ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-7-4229-2007 Mixing between a stratospheric intrusion and a biomass burning plume Brioude J. 1 Cooper O. R. 1 2 Trainer M. 1 Ryerson T. B. 1 Holloway J. S. 1 2 Baynard T. 1 2 Peischl J. 1 2 Warneke C. 1 2 Neuman J. A. 1 2 De Gouw J. 1 2 Stohl A. 3 Eckhardt S. 3 Frost G. J. 1 2 McKeen S. A. 1 2 Hsie E.-Y. 1 2 Fehsenfeld F. C. 1 2 Nédélec P. 4 Chemical Sciences Division, Earth Science Reasearch Laboratory, NOAA, Boulder, Colorado, USA Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, Colorado, USA Norwegian Institute for Air Research, Kjeller, Norway Laboratoire d'Aérologie, UMR 5560, Observatoire Midi-Pyrénées, Toulouse, France 20 08 2007 7 16 4229 4235 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys.net/7/4229/2007/acp-7-4229-2007.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/7/4229/2007/acp-7-4229-2007.pdf

Ozone, carbon monoxide, aerosol extinction coefficient, acetonitrile, nitric acid and relative humidity measured from the NOAA P3 aircraft during the TexAQS/GoMACCS 2006 experiment, indicate mixing between a biomass burning plume and a stratospheric intrusion in the free troposphere above eastern Texas. Lagrangian-based transport analysis and satellite imagery are used to investigate the transport mechanisms that bring together the tropopause fold and the biomass burning plume originating in southern California, which may affect the chemical budget of tropospheric trace gases.

 References Andreae, M. O. and Merlet, P.: Emission of trace gases and aerosols from biomass burning, Global Biogeochem. Cycles, 15, 955–966, 2001. Baynard, T., Garland, R. M., Ravishankara, A. R., Tolbert, M. A., and Lovejoy, E. R.: Key factors influencing the relative humidity dependence of aerosol light scattering, Geophys. Res. Lett., 33, L06813, doi:10.1029/2005GL024898, 2006. Cho, J. Y. N., Newell, R. E., Browell, E. V., Grant, W. B., Butler, C. F., and Fenn, M. A.: Observation of pollution plume capping by a tropopause fold, Geophys. Res. Lett., 28, 3243–3246, 2001. Cooper, O. R., Forster, C., Parrish, D., Dunlea, E., Hubler, G., Fehsenfeld, F., Holloway, J., Oltmans, S., Johnson, B., Wimmers, A., and Horowitz, L.: On the life-cycle of a stratospheric intrusion and its dispersion into polluted warm conveyor belts, J. Geophys. Res., 109, D23S09, doi:10.1029/2003JD004006, 2004. Cooper, O. R., Stohl, A., Hubler, G., Hsie, E. Y., Parrish, D. D., Tuck, A. F., Kiladis, G. N., Oltmans, S. J., Johnson, B. J., Shapiro, M., Moody, J. L., and Lefohn, A. S.: Direct transport of midlatitude stratospheric ozone into the lower troposphere and marine boundary layer of the tropical Pacific Ocean, J. Geophys. Res., 110, D23310, doi:10.1029/2005JD005783, 2005. % %Damoah, R., Spichtinger, N., Forster, C., James, P., Mattis, I., Wandinger, U., Beirle, S., and Stohl, A. (2004): Around the world in 17 days – hemispheric-scale transport of forest fire smoke from Russia in May 2003, Atmos. Chem. Phys., 4, 1311–1321 Danielsen, E. F.: Stratospheric-tropospheric exchanges based upon radioactivity, ozone and potential vorticity, J. Atmos. Sci., 25, 502–518, 1968 De Gouw, J. A., Warneke, C., Parrish, D. D., Holloway, J. S., Trainer, M., and Fehsenfeld, F. C.: Emission sources and ocean uptake of acetonitrile (CH3CN) in