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Akademický článek

Impact of improved representation of volatile organic compound emissions and production of NOx reservoirs on modeled urban ozone production

Autor: K. R. Travis, B. A. Nault, J. H. Crawford, K. H. Bates, D. R. Blake, R. C. Cohen, A. Fried, S. R. Hall, L. G. Huey, Y. R. Lee, S. Meinardi, K.-E. Min, I. J. Simpson, K. Ullman

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 9555-9572 (2024)

The fraction of urban volatile organic compound (VOC) emissions attributable to fossil fuel combustion has been declining in many parts of the world, resulting in a need to better constrain other anthropogenic sources of these emissions. During the N

Externí odkaz: https://doaj.org/article/6a12fb71882c442abe3403f04f16a743

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Akademický článek

Using observed urban NOx sinks to constrain VOC reactivity and the ozone and radical budget in the Seoul Metropolitan Area

Autor: B. A. Nault, K. R. Travis, J. H. Crawford, D. R. Blake, P. Campuzano-Jost, R. C. Cohen, J. P. DiGangi, G. S. Diskin, S. R. Hall, L. G. Huey, J. L. Jimenez, K.-E. Kim, Y. R. Lee, I. J. Simpson, K. Ullmann, A. Wisthaler

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 9573-9595 (2024)

Ozone (O3) is an important secondary pollutant that impacts air quality and human health. Eastern Asia has high regional O3 background due to the numerous sources and increasing and rapid industrial growth, which also impacts the Seoul Metropolitan A

Externí odkaz: https://doaj.org/article/71c4a6581bee408995cfb5dc308958d5

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Akademický článek

Sensitivity of the WRF-Chem v4.4 simulations of ozone and formaldehyde and their precursors to multiple bottom-up emission inventories over East Asia during the KORUS-AQ 2016 field campaign

Autor: K.-M. Kim, S.-W. Kim, S. Seo, D. R. Blake, S. Cho, J. H. Crawford, L. K. Emmons, A. Fried, J. R. Herman, J. Hong, J. Jung, G. G. Pfister, A. J. Weinheimer, J.-H. Woo, Q. Zhang

Publikováno v: Geoscientific Model Development, Vol 17, Pp 1931-1955 (2024)

In this study, the WRF-Chem v4.4 model was utilized to evaluate the sensitivity of O3 simulations with three bottom-up emission inventories (EDGAR-HTAP v2 and v3 and KORUS v5) using surface and aircraft data in East Asia during the Korea-United State

Externí odkaz: https://doaj.org/article/8c82bceeef7046ba968d8a93d4cd828d

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Akademický článek

Observationally constrained analysis of sulfur cycle in the marine atmosphere with NASA ATom measurements and AeroCom model simulations

Publikováno v: Atmospheric Chemistry and Physics, Vol 24, Pp 1717-1741 (2024)

The atmospheric sulfur cycle plays a key role in air quality, climate, and ecosystems, such as pollution, radiative forcing, new particle formation, and acid rain. In this study, we compare the spatially and temporally resolved measurements from the

Externí odkaz: https://doaj.org/article/662250ce9864410ab1d3053fd0cfc947

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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

Characterization of errors in satellite-based HCHO ∕ NO2 tropospheric column ratios with respect to chemistry, column-to-PBL translation, spatial representation, and retrieval uncertainties

Publikováno v: Atmospheric Chemistry and Physics, Vol 23, Pp 1963-1986 (2023)

The availability of formaldehyde (HCHO) (a proxy for volatile organic compound reactivity) and nitrogen dioxide (NO2) (a proxy for nitrogen oxides) tropospheric columns from ultraviolet–visible (UV–Vis) satellites has motivated many to use their

Externí odkaz: https://doaj.org/article/a82c4cefd87b4605a1311ef9527f0c73

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Akademický článek

Global seasonal distribution of CH2Br2 and CHBr3 in the upper troposphere and lower stratosphere

Autor: M. Jesswein, R. P. Fernandez, L. Berná, A. Saiz-Lopez, J.-U. Grooß, R. Hossaini, E. C. Apel, R. S. Hornbrook, E. L. Atlas, D. R. Blake, S. Montzka, T. Keber, T. Schuck, T. Wagenhäuser, A. Engel

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 15049-15070 (2022)

Bromine released from the decomposition of short-lived brominated source gases contributes as a sink of ozone in the lower stratosphere. The two major contributors are CH2Br2 and CHBr3. In this study, we investigate the global seasonal distribution o

Externí odkaz: https://doaj.org/article/dc488a044f654d29b5b8057141b708fa

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Akademický článek

Tropical peat fire emissions: 2019 field measurements in Sumatra and Borneo and synthesis with previous studies

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 10173-10194 (2022)

Peat fires in Southeast Asia are a major source of trace gases and particles to the regional-global atmosphere that influence atmospheric chemistry, climate, and air quality. During the November 2015 record-high Ocean Niño Index (ONI, 2.6) our mobil

Externí odkaz: https://doaj.org/article/083807381c4a40729d8e418b09a3cc3f

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Akademický článek

Source and variability of formaldehyde (HCHO) at northern high latitudes: an integrated satellite, aircraft, and model study

Autor: T. Zhao, J. Mao, W. R. Simpson, I. De Smedt, L. Zhu, T. F. Hanisco, G. M. Wolfe, J. M. St. Clair, G. González Abad, C. R. Nowlan, B. Barletta, S. Meinardi, D. R. Blake, E. C. Apel, R. S. Hornbrook

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 7163-7178 (2022)

Here we use satellite observations of formaldehyde (HCHO) vertical column densities (VCD) from the TROPOspheric Monitoring Instrument (TROPOMI), aircraft measurements, combined with a nested regional chemical transport model (GEOS-Chem at 0.5×0.625�

Externí odkaz: https://doaj.org/article/a9dabe1bb4e246918230534460ba7fb0

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