Zobrazeno 1 - 10
of 81
pro vyhledávání: '"J. D. Crounse"'
Autor:
J. M. Roberts, S. Wang, P. R. Veres, J. A. Neuman, M. A. Robinson, I. Bourgeois, J. Peischl, T. B. Ryerson, C. R. Thompson, H. M. Allen, J. D. Crounse, P. O. Wennberg, S. R. Hall, K. Ullmann, S. Meinardi, I. J. Simpson, D. Blake
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 3421-3443 (2024)
Bromine activation (the production of Br in an elevated oxidation state) promotes ozone destruction and mercury removal in the global troposphere and commonly occurs in both springtime polar boundary layers, often accompanied by nearly complete ozone
Externí odkaz:
https://doaj.org/article/1a37751b59af4b93b1fa5bcd304102b7
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
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
Autor:
P. S. Rickly, H. Guo, P. Campuzano-Jost, J. L. Jimenez, G. M. Wolfe, R. Bennett, I. Bourgeois, J. D. Crounse, J. E. Dibb, J. P. DiGangi, G. S. Diskin, M. Dollner, E. M. Gargulinski, S. R. Hall, H. S. Halliday, T. F. Hanisco, R. A. Hannun, J. Liao, R. Moore, B. A. Nault, J. B. Nowak, J. Peischl, C. E. Robinson, T. Ryerson, K. J. Sanchez, M. Schöberl, A. J. Soja, J. M. St. Clair, K. L. Thornhill, K. Ullmann, P. O. Wennberg, B. Weinzierl, E. B. Wiggins, E. L. Winstead, A. W. Rollins
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 15603-15620 (2022)
Fires emit sufficient sulfur to affect local and regional air quality and climate. This study analyzes SO2 emission factors and variability in smoke plumes from US wildfires and agricultural fires, as well as their relationship to sulfate and hydroxy
Externí odkaz:
https://doaj.org/article/7ba5b6ba51e44b44b7fc29e6935db232
Autor:
G. M. Wolfe, T. F. Hanisco, H. L. Arkinson, D. R. Blake, A. Wisthaler, T. Mikoviny, T. B. Ryerson, I. Pollack, J. Peischl, P. O. Wennberg, J. D. Crounse, J. M. St. Clair, A. Teng, L. G. Huey, X. Liu, A. Fried, P. Weibring, D. Richter, J. Walega, S. R. Hall, K. Ullmann, J. L. Jimenez, P. Campuzano-Jost, T. P. Bui, G. Diskin, J. R. Podolske, G. Sachse, R. C. Cohen
Publikováno v:
Atmospheric Chemistry and Physics, Vol 22, Pp 4253-4275 (2022)
Large wildfires influence regional atmospheric composition, but chemical complexity challenges model predictions of downwind impacts. Here, we elucidate key connections within gas-phase photochemistry and assess novel chemical processes via a case st
Externí odkaz:
https://doaj.org/article/95f8fd27ad024801a80c8f64f943c0b0
Autor:
D. Wei, H. D. Alwe, D. B. Millet, B. Bottorff, M. Lew, P. S. Stevens, J. D. Shutter, J. L. Cox, F. N. Keutsch, Q. Shi, S. C. Kavassalis, J. G. Murphy, K. T. Vasquez, H. M. Allen, E. Praske, J. D. Crounse, P. O. Wennberg, P. B. Shepson, A. A. T. Bui, H. W. Wallace, R. J. Griffin, N. W. May, M. Connor, J. H. Slade, K. A. Pratt, E. C. Wood, M. Rollings, B. L. Deming, D. C. Anderson, A. L. Steiner
Publikováno v:
Geoscientific Model Development, Vol 14, Pp 6309-6329 (2021)
The FORCAsT (FORest Canopy Atmosphere Transfer) model version 1.0 is updated to FORCAsT 2.0 by implementing five major changes, including (1) a change to the operator splitting, separating chemistry from emission and dry deposition, which reduces the
Externí odkaz:
https://doaj.org/article/7ef1e45541fe4cd98818e53c0ab3fff4
Publikováno v:
Atmospheric Measurement Techniques, Vol 14, Pp 2429-2439 (2021)
This work describes key improvements made to the in situ laser-induced fluorescence instrument for measuring sulfur dioxide (SO2) that was originally described by Rollins et al. (2016). Here, we report measurements of the SO2 fluorescence emission sp
Externí odkaz:
https://doaj.org/article/665d9b3e05f74b6b9aa8a51acf361b30
Autor:
K. R. Travis, C. L. Heald, H. M. Allen, E. C. Apel, S. R. Arnold, D. R. Blake, W. H. Brune, X. Chen, R. Commane, J. D. Crounse, B. C. Daube, G. S. Diskin, J. W. Elkins, M. J. Evans, S. R. Hall, E. J. Hintsa, R. S. Hornbrook, P. S. Kasibhatla, M. J. Kim, G. Luo, K. McKain, D. B. Millet, F. L. Moore, J. Peischl, T. B. Ryerson, T. Sherwen, A. B. Thames, K. Ullmann, X. Wang, P. O. Wennberg, G. M. Wolfe, F. Yu
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 7753-7781 (2020)
The global oxidation capacity, defined as the tropospheric mean concentration of the hydroxyl radical (OH), controls the lifetime of reactive trace gases in the atmosphere such as methane and carbon monoxide (CO). Models tend to underestimate the met
Externí odkaz:
https://doaj.org/article/d481fda9e1204e94ad9316691357c891
Autor:
A. B. Thames, W. H. Brune, D. O. Miller, H. M. Allen, E. C. Apel, D. R. Blake, T. P. Bui, R. Commane, J. D. Crounse, B. C. Daube, G. S. Diskin, J. P. DiGangi, J. W. Elkins, S. R. Hall, T. F. Hanisco, R. A. Hannun, E. Hintsa, R. S. Hornbrook, M. J. Kim, K. McKain, F. L. Moore, J. M. Nicely, J. Peischl, T. B. Ryerson, J. M. St. Clair, C. Sweeney, A. Teng, C. R. Thompson, K. Ullmann, P. O. Wennberg, G. M. Wolfe
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 4013-4029 (2020)
The hydroxyl radical (OH) reacts with thousands of chemical species in the atmosphere, initiating their removal and the chemical reaction sequences that produce ozone, secondary aerosols, and gas-phase acids. OH reactivity, which is the inverse of OH
Externí odkaz:
https://doaj.org/article/c7b39ea8c6ad442ab137ec45a9f1a1a3
Autor:
X. Chen, D. B. Millet, H. B. Singh, A. Wisthaler, E. C. Apel, E. L. Atlas, D. R. Blake, I. Bourgeois, S. S. Brown, J. D. Crounse, J. A. de Gouw, F. M. Flocke, A. Fried, B. G. Heikes, R. S. Hornbrook, T. Mikoviny, K.-E. Min, M. Müller, J. A. Neuman, D. W. O'Sullivan, J. Peischl, G. G. Pfister, D. Richter, J. M. Roberts, T. B. Ryerson, S. R. Shertz, C. R. Thompson, V. Treadaway, P. R. Veres, J. Walega, C. Warneke, R. A. Washenfelder, P. Weibring, B. Yuan
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 9097-9123 (2019)
We apply a high-resolution chemical transport model (GEOS-Chem CTM) with updated treatment of volatile organic compounds (VOCs) and a comprehensive suite of airborne datasets over North America to (i) characterize the VOC budget and (ii) test the abi
Externí odkaz:
https://doaj.org/article/92ebc82aebd14abc997b4b33ab4695fc