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atmospheric chemistry

This tag is associated with 3 posts
Figure 1: Cows are not the only source of methane! (Source: Jean-Luc Bailleul (own work), via Wikicommons)

More than cow burps: the many sources of methane

Methane is an important, and often forgotten, greenhouse gas. It comes from a variety of sources including wetlands, rice paddies, and natural gas operations. This article explores methane’s role in our changing climate and investigates some natural and anthropogenic sources.

Figure1.Calculated surface water pH changes arising from shipping-derived inputs of SOx and NOx. Calculations begin with the month of January.

Emissions from International Shipping Vessels Contribute to Ocean Acidification

Ship emissions of sulfur and nitrogen oxides (SOx, NOx) can be deposited and form sulfuric and nitric acid in surface water. Do heavily-trafficked trade routes result in “hotspots” of ocean acidification? Hassellöv and her team show “hotspots” that coincide with areas of heavy shipping traffic and seasonal stratification.

Deposition of dioxin from terrestrial emissions into the world's oceans over one year of atmospheric transport

Model Suggests 40% of Global Dioxin Emissions End Up in Oceans

Researchers at the University of British Columbia recently presented a global model simulating how dioxins, a group of very toxic, persistent pollutants, travel from source regions and are deposited around the globe. Their findings suggest that oceans are impacted more dramatically than previously thought.

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