Posted on February 23, 2015 by Bob Berwyn
Study tracks increased thunderstorm formation over Atlanta
A classic anvil-headed cumulunimbus cloud drops showers just east of the Continental Divide near Grays and Torreys Peak in Colorado.
FRISCO — Along with steadily raising global temperatures in the long-term, human-caused changes in land cover can affect day-to-day weather, including the formation of thunderstorms.
Specifically, urban areas appear to help trigger the formation of thunderstorms, possibly due to an increased concentration of aerosols, according to new research published in the Quarterly Journal of the Royal Meteorological Society. Continue reading
Filed under: climate and weather | Tagged: aerosols, climate, thunderstorms, urbanization, weather | 1 Comment »
Posted on February 16, 2015 by Bob Berwyn
Adaptive grazing could have environmental benefits, researchers say. bberwyn photo.
Short-rotation pastures with long recovery time for fields may yield environmental benefits
FRISCO — While healthy forests are known to be important carbon sinks in the global atmospheric cycle, there’s also a role for robust soils, according to a study team that’s exploring whether new grazing management techniques could have long-term environmental benefits.
The Arizona State University-SoilCarbon Nation team is looking at adaptive multi-paddock grazing, rotating stock through small pastures for short periods of grazing and longer recovery periods for soil and vegetation. The method mimics the migrations of wild herd animals, such as elk, bison and deer, and could help create robust soils, watersheds and wildlife habitat while sequestering atmospheric carbon dioxide. Continue reading
Filed under: agriculture, climate and weather, Environment | Tagged: carbon cycle, climate, Environment, grazing, soils management | Leave a comment »
Posted on February 6, 2015 by Bob Berwyn
Warm across the West. Graphic courtesy NOAA.
Warm temperatures records outpace cold readings by seven to one
FRISCO — Despite plenty of media hype about snowstorms in the Northeast, January 2015 picked up where December 2014 left off — with above average temperatures across most of the U.S.
In its monthly state of the climate report, the National Climatic Data Center reported that record high temperatures outnumbered record-low readings by about seven-to-one for the month. Preliminary data show there were 3,499 warm daily temperature records broken or tied (1,906 warm maximum and 1,593 warm minimum), compared to 775 cool daily temperature records broken or tied (441 cool maximum and 334 cool minimum). Continue reading
Filed under: climate and weather, global warming | Tagged: climate, climate change, global warming, January 2015 temperature records | 1 Comment »
Posted on February 4, 2015 by Bob Berwyn
Oil price drop should be bigger factor in evaluations
By Bob Berwyn
FRISCO — In case there was ever any doubt (and there wasn’t), the EPA this week made it clear that construction of the Keystone XL Pipeline would result in a significant increase in greenhouse gas emissions.
The agency’s formal comment letter to the State Department focused on shifting market conditions, including the recent dip in oil prices, pointed out that the overall analysis for the pipeline failure to explore alternative routes that would not put critical land and water resources at risk. Continue reading
Filed under: energy, Environment | Tagged: climate, EPA, global warming, greenhouse gases, Keystone XL pipeline | 2 Comments »
Posted on February 3, 2015 by Bob Berwyn
A tornado near Lakeview, Texas. Photo courtesy NOAA.
New study could help produce better tornado forecasting
FRISCO — Under certain conditions, wildfire smoke transported thousands of miles can intensify tornadoes in U.S., according to University of Iowa researchers, who studied how smoke from agricultural burning in Central America affected tornado conditions in the United States.
The research specifically looked at the smoke impacts on an April 27, 2011 tornado outbreak that spawned 122 twisters, killing 313 people, considered the most severe tornado event since 1950. Continue reading
Filed under: climate and weather, extreme weather | Tagged: 2011 tornado outbreak, climate, extreme weather, tornadoes, wildfire smoke | Leave a comment »
Posted on January 19, 2015 by Bob Berwyn
New study will deepen understanding of plankton’s role in global carbon cycle
How does ocean phytoplankton respond to global warming?
FRISCO — It’s well-known that ocean phytoplankton are a key link in the global carbon cycle, and a new study this year will help expand that understanding.
A researcher with Oregon State University will lead a $30 million NASA-funded study to look at a phytoplankton hot spot stretching from Woods Hole, Massachusetts to the Azores and north to Greenland’s southern tip.
The research could challenge conventional wisdom about when and why phytoplankton bloom and help show how global warming will change the oceans. Continue reading
Filed under: biodiversity, climate and weather, Environment, Marine biology, ocean conservation | Tagged: carbon cycle, climate, oceans, phytoplankton | Leave a comment »
Posted on January 10, 2015 by Bob Berwyn
Pure white? Not always.
FRISCO— From a distance, a freshly fallen blanket of snow looks pure white, but there’s more than meets the eye. Mixed in with the reflective flakes are tiny, dark particles of pollution. University of Washington scientists recently studied that pollution to see if they could find regional or seasonal patterns that might affect melting and the overall climate.
The study shows that North American snow away from cities is similar to Arctic snow in many places, with more pollution in the U.S. Great Plains. The findings also also show that agricultural practices, not just smokestacks and tailpipes, may have a big impact on snow purity. Continue reading
Filed under: climate and weather, Snow and weather | Tagged: Black carbon, climate, Environment, pollution, snow, soot | Leave a comment »