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    Academic Journals

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• Is the ocean surface a source of nitrous acid (HONO) in the marine boundary layer?

  Authors:Leigh R. Crilley, Louisa J. Kramer, Francis D. Pope, Chris Reed, James D. Lee, Lucy J. Carpenter, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 24) Peer-Reviewed

  Dec. 16, 2021400 words Brief article Nitrous acid, HONO, is a key net photolytic precursor to OH radicals in the atmospheric boundary layer. As OH is the dominant atmospheric oxidant, driving the removal of many primary pollutants and the formation of...

• In situ ozone production is highly sensitive to volatile organic compounds in Delhi, India.

  Authors:Beth S. Nelson, Gareth J. Stewart, Will S. Drysdale, Mike J. Newland, Adam R. Vaughan, Rachel E. Dunmore, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 17) Peer-Reviewed

  Sept. 13, 2021485 words Article The Indian megacity of Delhi suffers from some of the poorest air quality in the world. While ambient NO.sub.2 and particulate matter (PM) concentrations have received considerable attention in the city, high...

• Nitrous acid (HONO) emissions under real-world driving conditions from vehicles in a UK road tunnel.

  Authors:Louisa J. Kramer, Leigh R. Crilley, Thomas J. Adams, Stephen M. Ball, Francis D. Pope, and William J. BlossFrom:Atmospheric Chemistry and Physics (Vol. 20, Issue 9) Peer-Reviewed

  May 5, 2020270 words Brief article Measurements of atmospheric boundary layer nitrous acid (HONO) and nitrogen oxides (NO.sub.x) were performed in summer 2016 inside a city centre road tunnel in Birmingham, United Kingdom. HONO and NO.sub.x mixing ratios...

• The atmospheric impacts of monoterpene ozonolysis on global stabilised Criegee intermediate budgets and SO.sub.2 oxidation: experiment, theory and modelling

  Authors:Mike J. Newland, Andrew R. Rickard, Mathew J. Evans, Luc Vereecken, and William J. BlossFrom:Atmospheric Chemistry and Physics (Vol. 18, Issue 8) Peer-Reviewed

  May 2, 2018518 words Author abstract, Bri... The gas-phase reaction of alkenes with ozone is known to produce stabilised Criegee intermediates (SCIs). These biradical/zwitterionic species have the potential to act as atmospheric oxidants for trace pollutants such...

• 60 years of UK visibility measurements: impact of meteorology and atmospheric pollutants on visibility

  Authors:Ajit Singh, William J. Bloss, and Francis D. PopeFrom:Atmospheric Chemistry and Physics (Vol. 17, Issue 3) Peer-Reviewed

  Feb. 13, 2017377 words Brief article Reduced visibility is an indicator of poor air quality. Moreover, degradation in visibility can be hazardous to human safety; for example, low visibility can lead to road, rail, sea and air accidents. In this paper, we...

• An instrument for in situ measurement of total ozone reactivity.

  Authors:Roberto Sommariva, Louisa J. Kramer, Leigh R. Crilley, Mohammed S. Alam, and William J. BlossFrom:Atmospheric Measurement Techniques (Vol. 13, Issue 3) Peer-Reviewed

  Apr. 2, 2020241 words Brief article We present an instrument for the measurement of total ozone reactivity - the reciprocal of the chemical lifetime of ozone (O.sub.3) - in the troposphere. The Total Ozone Reactivity System (TORS) was developed with the...

• Intercomparison of nitrous acid (HONO) measurement techniques in a megacity (Beijing).

  Authors:Leigh R. Crilley, Louisa J. Kramer, Bin Ouyang, Jun Duan, Wenqian Zhang, Shengrui Tong, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 12) Peer-Reviewed

  Dec. 9, 2019332 words Brief article Nitrous acid (HONO) is a key determinant of the daytime radical budget in the daytime boundary layer, with quantitative measurement required to understand OH radical abundance. Accurate and precise measurements of HONO...

• Interference from alkenes in chemiluminescent NO.sub.x measurements.

  Authors:Mohammed S. Alam, Leigh R. Crilley, James D. Lee, Louisa J. Kramer, Christian Pfrang, Mónica Vázquez-Moreno, et al.From:Atmospheric Measurement Techniques (Vol. 13, Issue 11) Peer-Reviewed

  Nov. 10, 2020436 words Article Nitrogen oxides (NOx=NO+NO2) are critical intermediates in atmospheric chemistry and air pollution. NO.sub.x levels control the cycling and hence abundance of the primary atmospheric oxidants OH and NO.sub.3 and regulate...

• Observations of speciated isoprene nitrates in Beijing: implications for isoprene chemistry.

  Authors:Claire E. Reeves, Graham P. Mills, Lisa K. Whalley, W. Joe F. Acton, William J. Bloss, Leigh R. Crilley, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 8) Peer-Reviewed

  Apr. 27, 2021490 words Article Isoprene is the most important biogenic volatile organic compound in the atmosphere. Its calculated impact on ozone (O.sub.3) is critically dependent on the model isoprene oxidation chemical scheme, in particular the way...