the atmosphere, J. Geophys. Res., 108(D11), 4329, doi:10.1029/2002JD002897, 2003. De Gouw, J. A., Warneke, C., Stohl, A., Wollny, A. G., Brock, C. A., Cooper, O. R., Holloway, J. S., Trainer, M., Fehsenfeld, F. C., Atlas, E. L., Donnelly, S. G., Stroud, V., and Lueb, A.: Volatile organic compounds composition of merged and aged forest fire plumes from Alaska and western Canada, J. Geophys. Res., 111, D10303, doi:10.1029/2005JD006175, 2006. De Gouw, J. and Warneke, C.: Measurements of volatile organic compounds in the earths atmosphere using proton-transfer-reaction mass spectrometry, Mass Spectrom. Rev., 26(2), 223–257, 2007. Esler J. G., Tan, D. G. H., Haynes, P. H., Evans, M. J., Law, K. S., Plantevin, P. H., and Pyle, J. A.: Stratosphere-troposphere exchange: Chemical sensitivity to mixing, J. Geophys. Res., 106(D5), 4717–4731, doi:10.1029/2000JD900405, 2001. Frost, G. J., McKeen, S. A., Trainer, M., et al.: Effects of changing power plant NOx emissions on ozone in the eastern United States: Proof of concept, J. Geophys. Res., 111, D12306, doi:10.1029/2005JD006354, 2006. Holloway, J. S., Jakoubek, R. O., Parrish, D. D., Gerbig, C., Volz-Thomas, A., Schmitgen, S., Fried, A., Wert, B., B.,, and Drummond, J. R.: Airborne intercomparison of vacuum ultraviolet fluorescence and tunable diode laser absorption measurements of tropospheric carbon monoxide, J. Geophys. Res., 105(D19), 24 251–24 262, 2000. Honrath, R. E., Owen, R. C., Val Martin, M., Reid, J. S., Lapina, K., Fialho, P., Dziobak, M. P., Kleissl, J., and Westphal, D. L.: Regional and hemispheric impacts of anthropogenic and biomass burning emissions on summertime CO and O3 in the North Atlantic lower free troposphere, J. Geophys. Res., 109, D24310, doi:10.1029/2004JD005147, 2004. Hoor, P., Fischer, H., Lange, L., Lelieveld, J., and Brunner, D.: Seasonal variations of a mixing layer in the lowermost stratosphere as identified by the CO-O3 correlation from in situ measurements, J. Geophys. Res., 107(D5), 4044, doi:10.1029/2000JD000289, 2002. % %Parrish, D. D., M. Trainer, J. S. Holloway, J. E. Yee, M. S. Warshawsky, F. C. Fehsenfeld, G. L. Forbes, and J. L. Moody (1998), Relationships between ozone and carbon monoxide at surface sites in the North Atlantic region, J. Geophys. Res., 103(D11), 13,357–13,376. % %Neuman, J.A., D.D. Parrish, M. Trainer, T.B. Ryerson, J.S. Holloway, J.B. Nowak, A. Swanson, F. Flocke, J.M. Roberts, S.S. Brown, H. Stark, R. Sommariva, A. Stohl, R. Peltier, R. Weber, A.G. Wollny, D.T. Sueper, G. Hubler and F.C. Fehsenfeld (2006), Reactive nitrogen transport and photochemistry in urban plumes over the North Atlantic Ocean, J. Geophys. Res., 111, doi:10.1029/2005JD007010 James, P., Stohl, A., Forster, C., Eckhardt, S., Seibert, P., and Frank, A.: A 15-year climatology of stratosphere-troposphere exchange with a Lagrangian particle dispersion model: 2. Mean climate and seasonal variability, J. Geophys. Res., 108(D12), 8522, doi:10.1029/2002JD002639, 2003 Kentarchos, A. S., and G. J. Roelofs: A model study of stratospheric ozone in the troposphere and its contribution to tropospheric OH formation, J. Geophys. Res., 108(D12), 8517, doi:10.1029/2002JD002598, 2003. McKeen, S. A., Wotawa, G., Parrish, D. D., Holloway, J. S., Buhr, M. P., Hubler, G., Fehsenfeld, F. C., and