Bay breeze influence on surface ozone at Edgewood, MD during July 2011

• DOI: 10.1007/s10874-012-9241-6
• Publication Date: 2012-11-15T14:31:40Z
• Authors: Ryan M. Stauffer; Anne M. Thompson; Douglas K. Martins; Richard D. Clark; Daniel L. Goldberg; Christopher P. Lo...; Ruben Delgado; Russell R. Dickerson; Jeffrey W. Stehr; Maria A. Tzortziou
• Keywords: Sea breeze; Cape

Surface ozone (O3) was analyzed to investigate the role of bay breeze on air quality at two locations in Edgewood, Maryland (lat: 39.4°, lon: −76.3°) for month July 2011. Measurements were taken as part first year NASA's "Deriving Information Conditions from Column and Vertically Resolved Observations Relevant Air Quality" (DISCOVER-AQ) Earth Venture campaign Geostationary Coastal Pollution Events Chesapeake Bay Oceanographic with DISCOVER-AQ (Geo-CAPE CBODAQ). Geo-CAPE CBODAQ complements by providing ship-based observations over Bay. A major goal is determining relative roles sources, photochemistry local meteorology during events Mid-Atlantic region U.S. characteristics, transport vertical structures O3 breezes identified using in-situ surface, balloon aircraft data, along remote sensing equipment. Localized late day peaks observed days, maximizing an average 3 h later compared days without breezes. Of 10 2011 that violated Environmental Protection Agency (EPA) 8 standard 75 parts per billion volume (ppbv) eight exhibited evidence a circulation. The results indicate while processes associated them are not necessary cause exceedances this area, exacerbate poor sustains into evening hours Edgewood. horizontal distributions coastal Edgewood area also show large gradients often determined boundary layer stability. Thus, developing models can sufficiently resolve these dynamics chemistry, more consistent monitoring complex coastline must be high priority.