• Kinetics and products of the IO self-reaction

  Authors:William J. Bloss, David M. Rowley, R. Anthony Cox, and Roderic L. JonesFrom:Journal of Physical Chemistry A (Vol. 105, Issue 33) Peer-Reviewed

  Aug. 23, 200142 words Article

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• Validity and limitations of simple reaction kinetics to calculate concentrations of organic compounds from ion counts in PTR-MS.

  Authors:Rupert Holzinger, W. Joe F. Acton, William J. Bloss, Martin Breitenlechner, Leigh R. Crilley, Sébastien Dusanter, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 11) Peer-Reviewed

  Nov. 27, 2019360 words Brief article In September 2017, we conducted a proton-transfer-reaction mass-spectrometry (PTR-MS) intercomparison campaign at the CESAR observatory, a rural site in the central Netherlands near the village of Cabauw. Nine research...

• Size-dependent chemical ageing of oleic acid aerosol under dry and humidified conditions

  Authors:Suad S. Al-Kindi, Francis D. Pope, David C. Beddows, William J. Bloss, and Roy M. HarrisonFrom:Atmospheric Chemistry and Physics (Vol. 16, Issue 24) Peer-Reviewed

  Dec. 16, 2016360 words Author abstract, Bri... A chemical reaction chamber system has been developed for the processing of oleic acid aerosol particles with ozone under two relative humidity conditions: dry and humidified to 65 %. The apparatus...

• Long-term trends in air quality in major cities in the UK and India: a view from space.

  Authors:Karn Vohra, Eloise A. Marais, Shannen Suckra, Louisa Kramer, William J. Bloss, Ravi Sahu, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 8) Peer-Reviewed

  Apr. 29, 2021428 words Article Air quality networks in cities can be costly and inconsistent and typically monitor a few pollutants. Space-based instruments provide global coverage spanning more than a decade to determine trends in air quality,...

• Evaluating the sensitivity of radical chemistry and ozone formation to ambient VOCs and NO.sub.x in Beijing.

  Authors:Lisa K. Whalley, Eloise J. Slater, Robert Woodward-Massey, Chunxiang Ye, James D. Lee, Freya Squires, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 3) Peer-Reviewed

  Feb. 12, 2021813 words Article Measurements of OH, HO.sub.2, complex RO.sub.2 (alkene- and aromatic-related RO.sub.2) and total RO.sub.2 radicals taken during the integrated Study of AIR Pollution PROcesses in Beijing (AIRPRO) campaign in central...

• AtChem (version 1), an open-source box model for the Master Chemical Mechanism.

  Authors:Roberto Sommariva, Sam Cox, Chris Martin, Kasia BoroÅska, Jenny Young, Peter K. Jimack, et al.From:Geoscientific Model Development (Vol. 13, Issue 1) Peer-Reviewed

  Jan. 27, 2020277 words Brief article AtChem is an open-source zero-dimensional box model for atmospheric chemistry. Any general set of chemical reactions can be used with AtChem, but the model was designed specifically for use with the Master Chemical...

• HONO measurement by differential photolysis

  Authors:Chris Reed, Charlotte A. Brumby, Leigh R. Crilley, Louisa J. Kramer, William J. Bloss, Paul W. Seakins, et al.From:Atmospheric Measurement Techniques (Vol. 9, Issue 6) Peer-Reviewed

  June 7, 2016145 words Brief article Nitrous acid (HONO) has been quantitatively measured in situ by differential photolysis at 385 and 395 nm, and subsequent detection as nitric oxide (NO) by the chemiluminescence reaction with ozone...

• Rate of gas phase association of hydroxyl radical and nitrogen dioxide

  Authors:Andrew K. Mollner, Sivakumaran Valluvadasan, Lin Feng, Matthew K. Sprague, Mitchio Okumura, Daniel B. Milligan, et al.From:Science (Vol. 330, Issue 6004) Peer-Reviewed

  Oct. 29, 2010145 words Author abstract, Rep...

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• Atmospheric conditions and composition that influence PM.sub.2.5 oxidative potential in Beijing, China.

  Authors:Steven J. Campbell, Kate Wolfer, Battist Utinger, Joe Westwood, Zhi-Hui Zhang, Nicolas Bukowiecki, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 7) Peer-Reviewed

  Apr. 12, 2021557 words Article Epidemiological studies have consistently linked exposure to PM.sub.2.5 with adverse health effects. The oxidative potential (OP) of aerosol particles has been widely suggested as a measure of their potential toxicity....

• Kinetics of the ClO self-reaction and 210 nm absorption cross section of the ClO dimer

  Authors:William J. Bloss, Scott L. Nickolaisen, Ross J. Salawitch, Randall R. Friedl, and Stanley P. SanderFrom:Journal of Physical Chemistry A (Vol. 105, Issue 50) Peer-Reviewed

  Dec. 20, 2001 Article

   Citation Only

• Introduction to the special issue "In-depth study of air pollution sources and processes within Beijing and its surrounding region (APHH-Beijing)"

  Authors:Zongbo Shi, Tuan Vu, Simone Kotthaus, Roy M. Harrison, Sue Grimmond, Siyao Yue, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 11) Peer-Reviewed

  June 5, 2019280 words Brief article

  The Atmospheric Pollution and Human Health in a Chinese Megacity (APHH-Beijing) programme is an international collaborative project focusing on understanding the sources, processes and health effects of air pollution...