Meagher, J. F.: Ozone production from Canadian wildfires during June and July of 1995, J. Geophys. Res., 107(D14), 4192, doi:10.1029/2001JD000697, 2002. Nedelec, P., Cammas, J. -P., Thouret, V., Athier, G., Cousin, J. -M., Legrand, C., Abonnel, C., Lecoeur, F., Cayez, G., and Marizy, C.: An improved infrared carbon monoxide analyser for routine measurements aboard commercial Airbus aircraft: technical validation and first scientific results of the MOZAIC III programme, Atmos. Chem. Phys., 3, 1551–1564, 2003. Neuman, J. A., Huey, L. G., Dissly R. W. et al.: Fast-response airborne in situ measurements of HNO3 during the Texas Air Quality Study, J. Geophys. Res., 107(D20), 4436, doi:10.1029/2001JD001437, 2002. Parrish, D. D., Holloway, J. S., Jakoubek, R., Trainer, M., Ryerson, T. B., Hubler, G., Fehsenfeld, F. C., Moody, J. L., and Cooper, O. R.: Mixing of anthropogenic pollution with stratospheric ozone: A case study from the North Atlantic wintertime troposphere, J. Geophys. Res., 105, 24 363–24 374, 2000. Price, J., and G. Vaughan: The potential for stratosphere-troposphere exchange in cut-off-low systems. Quart. J. Roy. Meteorol. Soc., 119, 343–365, 1993 Reid, H. J. and Vaughan, G.: Convective mixing in a tropopause fold, Q. J. R. Meteorol. Soc.,130, 1195-1221, 2004. Sprenger, M., and H. Wernli: A northern hemispheric climatology of cross-tropopause exchange for the ERA15 time period (1979–1993), J. Geophys. Res., 108(D12), 8521, doi:10.1029/2002JD002636, 2003. Sprenger, M., Croci Maspoli, M., and Wernli, H.: Tropopause folds and cross-tropopause transport: A global investigation based upon ECMWF analyses for the time period March 2000 to February 2001, J. Geophys. Res., 108(D12), 8518, doi:10.1029/2002JD002587, 2003. Stohl, A., Spichtinger-Rakowsky, N., Bonasoni, P., Feldmann, H., Memmesheimer, M., Scheel, H. E., Trickl, T., Hubener, S. H., Ringer, W., and Mandl, M.: The influence of stratospheric intrusions on alpine ozone concentrations, Atmos. Environ., 34, 1323–1354, 2000. Stohl, A., Forster, C., Frank, A., Seibert, P., and Wotawa, G.: Technical note: The Lagrangian particle dispersion model FLEXPART version 6.2., Atmos. Chem. Phys., 5, 2461–2474, 2005. Stohl, A., Berg, T., Burkhart, J. E., et al.: Arctic smoke-record high air pollution levels in the European Arctic due to agricultural fires in Eastern Europe, Atmos. Chem. Phys., 7, 511-534, 2007. Thouret, V., Marenco, A., Nedelec, P., and Grouhel, C.: Ozone climatologies at 9–12 km altitude as seen by the MOZAIC airborne program between September 1994 and August 1996, J. Geophys. Res., 103, 25 653–25 679, 1998. Warneke, C., de Gouw J. A. , Stohl, A. et al.: Biomass burning and anthropogenic sources of CO over New England in the summer 2004, J. Geophys. Res., 111, D23S15, doi:10.1029/2005JD006878, 2006. % %Warneke, C., J.A. deGouw, P.D. Goldan, W.C. Kuster, J.S. Holloway, E.J. Williams, B.M. Lerner, S.A. McKeen, D.D. Parrish, M. Trainer, F.C. Fehsenfeld, S. Kato, E.L. Atlas, A. Baker and D.R. Blake (2006) Determination of urban VOC emissions ratios and comparison with inventories, J. Geophys. Res., 111, doi:10.1029/2005JD006878 %Warneke,2006 Wotawa, G. and Trainer, M.: The influence of Canadian forest fires on pollutant concentrations in the United States, Science, 288, 324–328, 2000.