Radical chemistry at a UK coastal receptor site – Part 2: experimental radical budgets and ozone production. Woodward-Massey, R., Sommariva, R., Whalley, L. K., Cryer, D. R., Ingham, T., Bloss, W. J., Ball, S. M., Lee, J. D., Reed, C. P., Crilley, L. R., Kramer, L. J., Bandy, B. J., Forster, G. L., Reeves, C. E., Monks, P. S., & Heard, D. E. Technical Report Gases/Field Measurements/Troposphere/Chemistry (chemical composition and reactions), April, 2022.
Radical chemistry at a UK coastal receptor site – Part 2: experimental radical budgets and ozone production [link]Paper  doi  abstract   bibtex   
In our companion paper (Woodward-Massey et al., 2022), we presented measurements of radical species and OH 20 reactivity (k’OH) made in summer 2015 during the ICOZA (Integrated Chemistry of OZone in the Atmosphere) field campaign at the Weybourne Atmospheric Observatory, a site on the east coast of the UK. In the present work, we used the simultaneous measurement of OH, HO2, total RO2, and k’OH to derive experimental (i.e., observationally determined) budgets for all radical species as well as total ROx (= OH + HO2 + RO2). Data were separated according to wind direction: prevailing SW winds (with influence from London and other major conurbations), and all other winds (NW–SE; predominantly marine in origin). 25 In NW–SE air, the ROx budget could be closed during the daytime within experimental uncertainty but OH destruction exceeded OH production, and HO2 production greatly exceeded HO2 destruction while the opposite was true for RO2. In SW air, the ROx budget analysis indicated missing daytime ROx sources but the OH budget was balanced, and the same imbalances were found with the HO2 and RO2 budgets as in NW–SE air. For HO2 and RO2, the budget imbalances were most severe at high NO mixing ratios.
@techreport{woodward-massey_radical_2022,
	type = {preprint},
	title = {Radical chemistry at a {UK} coastal receptor site – {Part} 2: experimental radical budgets and ozone production},
	shorttitle = {Radical chemistry at a {UK} coastal receptor site – {Part} 2},
	url = {https://acp.copernicus.org/preprints/acp-2022-213/},
	abstract = {In our companion paper (Woodward-Massey et al., 2022), we presented measurements of radical species and OH 20 reactivity (k’OH) made in summer 2015 during the ICOZA (Integrated Chemistry of OZone in the Atmosphere) field campaign at the Weybourne Atmospheric Observatory, a site on the east coast of the UK. In the present work, we used the simultaneous measurement of OH, HO2, total RO2, and k’OH to derive experimental (i.e., observationally determined) budgets for all radical species as well as total ROx (= OH + HO2 + RO2). Data were separated according to wind direction: prevailing SW winds (with influence from London and other major conurbations), and all other winds (NW–SE; predominantly marine in origin). 25 In NW–SE air, the ROx budget could be closed during the daytime within experimental uncertainty but OH destruction exceeded OH production, and HO2 production greatly exceeded HO2 destruction while the opposite was true for RO2. In SW air, the ROx budget analysis indicated missing daytime ROx sources but the OH budget was balanced, and the same imbalances were found with the HO2 and RO2 budgets as in NW–SE air. For HO2 and RO2, the budget imbalances were most severe at high NO mixing ratios.},
	language = {en},
	urldate = {2022-12-04},
	institution = {Gases/Field Measurements/Troposphere/Chemistry (chemical composition and reactions)},
	author = {Woodward-Massey, Robert and Sommariva, Roberto and Whalley, Lisa K. and Cryer, Danny R. and Ingham, Trevor and Bloss, William J. and Ball, Stephen M. and Lee, James D. and Reed, Chris P. and Crilley, Leigh R. and Kramer, Louisa J. and Bandy, Brian J. and Forster, Grant L. and Reeves, Claire E. and Monks, Paul S. and Heard, Dwayne E.},
	month = apr,
	year = {2022},
	doi = {10.5194/acp-2022-213},
}
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