year’s maximum Antarctic sea ice extent may have been affected by El Niño. @bberwyn photo.
This year’s El Niño may have been a factor limiting Antarctic sea ice, which peaked on October 6 at the lowest extent since 2008, according to an update from the National Snow and Ice Data Center.
The seasonal maximum extent rached about 7.27 million square miles, falling roughly in the middle of the record of Antarctic maximum extents compiled during the satellite record — in contrast to the past three years, which all set records. Continue reading
Filed under: Antarctica, climate and weather, climate change, Environment | Tagged: antarctic sea ice, Antarctica, climate, climate change, El Nino | 1 Comment »
Posted on October 11, 2015 by Bob Berwyn
Nine states report record warmth
Nine states were record-warm in September.
September 2015 delivered above average temperatures across most of the contiguous 48 states, with nine states — including Colorado — reporting record warmth for the month, according to the latest State of the Climate update from NOAA’s National Climatic Data Center.
After tallying up the numbers, the federal climate experts said it was the second-warmest September on record, lagging behind only 1998. The average temperature across the lower 48 states was 68.5 degrees Fahrenheit, which 3.7 degrees above the 20th century average. Continue reading
Filed under: climate and weather, global warming | Tagged: climate, global warming, September 2015 temperature records | 2 Comments »
Posted on October 8, 2015 by Bob Berwyn
Industrial facilities like cement plants must be considered in global plans to reduce greenhouse gas emissions. Photo courtesy Gavin Houtheusen/Department for International Development, via Wikipdia and the Creative Commons.
Carbon capture and storage may be a critical part of the equation
While energy production is the main focus of greenhouse reduction efforts, heavy industry also needs to be considered, according to new research showing that mitigation strategies are needed to address CO2 emissions from heavy industry, including oil refining and the production of cement and steel.
Meeting climate targets requires an urgent effort to “demonstrate and implement carbon capture and storage, CCS, and other carbon dioxide mitigation technologies,” according to Chalmers University of Technology researcher Johan Rootzén. “While this will involve major investments in primary production, our results suggest that there will only be marginal impacts on costs and prices in the end-use sectors.” Continue reading
Filed under: climate change, global warming | Tagged: carbon capture and storage, CCS, change, climate, greenhouse gases, industrial greenhouse gas emissions | Leave a comment »
Posted on September 25, 2015 by Bob Berwyn
Plumes of smoke and flames rise from an eruption at Bárðarbunga volcano, Iceland, in 2014. The amount of sulphur dioxide emitted in the six-month eruption was treble that given off by all of Europe’s industry. Credit Dr. John Stevenson
12,000 tons of sulphur dioxide per day …
Researchers in the UK have helped show how volcanoes can affect air quality by quantifying emissions from last year’s eruption of Iceland’s Bárðarbunga volcano.
“The eruption discharged lava at a rate of more than 200 cubic metres per second, which is equivalent to filling five Olympic-sized swimming pools in a minute,” said Dr Anja Schmidt from the School of Earth and Environment at the University of Leeds, who led the study. Continue reading
Filed under: Environment | Tagged: air quality, Bárðarbunga, climate, Iceland, pollution, sulphur dioxide, volcanoes | Leave a comment »
Posted on September 11, 2015 by Bob Berwyn
It’s all connected …
FRISCO — The connection between the world’s oceans and atmosphere have become even more clear thanks to a new study showing for the first time that plankton in remote regions contribute to airborne particles that trigger ice formation in clouds.
Organic waste from life in the oceans, which is ejected into the atmosphere along with sea spray from breaking waves, stimulates cloud droplets to freeze into ice particles. This affects how clouds behave. The scientists, who published their findings in the journal Nature, say the research could help refine climate change projections. Continue reading
Filed under: climate and weather, Environment | Tagged: climate, oceans, Plankton | 1 Comment »