A5038133449- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Air Quality and Health Impacts
- Atmospheric aerosols and clouds
- COVID-19 impact on air quality
- Climate Change and Health Impacts
- Meteorological Phenomena and Simulations
- Environmental Justice and Health Disparities
- Water Quality and Resources Studies
- Marine and coastal ecosystems
- Maritime Transport Emissions and Efficiency
Canadian wildfire smoke impacted air quality across the northern Mid-Atlantic (MA) of United States during June 9-12, 2015. A multiday exceedance new 2015 70-ppb National Ambient Air Quality Standard (NAAQS) for ozone (O3) followed, resulting in Maryland being incompliant with Environmental Protection Agency's (EPA) revised O3 NAAQS. Surface situ, balloon-borne, and remote sensing observations monitored impact at monitoring sites. At peak concentrations Maryland, wildfire-attributable...
In coastal environments like the Chesapeake Bay, presence of sea/bay breeze circulation can contribute to poor air quality and makes modeling meteorological chemical impacts in forecast models a challenge. The Ozone Water-Land Environmental Transition Study 2 field campaign aimed better quantify mechanisms affecting surface, profile, columnar trace gas amounts between land water. Using HYSPLIT back trajectory modeling, variability Pandora NO2 surface O3 was quantified. Clustered trajectories...
Abstract Ozone from a stratospheric intrusion (SI) reached sea level in association with thunderstorm gust front during the predawn hours of 16 April 2018. The event caused surface ozone concentration increases 30 to more than 50 ppbv matter minutes band approximately Richmond, Virginia, Philadelphia, Pennsylvania. Peak hourly concentrations 74 northeastern Maryland despite absent photochemistry and ongoing convective activity. An intense jet stream velocities >80 kt (41 m s −1 ) less 1...
Enhanced ozone concentrations at land-water interfaces create National Ambient Air Quality Standard (NAAQS) compliance issues across the United States. The northern Chesapeake Bay experiences higher sites adjacent to Bay, creating concerns for state of Maryland. Accordingly, Maryland Department Environment sited an monitor Hart-Miller Island (HMI) within (NCB) and gathered a continuous meteorological record over 278 days 2016 2017 seasons. representative water site was highest in 28% all 75%...
The Ozone Water-Land Environmental Transition Study, 2018 (OWLETS-2) measured total non-methane hydrocarbons (TNMHC) and EPA PAMS Volatile Organic Compounds (VOCs) on an island site in the northern Chesapeake Bay 2.1 3.4 times greater concentration, respectively, than simultaneous measurements at a land just 13 km away across land-water interface. Many VOCs had larger concentrations despite lower NEI emissions over water, but most of difference comprised species generally consistent with...
The City of Baltimore, MD has a history problems with environmental justice (EJ), air pollution, and the urban heat island (UHI) effect. Current chemical transport models lack resolution to simulate concentrations on scale needed, about 100 m, identify neighborhoods anomalously high pollution levels. In this paper we introduce capabilities mobile laboratory an initial survey several pollutants in Baltimore which communities are exposed disproportionate species. High black carbon (BC) stood...