Both the El Niño Southern Oscillation and natural variations in tropical Pacific weather conditions impact surface air quality in the Eastern United States.
Pollution: urban and regional
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Novel Air Pollution Study Gauges Individual Cyclists’ Risks
By attaching an array of instruments to bike commuters in New York City, researchers aim to evaluate ambient pollution amounts and doses at the level of an individual cyclist.
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The Asian Summer Monsoon Launches Pollutants Around the Globe
New research provides a comprehensive overview of the effect of the Asian summer monsoon (ASM) on atmospheric composition throughout the life cycle of the ASM anticyclone.
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Birds Flock to Areas of Good Weather Across the United States
A survey of birds over several decades shows that many bird species migrate or shrink their habitat to avoid drought and storms.
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EPA Head Calls Climate Change Biggest Threat to U.S. Progress
McCarthy says that despite anxiety at the agency about the election results, she is confident in EPA’s work and that efforts to control climate change will continue.
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No Evidence for Unknown Source of Ozone Precursor
A study suggests that known combustion and photochemical sources of nitrous acid, a precursor to ground-level ozone, are enough to explain levels seen in the atmosphere.
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Atmospheric Chemists Should Tackle Risks to Society, Report Says
Protecting public health and the health of the climate and ecosystems warrants more focus from this scientific field, according to the report.
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Chemical Boosts Ozone Production over Southern China
The presence of nitryl chloride in polluted urban air can enhance the production of ozone by up to 41%, according to a new modeling study constrained by ground-based measurements.
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Evaluating the Impact of Maryland's Healthy Air Act
Reducing emissions of short-lived gaseous sulfur pollutants from power plants had an immediate, local benefit, but controlling longer-lasting harmful particulate matter will require regional action.
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Court Delay on U.S. Climate Plan Won't Stop Clean Energy Efforts
While many states wait for judicial clarity, analysts predict that the move toward clean energy and emissions reductions will continue.