Zobrazeno 1 - 10
of 81
pro vyhledávání: '"T. A. Bertram"'
Autor:
J. K. Radtke, B. N. Kies, W. A. Mottishaw, S. M. Zeuli, A. T. H. Voon, K. L. Koerber, G. W. Petty, M. P. Vermeuel, T. H. Bertram, A. R. Desai, J. P. Hupy, R. B. Pierce, T. J. Wagner, P. A. Cleary
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 2833-2847 (2024)
Ozone is a pollutant formed in the atmosphere by photochemical processes involving nitrogen oxides (NOx) and volatile organic compounds (VOCs) when exposed to sunlight. Tropospheric boundary layer ozone is regularly measured at ground stations and sa
Externí odkaz:
https://doaj.org/article/3defa4243c874468a591736d36bd800f
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3729-3742 (2024)
Dry deposition of ozone (O3) to the ocean surface and the ozonolysis of organics in the sea surface microlayer (SSML) are potential sources of volatile organic compounds (VOCs) to the marine atmosphere. We use a gas chromatography system coupled to a
Externí odkaz:
https://doaj.org/article/c184b37122404181ab8c9f8564617687
Autor:
M. P. Vermeuel, G. A. Novak, D. B. Kilgour, M. S. Claflin, B. M. Lerner, A. M. Trowbridge, J. Thom, P. A. Cleary, A. R. Desai, T. H. Bertram
Publikováno v:
Atmospheric Chemistry and Physics, Vol 23, Pp 4123-4148 (2023)
The exchange of trace gases between the biosphere and the atmosphere is an important process that controls both chemical and physical properties of the atmosphere with implications for air quality and climate change. The terrestrial biosphere is a ma
Externí odkaz:
https://doaj.org/article/74af0fb1c84c4b2cb47f9ca6bc24da85
Autor:
R. A. Bergin, M. Harkey, A. Hoffman, R. H. Moore, B. Anderson, A. Beyersdorf, L. Ziemba, L. Thornhill, E. Winstead, T. Holloway, T. H. Bertram
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 15449-15468 (2022)
Heterogeneous reactions occurring at the surface of atmospheric aerosol particles regulate the production and lifetime of a wide array of atmospheric gases. Aerosol surface area plays a critical role in setting the rate of heterogeneous reactions in
Externí odkaz:
https://doaj.org/article/d4ab71bb8d154f97877df5162390dfd2
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 6309-6325 (2022)
Oceanic emissions of dimethyl sulfide (CH3SCH3, DMS) have long been recognized to impact aerosol particle composition and size, the concentration of cloud condensation nuclei (CCN), and Earth's radiation balance. The impact of oceanic emissions of me
Externí odkaz:
https://doaj.org/article/baeabdc1a57f4349ab5479b18adb1055
Autor:
D. B. Kilgour, G. A. Novak, J. S. Sauer, A. N. Moore, J. Dinasquet, S. Amiri, E. B. Franklin, K. Mayer, M. Winter, C. K. Morris, T. Price, F. Malfatti, D. R. Crocker, C. Lee, C. D. Cappa, A. H. Goldstein, K. A. Prather, T. H. Bertram
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 1601-1613 (2022)
The oxidation of dimethyl sulfide (DMS; CH3SCH3), emitted from the surface ocean, contributes to the formation of Aitken mode particles and their growth to cloud condensation nuclei (CCN) sizes in remote marine environments. It is not clear whether o
Externí odkaz:
https://doaj.org/article/8ff3ce5416b34d3e910034f3e3456ac5
Publikováno v:
Atmospheric Measurement Techniques, Vol 13, Pp 1887-1907 (2020)
We report on the development, characterization, and field deployment of a fast-time-response sensor for measuring ozone (O3) and nitrogen dioxide (NO2) concentrations utilizing chemical ionization time-of-flight mass spectrometry (CI-ToFMS) with oxyg
Externí odkaz:
https://doaj.org/article/9bc70a8e3d6b4f2ebf559909ac942212
Autor:
S. D. Forestieri, S. M. Staudt, T. M. Kuborn, K. Faber, C. R. Ruehl, T. H. Bertram, C. D. Cappa
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 10985-11005 (2018)
Surface-active compounds present in aerosols can increase their cloud condensation nuclei (CCN) activation efficiency by reducing the surface tension (σ) in the growing droplets. However, the importance of this effect is poorly constrained by mea
Externí odkaz:
https://doaj.org/article/8877b606c0f74dd68f61daa13a0199b7
Publikováno v:
Atmospheric Measurement Techniques, Vol 11, Pp 3251-3262 (2018)
Benzene cluster cations are a sensitive and selective reagent ion for chemical ionization of select biogenic volatile organic compounds. We have previously reported the sensitivity of a field deployable chemical ionization time-of-flight mass spec
Externí odkaz:
https://doaj.org/article/266f738c1afa4dc8bb71bc8638aa1d31
Autor:
G. Prabhakar, C. L. Parworth, X. Zhang, H. Kim, D. E. Young, A. J. Beyersdorf, L. D. Ziemba, J. B. Nowak, T. H. Bertram, I. C. Faloona, Q. Zhang, C. D. Cappa
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 14747-14770 (2017)
This study discusses an analysis of combined airborne and ground observations of particulate nitrate (NO3−(p)) concentrations made during the wintertime DISCOVER-AQ (Deriving Information on Surface Conditions from COlumn and VERtically resolved
Externí odkaz:
https://doaj.org/article/60c7e671a79b496585a18a4ecfecc934