"Measurements and models of GHGs and short-lived pollutants in the Baltimore/Washington area: Emissions and environmental justice"

<p>Abstract: Greenhouse gases and associated pollutants (CO, NOx, VOCs, aerosols) are measured from a small airplane, mobile laboratory, and towers.&#160; Through mass balance calculations and comparison to numerical models such as CMAQ-GHG&#160; we estimate the total flux from the cities of Baltimore, MD and Washington, DC.&#160; Emissions inventories were found to underestimate methane emissions substantially and have been improved.&#160; Major sources include leakage in the natural gas delivery system and biogenic processes including landfills.&#160; Measurements with high spatial and temporal resolution reveal hot spots of high concentrations often associated with pollutants such as black carbon (BC) and NO₂ that pose a health hazard in disadvantaged communities.&#160;</p>