Zobrazeno 1 - 10
of 897
pro vyhledávání: '"J. R Hopkins"'
Autor:
B. S. Nelson, Z. Liu, F. A. Squires, M. Shaw, J. R. Hopkins, J. F. Hamilton, A. R. Rickard, A. C. Lewis, Z. Shi, J. D. Lee
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 9031-9044 (2024)
In recent years, clean air policies have led to reductions in air pollution across China. Alongside this, emerging carbon neutrality (CN) policies that aim to address the impacts of climate change may also deliver air quality (AQ) co-benefits or clim
Externí odkaz:
https://doaj.org/article/cdd6f7d6d6e44b3b8e2c1f8f16eb22b8
Autor:
J. Li, A. C. Lewis, J. R. Hopkins, S. J. Andrews, T. Murrells, N. Passant, B. Richmond, S. Hou, W. J. Bloss, R. M. Harrison, Z. Shi
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 6219-6231 (2024)
Anthropogenic non-methane volatile organic compounds (VOCs) in the United Kingdom have been substantially reduced since 1990, which is, in part, attributed to controls on evaporative and vehicle tailpipe emissions. Over time, other sources with a dif
Externí odkaz:
https://doaj.org/article/d692ae981a244e8eabad25d10039240a
Autor:
J. E. Dyson, L. K. Whalley, E. J. Slater, R. Woodward-Massey, C. Ye, J. D. Lee, F. Squires, J. R. Hopkins, R. E. Dunmore, M. Shaw, J. F. Hamilton, A. C. Lewis, S. D. Worrall, A. Bacak, A. Mehra, T. J. Bannan, H. Coe, C. J. Percival, B. Ouyang, C. N. Hewitt, R. L. Jones, L. R. Crilley, L. J. Kramer, W. J. F. Acton, W. J. Bloss, S. Saksakulkrai, J. Xu, Z. Shi, R. M. Harrison, S. Kotthaus, S. Grimmond, Y. Sun, W. Xu, S. Yue, L. Wei, P. Fu, X. Wang, S. R. Arnold, D. E. Heard
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 5679-5697 (2023)
The impact of heterogeneous uptake of HO2 on aerosol surfaces on radical concentrations and the O3 production regime in Beijing in summertime was investigated. The uptake coefficient of HO2 onto aerosol surfaces, γHO2, was calculated for the AIRPRO
Externí odkaz:
https://doaj.org/article/81944c073cea42969e79a063ef590b28
Autor:
D. J. Bryant, B. S. Nelson, S. J. Swift, S. H. Budisulistiorini, W. S. Drysdale, A. R. Vaughan, M. J. Newland, J. R. Hopkins, J. M. Cash, B. Langford, E. Nemitz, W. J. F. Acton, C. N. Hewitt, T. Mandal, B. R. Gurjar, Shivani, R. Gadi, J. D. Lee, A. R. Rickard, J. F. Hamilton
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 61-83 (2023)
Isoprene and monoterpene emissions to the atmosphere are generally dominated by biogenic sources. The oxidation of these compounds can lead to the production of secondary organic aerosol; however the impact of this chemistry in polluted urban setting
Externí odkaz:
https://doaj.org/article/a15d4bf50100412eb39a44b503d4d1d9
Autor:
A. W. Mayhew, B. H. Lee, J. A. Thornton, T. J. Bannan, J. Brean, J. R. Hopkins, J. D. Lee, B. S. Nelson, C. Percival, A. R. Rickard, M. D. Shaw, P. M. Edwards, J. F. Hamilton
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 14783-14798 (2022)
Isoprene nitrates are important chemical species in the atmosphere which contribute to the chemical cycles that form ozone and secondary organic aerosol (SOA) with implications for climate and air quality. Accurate chemical mechanisms are important f
Externí odkaz:
https://doaj.org/article/6d34dd00a11d418b9c2599734a7e669c
Autor:
