Intercontinental Chemical Transport Experiment Ozonesonde Network Study (IONS) 2004: 2. Tropospheric ozone budgets and variability over northeastern North America

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Read Full Article (file size: 2097081 bytes) Cited by JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, D12S13, doi:10.1029/2006JD007670, 2007 Intercontinental Chemical Transport Experiment Ozonesonde Network Study (IONS) 2004: 2. Tropospheric ozone budgets and variability over northeastern North America Anne M. Thompson Meteorology Department, Pennsylvania State University, University Park, Pennsylvania, USA Jesse B. Stone Meteorology Department, Pennsylvania State University, University Park, Pennsylvania, USA Jacquelyn C. Witte Science Systems and Applications, Inc., Lanham, Maryland, USA NASA Goddard Space Flight Center, Greenbelt, Maryland, USA Sonya K. Miller Meteorology Department, Pennsylvania State University, University Park, Pennsylvania, USA Samuel J. Oltmans Earth Systems Research Laboratory, NOAA, Boulder, Colorado, USA Tom L. Kucsera NASA Goddard Space Flight Center, Greenbelt, Maryland, USA Kelly L. Ross Meteorology Department, Pennsylvania State University, University Park, Pennsylvania, USA Kenneth E. Pickering NASA Goddard Space Flight Center, Greenbelt, Maryland, USA John T. Merrill Graduate School of Oceanography, University of Rhode Island, Narragansett, Rhode Island, USA Gerry Forbes Environment Canada Sable Island, Dartmouth, Nova Scotia, Canada David W. Tarasick Meteorological Services Centre, Environment Canada, Downsview, Ontario, Canada Everette Joseph Department of Physics and Astronomy, Howard University, Washington, D. C., USA F. J. Schmidlin Wallops Flight Facility, NASA Goddard Space Flight Center, Wallops Island, Virginia, USA W. Wallace McMillan Department of Physics, University of Maryland Baltimore County, Baltimore, Maryland, USA Juying Warner Joint Center for Environmental Technology, University of Maryland Baltimore County, Baltimore, Maryland, USA Eric J. Hintsa Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA James E. Johnson Joint Institute for Study of Atmospheres and Oceans, University of Washington, Seattle, Washington, USA Abstract Daily ozone soundings taken from the R/V Ronald H. Brown from 7 July through 11 August 2004 as part of the Intercontinental Chemical Transport Experiment (INTEX) Ozonesonde Network Study (IONS) are used to investigate the vertical structure of ozone over the Gulf of Maine and to characterize variability in sources of tropospheric ozone: stratosphere, regional convection and lightning, advection, and local boundary layer pollution. These soundings were part of a network of twelve IONS ( http://croc.gsfc.nasa.gov/intex/ions.html) stations that launched ozonesonde-radiosonde packages over the United States and maritime Canada during the INTEX/International Consortium for Atmospheric Research on Transport and Transformation (ICARTT)/New England Air Quality Study (NEAQS) project from 1 July to 15 August 2004. Four of the IONS stations were in mid-Atlantic and northeast United States; four were in southeastern Canada. Although the INTEX/ICARTT goal was to examine pollution influences under stable high-pressure systems, northeastern North America (NENA) during IONS was dominated by weak frontal systems that mixed aged pollution and stratospheric ozone with ozone from more recent pollution and lightning. These sources are quantified to give tropospheric ozone budgets for individual soundings that are consistent with tracers and meteorological analyses. On average, for NENA stations in July-August 2004, tropospheric ozone was composed of the following: 10–15% each local boundary layer and regional sources (the latter including that due to lightning-derived NO) and 20–25% stratospheric ozone, with the balance (∼50%) a mixture of recently advected ozone and aged air of indeterminate origin. Received 18 June 2006; accepted 22 December 2006; published 15 May 2007. Keywords: ozone; tropospheric ozone; ozonesondes; upper troposphere–lower stratosphere; stratosphere-troposphere exchange; lightning. Index Terms: 0365 Atmospheric Composition and Structure: Troposphere: composition and chemistry; 3309 Atmospheric Processes: Climatology (1616, 1620, 3305, 4215, 8408); 3362 Atmospheric Processes: Stratosphere/troposphere interactions; 9325 Geographic Location: Atlantic Ocean; 9350 Geographic Location: North America. Read Full Article (file size: 2097081 bytes) Cited by Citation: Thompson, A. M., et al. (2007), Intercontinental Chemical Transport Experiment Ozonesonde Network Study (IONS) 2004: 2. Tropospheric ozone budgets and variability over northeastern North America, J. Geophys. Res., 112, D12S13, doi:10.1029/2006JD007670. Copyright 2007 by the American Geophysical Union.

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