NOAA’s observations help inform U.S. greenhouse gas emissions reporting for hydrofluorocarbons 25 April 2022

NOAA’s observations help inform U.S. greenhouse gas emissions reporting for hydrofluorocarbons

For the first time, the U.S. Environmental Protection Agency (EPA) has included a comparison of NOAA’s atmospheric emission estimates of four hydrofluorocarbons (HFCs) to its own inventory-based estimates in the just-released U.S. Inventory of Greenhouse Gas Emissions and Sinks, based on results first reported in the 2017 Geophysical Research Letters study by a team of NOAA, CIRES, and EPA scientists.

Climate mitigation policies for cities must consider air quality impacts 14 April 2022

Climate mitigation policies for cities must consider air quality impacts

These urban mitigation policies aimed at reducing CO2 emissions can worsen air quality and cause premature deaths if coemitted pollutants are not accounted for.

Solid aerosols in Arctic atmosphere could impact cloud formation and climate 14 April 2022

Solid aerosols in Arctic atmosphere could impact cloud formation and climate

New research demonstrates the presence of solid organic-coated ammonium sulfate particles in the Arctic boundary layer. As the Arctic loses ice, researchers expect to see more of these unique particles formed from oceanic emissions combined with ammonia from birds, that can change how clouds form and climate.

New research provides insight into the abundance of natural and anthropogenic organic aerosols in the Arctic 25 March 2022

New research provides insight into the abundance of natural and anthropogenic organic aerosols in the Arctic

A new study funded by CPO’s AC4 program expands our understanding of the composition and sources of Arctic organic aerosols.

New research provides insight into the sources and sinks of an ozone-depleting trace gas 11 March 2022

New research provides insight into the sources and sinks of an ozone-depleting trace gas

The research, co-authored by GML scientists and funded in part by CPO’s AC4, narrows the gap between known sources and sinks of methyl bromide.

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Americans’ health, security and economic wellbeing are tied to climate and weather. Every day, we see communities grappling with environmental challenges due to unusual or extreme events related to climate and weather.