B. S. Nelson, G. J. Stewart, W. S. Drysdale, M. J. Newland, A. R. Vaughan, R. E. Dunmore, P. M. Edwards, A. C. Lewis, J. F. Hamilton, W. J. Acton, C. N. Hewitt, L. R. Crilley, M. S. Alam, Ü. A. Şahin, D. C. S. Beddows, W. J. Bloss, E. Slater, L. K. Whalley, D. E. Heard, J. M. Cash, B. Langford, E. Nemitz, R. Sommariva, S. Cox, Shivani, R. Gadi, B. R. Gurjar, J. R. Hopkins, A. R. Rickard, J. D. Lee
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 13609-13630 (2021)
The Indian megacity of Delhi suffers from some of the poorest air quality in the world. While ambient NO2 and particulate matter (PM) concentrations have received considerable attention in the city, high ground-level ozone (O3) concentrations are an
Externí odkaz:
https://doaj.org/article/8455a455283641c394dc4dbf6618bd0a
Autor:
R. L. Wagner, N. J. Farren, J. Davison, S. Young, J. R. Hopkins, A. C. Lewis, D. C. Carslaw, M. D. Shaw
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 6083-6100 (2021)
Over the last 2 decades, the importance of emissions source types of atmospheric pollutants in urban areas has undergone significant change. In particular, there has been a considerable reduction in emissions associated with road vehicles. Understand
Externí odkaz:
https://doaj.org/article/7948fdd338f44cad85f591c7a9cbfbd4
Autor:
C. E. Reeves, G. P. Mills, L. K. Whalley, W. J. F. Acton, W. J. Bloss, L. R. Crilley, S. Grimmond, D. E. Heard, C. N. Hewitt, J. R. Hopkins, S. Kotthaus, L. J. Kramer, R. L. Jones, J. D. Lee, Y. Liu, B. Ouyang, E. Slater, F. Squires, X. Wang, R. Woodward-Massey, C. Ye
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 6315-6330 (2021)
Isoprene is the most important biogenic volatile organic compound in the atmosphere. Its calculated impact on ozone (O3) is critically dependent on the model isoprene oxidation chemical scheme, in particular the way the isoprene-derived organic nitra
Externí odkaz:
https://doaj.org/article/1dbf53f3fc304efc8744f7ca8e1afc24
Autor:
S. E. Wilde, P. A. Dominutti, G. Allen, S. J. Andrews, P. Bateson, S. J.-B. Bauguitte, R. R. Burton, I. Colfescu, J. France, J. R. Hopkins, L. Huang, A. E. Jones, T. Lachlan-Cope, J. D. Lee, A. C. Lewis, S. D. Mobbs, A. Weiss, S. Young, R. M. Purvis
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 3741-3762 (2021)
The North Sea is Europe's key oil and gas (O&G) basin with the output currently meeting 3 %–4 % of global oil supply. Despite this, there are few observational constraints on the nature of atmospheric emissions from this region, with most informati
Externí odkaz:
https://doaj.org/article/1ac34931613045af96a6169910f759d3
Autor:
M. J. Newland, D. J. Bryant, R. E. Dunmore, T. J. Bannan, W. J. F. Acton, B. Langford, J. R. Hopkins, F. A. Squires, W. Dixon, W. S. Drysdale, P. D. Ivatt, M. J. Evans, P. M. Edwards, L. K. Whalley, D. E. Heard, E. J. Slater, R. Woodward-Massey, C. Ye, A. Mehra, S. D. Worrall, A. Bacak, H. Coe, C. J. Percival, C. N. Hewitt, J. D. Lee, T. Cui, J. D. Surratt, X. Wang, A. C. Lewis, A. R. Rickard, J. F. Hamilton
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 1613-1625 (2021)
The impact of emissions of volatile organic compounds (VOCs) to the atmosphere on the production of secondary pollutants, such as ozone and secondary organic aerosol (SOA), is mediated by the concentration of nitric oxide (NO). Polluted urban atmosph
Externí odkaz:
https://doaj.org/article/b9fb4394f93a4de1940b1eb184c07c30