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Akademický článek

Contribution of cooking emissions to the urban volatile organic compounds in Las Vegas, NV

Autor: M. M. Coggon, C. E. Stockwell, L. Xu, J. Peischl, J. B. Gilman, A. Lamplugh, H. J. Bowman, K. Aikin, C. Harkins, Q. Zhu, R. H. Schwantes, J. He, M. Li, K. Seltzer, B. McDonald, C. Warneke

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 4289-4304 (2024)

Cooking is a source of volatile organic compounds (VOCs), which degrade air quality. Cooking VOCs have been investigated in laboratory and indoor studies, but the contribution of cooking to the spatial and temporal variability in urban VOCs is uncert

Externí odkaz: https://doaj.org/article/bbdafa641a684b73a72245ac10fe1272

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Akademický článek

Identifying and correcting interferences to PTR-ToF-MS measurements of isoprene and other urban volatile organic compounds

Publikováno v: Atmospheric Measurement Techniques, Vol 17, Pp 801-825 (2024)

Proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS) is a technique commonly used to measure ambient volatile organic compounds (VOCs) in urban, rural, and remote environments. PTR-ToF-MS is known to produce artifacts from ion fragm

Externí odkaz: https://doaj.org/article/4b5ad57cbb0842e697df0b3455c1d83d

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Akademický článek

Parameterizations of US wildfire and prescribed fire emission ratios and emission factors based on FIREX-AQ aircraft measurements

Autor: G. I. Gkatzelis, M. M. Coggon, C. E. Stockwell, R. S. Hornbrook, H. Allen, E. C. Apel, M. M. Bela, D. R. Blake, I. Bourgeois, S. S. Brown, P. Campuzano-Jost, J. M. St. Clair, J. H. Crawford, J. D. Crounse, D. A. Day, J. P. DiGangi, G. S. Diskin, A. Fried, J. B. Gilman, H. Guo, J. W. Hair, H. S. Halliday, T. F. Hanisco, R. Hannun, A. Hills, L. G. Huey, J. L. Jimenez, J. M. Katich, A. Lamplugh, Y. R. Lee, J. Liao, J. Lindaas, S. A. McKeen, T. Mikoviny, B. A. Nault, J. A. Neuman, J. B. Nowak, D. Pagonis, J. Peischl, A. E. Perring, F. Piel, P. S. Rickly, M. A. Robinson, A. W. Rollins, T. B. Ryerson, M. K. Schueneman, R. H. Schwantes, J. P. Schwarz, K. Sekimoto, V. Selimovic, T. Shingler, D. J. Tanner, L. Tomsche, K. T. Vasquez, P. R. Veres, R. Washenfelder, P. Weibring, P. O. Wennberg, A. Wisthaler, G. M. Wolfe, C. C. Womack, L. Xu, K. Ball, R. J. Yokelson, C. Warneke

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 929-956 (2024)

Extensive airborne measurements of non-methane organic gases (NMOGs), methane, nitrogen oxides, reduced nitrogen species, and aerosol emissions from US wild and prescribed fires were conducted during the 2019 NOAA/NASA Fire Influence on Regional to G

Externí odkaz: https://doaj.org/article/61e617bdf6914661ade67d9b6c2b36f6

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Akademický článek

Chemical ionization mass spectrometry utilizing ammonium ions (NH4+ CIMS) for measurements of organic compounds in the atmosphere

Autor: L. Xu, M. M. Coggon, C. E. Stockwell, J. B. Gilman, M. A. Robinson, M. Breitenlechner, A. Lamplugh, J. D. Crounse, P. O. Wennberg, J. A. Neuman, G. A. Novak, P. R. Veres, S. S. Brown, C. Warneke

Publikováno v: Atmospheric Measurement Techniques, Vol 15, Pp 7353-7373 (2022)

We describe the characterization and field deployment of chemical ionization mass spectrometry (CIMS) using a recently developed focusing ion-molecule reactor (FIMR) and ammonium–water cluster (NH4+⋅H2O) as the reagent ion (denoted as NH4+ CIMS).

Externí odkaz: https://doaj.org/article/e417a61b25d446cb8c45f51e1847a48d

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Akademický článek

Composition and reactivity of volatile organic compounds in the South Coast Air Basin and San Joaquin Valley of California

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 10937-10954 (2022)

Comprehensive aircraft measurements of volatile organic compounds (VOCs) covering the South Coast Air Basin (SoCAB) and San Joaquin Valley (SJV) of California were obtained in the summer of 2019. Combined with the CO, CH4, and NOx data, the total cal

Externí odkaz: https://doaj.org/article/766158a2899a432dbec732b2b5ea0b75

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Akademický článek

Comparison of airborne measurements of NO, NO2, HONO, NOy, and CO during FIREX-AQ

Publikováno v: Atmospheric Measurement Techniques, Vol 15, Pp 4901-4930 (2022)

We present a comparison of fast-response instruments installed onboard the NASA DC-8 aircraft that measured nitrogen oxides (NO and NO2), nitrous acid (HONO), total reactive odd nitrogen (measured both as the total (NOy) and from the sum of individua

Externí odkaz: https://doaj.org/article/9188f1ee9ceb43db8827fc00b37f5682

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Akademický článek

Formaldehyde evolution in US wildfire plumes during the Fire Influence on Regional to Global Environments and Air Quality experiment (FIREX-AQ)

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 18319-18331 (2021)

Formaldehyde (HCHO) is one of the most abundant non-methane volatile organic compounds (VOCs) emitted by fires. HCHO also undergoes chemical production and loss as a fire plume ages, and it can be an important oxidant precursor. In this study, we dis

Externí odkaz: https://doaj.org/article/f0100f93a68040c580d00c68c21934e1

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An Euler system for characters over an imaginary biquadratic field

Autor: Lamplugh, Jack

Given a pair of modular forms with complex multiplication by distinct imaginary quadratic fields, the four dimensional Galois representation associated to their Rankin--Selberg convolution is induced from a character over an imaginary biquadratic fie

Externí odkaz: http://arxiv.org/abs/1611.05702

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