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16 November 2016
Global warming could reduce volcanic cooling effects on climate
New research finds that as the climate warms, Earth’s atmosphere could trap more volcanic and plumes in the troposphere, the lower part of the atmosphere where weather happens. Volcanic aerosols that stay in the troposphere get washed out by precipitation in days or weeks.
2 November 2016
Vehicle emission control strategies differ in U.S. and Europe
The United States and the European Union take markedly different approaches to vehicle emissions controls, and the evidence is in the air, according to a new study. The work shows distinct differences in vehicle pollution trends in U.S. megacities, where regulations tend to target air quality, and European ones, where the target tends to be greenhouse gases.
13 October 2016
Fires fueled by grass, crops can produce dangerous air pollutants
Grass and crop fires can emit more of certain types of hazardous fumes than wood fires, a new study finds. Results from the study could help scientists better understand the dangers from fire emissions, allowing firefighters or individuals close to a fire to react more appropriately, according to the study’s authors.
19 September 2016
New study “reels in” data on Utah’s winter ozone problem
A deep sea fishing rod is probably not the first tool that comes to mind when thinking about how to study air pollution in a remote inland desert, but it’s the heart of a new system that has given scientists a minute-by-minute look at how quickly the sun can convert oil and gas emissions to harmful ground-level ozone.
8 August 2016
Study quantifies impact of oil and gas emissions on Denver’s ozone problem
The first peer-reviewed study to directly quantify how emissions from oil and gas activities influence summertime ozone pollution in the Colorado Front Range confirms that chemical vapors from oil and gas activities are a significant contributor to the region’s chronic ozone problem.
25 July 2016
Study identifies link between cold temperatures in New York, destructive storms in Spain
In a recently published study, researchers show there’s a common atmospheric circulation pattern linking extreme weather on the two sides of the Atlantic Ocean.
26 May 2016
New study suggests less snow, earlier snowmelt at higher elevations in warming climate
Spring snowpack, relied on by ski resorts and water managers throughout the Western United States, may be more vulnerable to a warming climate in coming decades, according to a new study.
26 April 2016
Idling diesel engines may produce dangerous pollutant
New research finds exhaust from idling diesel engines produces a significant amount of isocyanic acid when photons from sunlight help it react with other compounds in the atmosphere. The amount of this secondary photochemical isocyanic acid produced by non-road, idling diesel engines, like those in tractors, loaders, and other heavy construction and farm equipment, was 50 to 230 milligrams per kilogram of diesel burned.
23 February 2016
Dubai construction alters local climate
The climate of Dubai is quickly growing less hospitable, according to authors of a new study.
6 October 2015
Ozone destroyer drops mysteriously
By Larry O’Hanlon Something strange has happened to the atmospheric concentration of a newly discovered, human-made, ozone-destroying gas: it has suddenly dropped and nobody knows why. The gas, HCFC-133a, is a type of hydrochlorofluorocarbon, ozone-destroying compounds used in some industrial processes, including the manufacturing of refrigerants. The use of HCFCs, which are also powerful greenhouse gases, is restricted under the Montreal Protocol. A study last year first identified HCFC-133a as …
GeoSpace is a blog on Earth and space science, managed by AGU’s Public Information staff. The blog features posts by AGU writers and guest contributors on all sorts of relevant science topics, but with a focus on new research and geo and space sciences-related stories that are currently in the news.