Ozone formation and transport in southeastern United States: Overview of the SOS Nashville/Middle Tennessee Ozone Study

摘要: The Southern Oxidants Study (SOS) is a public-private partnership collectively engaged, since 1989, in coordinated program of policy-relevant research to improve scientific and public understanding tropospheric ozone pollution. In the summers 1994 1995, SOS implemented Nashville/Middle Tennessee Ozone Study. This effort, second urban intensive study, conducted series integrated, process-oriented airborne surface measurement experiments better understand chemistry meteorology associated with production, transport, impact ozone. Specific technical objectives addressed (1) role biogenic VOC NOx emissions on local regional (2) effect urban-rural exchange/interchange (3) sub-grid-scale photochemical meteorological processes, (4) provision high-quality chemical data set test observation- emission-based air quality forecast models. Some more significant findings 1994–1995 studies include following: production Nashville was found be close transition between NOx-sensitive VOC-sensitive chemistry. efficiency (OPE) power plant plumes, molecules formed per molecule emitted, inversely proportion emission rate, plants having greatest exhibiting lowest OPE. During stagnant conditions, nighttime winds dominated pollutant transport represent major mechanism for transporting pollutants rural areas. Ultimately, results provided by this will allow improved assessment existing management strategies provide tools development future strategies.