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This is an archive of AGU's GeoSpace blog through 1 July 2020. New content about AGU research can be found on Eos and the AGU newsroom.

You are browsing the archive for Journal of Geophysical Research: Atmospheres Archives - Page 4 of 4 - GeoSpace.

30 August 2016

Wildfire smoke hacks clouds

Plumes of wildfire smoke envelop and alter clouds, potentially affecting local weather, according to new research based on serendipitous airborne measurements of clouds in smoke from Canadian fires. The new data confirms clouds embedded in smoke are likely to warm up the atmosphere around clouds, causing the clouds to dissipate faster.

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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.

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11 May 2016

North Dakota’s Bakken oil and gas field leaking 275,000 tons of methane per year

Researchers found that 275,000 tons of methane leak from the Bakken oil and gas field each year, similar to the emission rate found for another oil-producing region, Colorado’s Denver-Julesburg Basin. That’s the finding of the first field study measuring emissions of this potent greenhouse gas from the Bakken, which spans parts of North Dakota and Montana.

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14 September 2015

Breaking down India’s monsoon

Studying El Niño and La Niña’s effects in regions, sub-seasons, may improve rainfall forecasts.

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29 June 2015

Beijing quadrupled in size in a decade, new study finds

A new study shows that Beijing quadrupled in physical extent between 2000 and 2009. The new buildings alone — not including the impacts of additional city dwellers and their cars — increased heat and changed wind and pollution patterns in a ring around Beijing.

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8 January 2015

Epic survey finds regional patterns of soot and dirt on North American snow

University of Washington scientists recently published the first large-scale survey of impurities in North American snow to see whether they might absorb enough sunlight to speed melt rates and influence climate.

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23 July 2014

Nature’s roadblock to hurricane prediction

The quiet Atlantic hurricane season of 2013 came as a surprise to many, as seasonal forecasts had consistently predicted an unusually large crop of named storms. A new study published in the Journal of Geophysical Research: Atmospheres, a journal of the American Geophysical Union, finds that internal variability—processes that unfold without being dictated by larger-scale features—can make one season twice as active as another, even when El Niño and other large-scale hurricane-shaping elements are unchanged. The results suggest that seasonal hurricane forecasts could be improved by conveying the amount of unavoidable uncertainty in the outlook.

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30 June 2014

Cold War era samples reveal sharp drop in major global warming agent in part of Arctic

Scientists measuring soot on thousands of air filters from the Finnish Arctic found a 78 percent decrease in the particulates — the second largest man-made contributor to global warming — from 1971 to 2010, according to a new study.

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8 May 2014

Airborne measurements confirm leaks from oil and gas operations

During two days of intensive airborne measurements, oil and gas operations in Colorado’s Front Range leaked nearly three times as much methane, a greenhouse gas, as predicted based on inventory estimates, and seven times as much benzene, a regulated air toxic. Emissions of other chemicals that contribute to summertime ozone pollution were about twice as high as estimates, according to the new paper, accepted for publication in the American Geophysical Union’s Journal of Geophysical Research: Atmospheres.

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