Secondary organic aerosol (SOA) is formed from the atmospheric oxidation of gas-phase
organic compounds leading to the formation of particle mass. Gasoline-and diesel-powered …

Multiple linkages connect air quality and climate change. Many air pollutant sources also
emit carbon dioxide (CO2), the dominant anthropogenic greenhouse gas (GHG). The two …

A gap in emission inventories of urban volatile organic compound (VOC) sources, which
contribute to regional ozone and aerosol burdens, has increased as transportation …

Natural gas (NG) is a potential “bridge fuel” during transition to a decarbonized energy
system: It emits less carbon dioxide during combustion than other fossil fuels and can be …

Methane is a greenhouse gas emitted by a range of natural and anthropogenic sources.
Atmospheric methane has been measured continuously from space since 2003, and new …

Published estimates of methane emissions from atmospheric data (top-down approaches)
exceed those from source-based inventories (bottom-up approaches), leading to conflicting …

Fugitive methane (CH 4) emissions from landfills are significant global sources of
greenhouse gases emitted into the atmosphere; thus, reducing them would be a beneficial …

Methane emissions from natural gas delivery and end use must be quantified to evaluate the
environmental impacts of natural gas and to develop and assess the efficacy of emission …

Single-point failures of natural gas infrastructure can hamper methane emission control
strategies designed to mitigate climate change. The 23 October 2015 blowout of a well …

Casing and cement impairment in oil and gas wells can lead to methane migration into the
atmosphere and/or into underground sources of drinking water. An analysis of 75,505 …