Zobrazeno 1 - 8
of 8
pro vyhledávání: '"B. Pollack"'
Autor:
Christopher P. Loughner, Chelsea R. Thompson, Ilana B. Pollack, Jeff Peischl, Wayne M. Angevine, Alice M. Crawford
Publikováno v:
Atmospheric Chemistry and Physics, Vol 20, Pp 11855-11868 (2020)
Air pollutant emissions estimates by top-down methods are subject to a variety of errors and uncertainties. This work uses a known source, a coal-fired power plant, to explore those errors. The known emissions amount and location remove two major typ
Autor:
Juliane L. Fry, William P. Dubé, Ilana B. Pollack, Thomas B. Ryerson, Jose L. Jimenez, Jessica B. Gilman, Pedro Campuzano-Jost, Joost A. de Gouw, Jin Liao, Steven S. Brown, Ann M. Middlebrook, Peter Edwards, Douglas A. Day, André Welti, Carsten Warneke, Brian M. Lerner, Hannah M. Allen, Charles A. Brock, Martin Graus
Publikováno v:
Atmospheric Chemistry and Physics. 18:11663-11682
Nighttime reaction of nitrate radicals (NO3) with biogenic volatile organic compounds (BVOC) has been proposed as a potentially important but also highly uncertain source of secondary organic aerosol (SOA). The southeastern United States has both hig
Autor:
J. Li, J. Mao, A. M. Fiore, R. C. Cohen, J. D. Crounse, A. P. Teng, P. O. Wennberg, B. H. Lee, F. D. Lopez-Hilfiker, J. A. Thornton, J. Peischl, I. B. Pollack, T. B. Ryerson, P. Veres, J. M. Roberts, J. A. Neuman, J. B. Nowak, G. M. Wolfe, T. F. Hanisco, A. Fried, H. B. Singh, J. Dibb, F. Paulot, L. W. Horowitz
Publikováno v:
Atmospheric Chemistry and Physics, Vol 18, Pp 2341-2361 (2018)
Widespread efforts to abate ozone (O3) smog have significantly reduced emissions of nitrogen oxides (NOx) over the past 2 decades in the Southeast US, a place heavily influenced by both anthropogenic and biogenic emissions. How reactive nitrogen spec
Autor:
J. Lindaas, D. K. Farmer, I. B. Pollack, A. Abeleira, F. Flocke, R. Roscioli, S. Herndon, E. V. Fischer
Publikováno v:
Atmospheric Chemistry and Physics, Vol 17, Pp 10691-10707 (2017)
The relative importance of wildfire smoke for air quality over the western US is expected to increase as the climate warms and anthropogenic emissions decline. We report on in situ measurements of ozone (O3), a suite of volatile organic compounds (VO
Autor:
M. R. Marvin, Frank N. Keutsch, Thomas F. Hanisco, Glenn M. Wolfe, J. Kaiser, Jessica B. Gilman, Patrick R. Veres, Martin Graus, Ilana B. Pollack, Jingqiu Mao, F. Lopez-Hilifiker, Ben H. Lee, Joel A. Thornton, Carsten Warneke, J. A. de Gouw, Courtney D. Hatch, Larry W. Horowitz, J. M. Roberts, Jeff Peischl, Brian M. Lerner, John S. Holloway, T. B. Ryerson
Publikováno v:
Atmospheric Chemistry and Physics. 16:2597-2610
The chemical link between isoprene and formaldehyde (HCHO) is a strong, nonlinear function of NOx (i.e., NO + NO2). This relationship is a linchpin for top-down isoprene emission inventory verification from orbital HCHO column observations. It is als
Reassessing the ratio of glyoxal to formaldehyde as an indicator of hydrocarbon precursor speciation
Autor:
Kyung-Eun Min, J. Degouw, J. Kaiser, T. B. Ryerson, Jeff Peischl, Frank N. Keutsch, Thomas F. Hanisco, Carsten Warneke, C. Chan Miller, John S. Holloway, Glenn M. Wolfe, Steven S. Brown, Ilana B. Pollack, Daniel J. Jacob, Rebecca A. Washenfelder, Martin Graus
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 13, Pp 7571-7583 (2015)
The yield of formaldehyde (HCHO) and glyoxal (CHOCHO) from oxidation of volatile organic compounds (VOCs) depends on precursor VOC structure and the concentration of NOx (NOx = NO + NO2). Previous work has proposed that the ratio of CHOCHO to HCHO (R
Autor:
E.-Y. Hsie, Wayne M. Angevine, S. Evan, J. A. Neuman, G. W. Santoni, T. B. Ryerson, Tomohiro Oda, J. M. Roberts, Jeff Peischl, Ilana B. Pollack, S. C. Wofsy, Si-Wan Kim, Steven S. Brown, Gregory J. Frost, Stuart A. McKeen, Ravan Ahmadov, John B. Nowak, Michael Trainer, Jerome Brioude, John S. Holloway
Publikováno v:
Atmospheric Chemistry and Physics. 13:3661-3677
We present top-down estimates of anthropogenic CO, NOx and CO2 surface fluxes at mesoscale using a Lagrangian model in combination with three different WRF model configurations, driven by data from aircraft flights during the CALNEX campaign in south
Autor:
Jennifer A. Logan, Eric C. Apel, Michael J. Cubison, Stephanie A. Vay, Paul J. Wooldridge, Denise D. Montzka, Tomas Mikoviny, Matthew J. Alvarado, Ronald C. Cohen, Eleanor C. Browne, Frank Flocke, Kyung-Eun Min, Paul O. Wennberg, W. R. Sessions, C. Carouge, G. Huey, Robert M. Yantosca, Jason M. St. Clair, P. Le Sager, A. Case-Hanks, Glenn S. Diskin, Jin Liao, Armin Wisthaler, Henry E. Fuelberg, Andreas Kürten, D. L. Harrigan, D. J. Knapp, Daniel D. Riemer, Anne E. Perring, Andrew J. Weinheimer, Jingqiu Mao, Ilana B. Pollack, John D. Crounse, Donald R. Blake, G. W. Sachse, Jose L. Jimenez
Publikováno v:
Atmospheric Chemistry and Physics, Vol 10, Iss 20, Pp 9739-9760 (2010)
Alvarado, M. J; Logan, J. A; Mao, J.; Apel, E.; Riemer, D.; Blake, D.; et al.(2010). Nitrogen oxides and PAN in plumes from boreal fires during ARCTAS-B and their impact on ozone: an integrated analysis of aircraft and satellite observations. Atmospheric Chemistry and Physics, 10(20), 9739-9760. doi: 10.5194/acp-10-9739-2010. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/54d7d49f
Alvarado, M. J; Logan, J. A; Mao, J.; Apel, E.; Riemer, D.; Blake, D.; et al.(2010). Nitrogen oxides and PAN in plumes from boreal fires during ARCTAS-B and their impact on ozone: an integrated analysis of aircraft and satellite observations. Atmospheric Chemistry and Physics, 10(20), 9739-9760. doi: 10.5194/acp-10-9739-2010. UC Irvine: Retrieved from: http://www.escholarship.org/uc/item/54d7d49f
We determine enhancement ratios for NOx, PAN, and other NOy species from boreal biomass burning using aircraft data obtained during the ARCTAS-B campaign and examine the impact of these emissions on tropospheric ozone in the Arctic. We find an initia