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Peroxy Radicals and Ozone Photochemistry in Air Masses Undergoing Long-range Transport : Volume 9, Issue 5 (10/09/2009)

By Parker, A. E.

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Book Id: WPLBN0003972252
Format Type: PDF Article :
File Size: Pages 46
Reproduction Date: 2015

Title: Peroxy Radicals and Ozone Photochemistry in Air Masses Undergoing Long-range Transport : Volume 9, Issue 5 (10/09/2009)  
Author: Parker, A. E.
Volume: Vol. 9, Issue 5
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Jacob, M. J., Stewart, D. J., Monks, P. S., Penkett, S. A., Whalley, L. K., Parker, A. E.,...Methven, J. (2009). Peroxy Radicals and Ozone Photochemistry in Air Masses Undergoing Long-range Transport : Volume 9, Issue 5 (10/09/2009). Retrieved from http://worldlibrary.org/


Description
Description: Department of Chemistry, University of Leicester, Leicester, LE1 7RH, UK. Concentrations of peroxy radicals (HO2iRiO2) in addition to other trace gases were measured onboard the UK Meteorological Office/Natural Environment Research Council British Aerospace 146-300 atmospheric research aircraft during the Intercontinental Transport of Ozone and Precursors (ITOP) campaign based at Horta Airport, Faial, Azores (38.58° N, 28.72° W) in July/August 2004. The overall peroxy radical altitude profile displays an increase with altitude that is likely to have been impacted by the effects of long-range transport. The peroxy radical altitude profile for air classified as of marine origin shows no discernable altitude profile. A range of air-masses were intercepted with varying source signatures, including those with aged American and Asian signatures, air-masses of biomass burning origin, and those that originated from the east coast of the United States. Enhanced peroxy radical concentrations have been observed within this range of air-masses indicating that long-range transported air-masses traversing the Atlantic show significant photochemical activity. The net ozone production at clear sky limit is in general negative, and as such the summer mid-Atlantic troposphere is at limit net ozone destructive. However, there is clear evidence of positive ozone production even at clear sky limit within air masses undergoing long-range transport, and during ITOP especially between 5 and 5.5 km, which in the main corresponds to a flight that extensively sampled air with a biomass burning signature. Ozone production was NOx limited throughout ITOP, as evidenced by a good correlation (r2=0.72) between P(O3) and NO. Strong positive net ozone production has also been seen in varying source signature air-masses undergoing long-range transport, including but not limited to low-level export events, and export from the east coast of the United States.

Summary
Peroxy radicals and ozone photochemistry in air masses undergoing long-range transport

Excerpt
Apel, E. C., Hills, A. J., Lueb, R., Zindel, S., Eisele, S., and Riemer, D. D.: A fast-GC/MS system to measure C2 to C4 carbonyls and methanol aboard aircraft, J. Geophys. Res., 108(D20), 8794, doi:10.1029/2002JD003199, 2003.; Atkinson, R.: Kinetics and mechanisms of the gas-phase reactions of the hydroxyl radical with organic compounds under atmospheric conditions, Chem. Rev., 86(1), 69–201, 1986.; Atkinson, R.: Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes, Atmos. Chem. Phys., 3, 2233–2307, 2003.; Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson Jr, R. F., Hynes, R. G., Jenkin, M. E., Kerr, J. A., Rossi, M. J., and Troe, J.: Summary of Evaluated Kinetic and Photochemical Data for Atmospheric Chemistry, Web Version July, 2004, http://www.iupac-kinetic.ch.cam.ac.uk/summary/IUPACsumm_web_July2004.pdf.; Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson Jr, R. F., Hynes, R. G., Jenkin, M. E., Kerr, J. A., Rossi, M. J., and Troe, J.: Summary of Evaluated Kinetic and Photochemical Data for Atmospheric Chemistry, Web Version March, 2005, http://www.iupac-kinetic.ch.cam.ac.uk/summary/IUPACsumm_web_March2005.pdf.; Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson Jr, R. F., Hynes, R. G., Jenkin, M. E., Kerr, J. A., Rossi, M. J., and Troe, J.: Summary of Evaluated Kinetic and Photochemical Data for Atmospheric Chemistry, Web Version February, 2006, http://www.iupac-kinetic.ch.cam.ac.uk/summary/IUPACsumm_web_Feb2006.pdf.; Boodaghians, R. B., Hall, I. W., Toby, F. S., and Wayne, R. P.: Absolute determinations of the kinetics and temperature dependences of the reactions of OH with a series of alkynes, J. Chem. Soc. Faraday T., 2, 83, 1987.; Cantrell, C. A. and Stedman, D. H.: A Possible Technique for the Measurement of Atmospheric Peroxy-Radicals, Geophys. Res. Lett., 9, 846–849, 1982.; Cantrell, C. A., Stedman, D. H., and Wendel, G. J.: Measurement of Atmospheric Peroxy-Radicals by Chemical Amplification, Anal. Chem., 56, 1496–1502, 1984.; Cantrell, C. A., Shetter, R. E., Calvert, J. G., Parrish, D. D., Fehsenfeld, F. C., Goldan, P. D., Kuster, W., Williams, E. J., Westberg, H. H., Allwine, G., and Martin, R.: Peroxy-Radicals as Measured in Rose and Estimated from Photostationary State Deviations, J. Geophys. Res. Atmos., 98, 18 355–18 366, 1993.; Cantrell, C. A., Shetter, R. E., and Calvert, J. G.: Dual-inlet chemical amplifier for atmospheric peroxy radical measurements, Anal. Chem., 68, 4194–4199, 1996.; Cantrell, C. A., Edwards, G. D., Stephens, S., Mauldin, L., Kosciuch, E., Zondlo, M., and Eisele, F.: Peroxy radical observations using chemical ionization mass spectrometry during TOPSE, J. Geophys. Res. Atmos., 108(D6), 8371, doi:10.1029/2002JD002715, 2003a.; Cantrell, C. A., Edwards, G. D., Stephens, S., Mauldin, R. L., Zondlo, M. A., Kosciuch, E., Eisele, F. L., Shetter, R. E., Lefer, B. L., Hall, S., Flocke, F., Weinheimer, A., Fried, A., Apel, E., Kondo, Y., Blake, D. R., Blake, N. J., Simpson, I. J., Bandy, A. R., Thornton, D. C., Heikes, B. G., Singh, H. B., Brune, W. H., Harder, H., Martinez, M., Jacob, D. J., Avery, M. A., Barrick, J. D., Sachse, G. W., Olson, J. R., Crawford, J. H., and Clarke, A. D.: Peroxy radical behavior during the Transport and Chemical Evolution over the Pacific (TRACE-P) campaign as measured aboard the NASA P-3B aircraft, J. Geophys. Res. Atmos., 108(D20), 8791, doi:10.1029/2003JD003674, 2003b.; Derwent, R. G., Stevenson, D. S., Collins, W. J., and Johnson, C. E.: Intercontinental transport and the origins of the ozone observed at surface sites in Europe, Atmos.

 

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