Zobrazeno 1 - 10
of 73
pro vyhledávání: '"J. F. Davies"'
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 5001-5013 (2021)
Accurate characterization of the water activity and hygroscopicity of aqueous aerosol material allows us to predict the chemical and physical state of aerosol particles exposed to humid conditions in the environment. The hygroscopicity of aerosol det
Externí odkaz:
https://doaj.org/article/5689b5e3f572451bb1a1f58ec63407d2
Autor:
H. K. Lam, R. Xu, J. Choczynski, J. F. Davies, D. Ham, M. Song, A. Zuend, W. Li, Y.-L. S. Tse, M. N. Chan
Publikováno v:
Atmospheric Chemistry and Physics, Vol 21, Pp 2053-2066 (2021)
Organic compounds residing near the surface of atmospheric aerosol particles are exposed to chemical reactions initiated by gas-phase oxidants, such as hydroxyl (OH) radicals. Aqueous droplets composed of inorganic salts and organic compounds can und
Externí odkaz:
https://doaj.org/article/63478e358bef4c2f9d66c09d256d8afa
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 3879-3893 (2020)
The 2-methyltetrols have been widely chosen as chemical tracers for isoprene-derived secondary organic aerosols. While they are often assumed to be relatively unreactive, a laboratory study reported that pure erythritol particles (an analog of 2-meth
Externí odkaz:
https://doaj.org/article/3abc00e1bfd847f18a900bdda5c06c51
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-12 (2019)
Aerosol-cloud interactions are a large source of uncertainty in radiative forcing estimates. Here, the authors show that the radiative effects of clouds are influenced by a combination of aerosol particle distribution, environmental conditions and at
Externí odkaz:
https://doaj.org/article/7f929d3be66b4a27906e8d120f193147
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 9581-9593 (2019)
Atmospheric particles, consisting of inorganic salts, organic compounds and a varying amount of water, can continuously undergo heterogeneous oxidation initiated by gas-phase oxidants at the particle surface, changing the composition and properties o
Externí odkaz:
https://doaj.org/article/11bd501250324070b3a0511cafc2939c
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 2933-2946 (2019)
The role of surface tension (σ) in cloud droplet activation has long been ambiguous. Recent studies have reported observations attributed to the effects of an evolving surface tension in the activation process. However, the adoption of a surface-med
Externí odkaz:
https://doaj.org/article/fbbbcb3678c548098a3b1dc70da0d518
Autor:
H. K. Lam, K. C. Kwong, H. Y. Poon, J. F. Davies, Z. Zhang, A. Gold, J. D. Surratt, M. N. Chan
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 2433-2440 (2019)
Acid-catalyzed multiphase chemistry of epoxydiols formed from isoprene oxidation yields the most abundant organosulfates (i.e., methyltetrol sulfates) detected in atmospheric fine aerosols in the boundary layer. This potentially determines the physic
Externí odkaz:
https://doaj.org/article/5a469883a5344bde94c8153cdee7c814
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 2809-2820 (2018)
Organosulfates are important organosulfur compounds present in atmospheric particles. While the abundance, composition, and formation mechanisms of organosulfates have been extensively investigated, it remains unclear how they transform and evolve
Externí odkaz:
https://doaj.org/article/08892ff488d34cb38b6b39fdf9c13054
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 14415-14431 (2017)
Organic compounds present at or near the surface of aqueous droplets can be efficiently oxidized by gas-phase OH radicals, which alter the molecular distribution of the reaction products within the droplet. A change in aerosol composition affects th
Externí odkaz:
https://doaj.org/article/3c5054984d224703828cf9fe6b9df097
Autor:
B. J. Murray, A. E. Haddrell, S. Peppe, J. F. Davies, J. P. Reid, D. O'Sullivan, H. C. Price, R. Kumar, R. W. Saunders, J. M. C. Plane, N. S. Umo, T. W. Wilson
Publikováno v:
Atmospheric Chemistry and Physics, Vol 12, Iss 18, Pp 8575-8587 (2012)
Iodine oxide particles are known to nucleate in the marine boundary layer where gas phase molecular iodine and organoiodine species are produced by macroalgae. These ultra-fine particles may then grow through the condensation of other materials to si
Externí odkaz:
https://doaj.org/article/2c3f113a3bc54773967c306f1448b53b