A new study looks into how air movement in the atmospheric boundary layer affects ozone removal by deciduous forests, which are a significant ozone sink.
Troposphere: composition and chemistry
Posted inNews
Did Ozone Loss Cause the End Devonian Mass Extinction?
Ozone loss, perhaps as a consequence of a warming climate, may have been responsible for a catastrophic loss of biodiversity.
Posted inNews
Golden State Blazes Contributed to Atmospheric Carbon Dioxide
A new case study investigates causes and effects of California’s 2017 wildfire season.
Posted inResearch Spotlights
A New Look at Winter Air Quality in the Northeastern U.S.
Past studies underestimated a major pollution source, particularly in rural areas.
Posted inEditors' Highlights
The Long Reach of El Niño’s Broom
Both the El Niño Southern Oscillation and natural variations in tropical Pacific weather conditions impact surface air quality in the Eastern United States.
Posted inScience Updates
Meteorologists Track Wildfires Using Satellite Smoke Images
Enhancements to the National Oceanic and Atmospheric Administration's decision support system give forecasters new capabilities for tracking smoke from fires using satellite data.
Posted inResearch Spotlights
Isotopes Track Carbon Cycle in Northern Wisconsin Wilderness
Researchers collected carbon from 3 years' worth of air samples and traced it back to its source.
Posted inResearch Spotlights
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.
Posted inResearch Spotlights
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.
Posted inResearch Spotlights
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.