Atmospheric planetary boundary layer (PBL), also called the atmospheric boundary layer, is the region of the lower troposphere where Earth's surface strongly influences temperature, moisture and wind through the turbulent ...
Earth Sciences
Jul 21, 2020
0
35
Could we create massive sulfuric acid clouds that limit global warming and help meet the 2015 Paris international climate goals, while reducing unintended impacts?
Earth Sciences
Jul 20, 2020
0
9
Power plants that burn coal and other fossil fuels emit not only planet-warming carbon dioxide, but also pollutants linked to breathing problems and premature death. Policies proposed to mitigate climate change, however, ...
Environment
Jun 10, 2020
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5
Nine states have sued the U.S. Environmental Protection Agency for curtailing enforcement of rules on air and water pollution during the COVID-19 pandemic, saying the pullback puts the public at even greater risk.
Environment
May 21, 2020
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6
Cities that declared a state of emergency in February due to outbreaks of COVID-19 saw air pollution decrease by up to 40% as businesses close their doors and residents stayed home, a University of Toronto researcher has ...
Environment
Apr 14, 2020
2
147
High loadings of fine particulate matter (PM2.5) during haze are mostly produced from the chemical reactions of reactive gas precursors, including sulfur dioxide (SO2), nitrogen oxides (NOx), ammonia (NH3), and volatile organic ...
Environment
Apr 13, 2020
0
8
As the only alkaline gas in the atmosphere, ammonia can react with sulfur dioxide and nitrogen oxides to form secondary fine particles, accelerating the generation of atmospheric haze. Ammonia is therefore considered as a ...
Environment
Apr 13, 2020
0
15
Some substances are known to exist in several different structurally disordered solid states, a phenomenon known as polyamorphism.
Materials Science
Apr 6, 2020
0
16
Scientists estimate that each year in the U.S., outdoor air pollution shortens the lives of about 100,000 people by one to two decades.
Environment
Feb 13, 2020
1
3
More than half of all air-quality-related early deaths in the United States are a result of emissions originating outside of the state in which those deaths occur, MIT researchers report in the journal Nature.
Environment
Feb 12, 2020
1
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