Acid deposition is an atmospheric process encompassing both wet and dry transfer of acidic components, primarily sulfuric and nitric acids formed from the oxidation of sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) emitted by anthropogenic and natural sources. In wet deposition, these acids are scavenged by cloud droplets, rain, snow, or fog, while dry deposition involves direct uptake of acidic gases and particles by surfaces. Acid deposition alters the pH and ionic composition of soils and surface waters, mobilizes toxic metals (e.g., aluminum), disrupts nutrient cycling, and damages vegetation, infrastructure, and aquatic ecosystems, making it a central topic in atmospheric chemistry and environmental impact assessment.
The field of solar geoengineering revolves around the idea of cooling the globe via the injection of aerosols to reflect sunlight or to thin clouds. One such strategy, stratospheric aerosol injection (SAI), aims to mimic ...
Earth Sciences
Mar 23, 2026
0
7
Chemicals brought in to help protect our ozone layer have had the unintended consequences of spreading vast quantities of a potentially toxic "forever chemical" around the globe, a new study shows. Atmospheric scientists, ...
Earth Sciences
Feb 4, 2026
0
85
A new study out of York University has found that the amount of atmospheric trifluoroacetic acid (TFA), the tiniest forever chemical, significantly declined in Toronto during COVID in 2020, which researchers say is good news ...
Environment
Jan 29, 2026
0
16
A study published by researchers at the University at Albany has presented the first documented evidence that Adirondack surface waters have made a near full recovery from metal pollution since the enactment of the Clean ...
Environment
Apr 25, 2025
0
277
