Simulating the Weekly Cycle of NO x -VOC-HO x -O 3 Photochemical System in the South Coast of California During CalNex-2010 Campaign

Chenxia Cai, Jeremy Avise, Ajith Kaduwela, John DaMassa, Carsten Warneke, Jessica B. Gilman, William Kuster, Joost de Gouw, Rainer Volkamer, Philip Stevens, Barry Lefer, John S. Holloway, Ilana B. Pollack, Thomas Ryerson, Elliot L Atlas, Donald Blake, Bernhard Rappenglueck, Steven S. Brown, William P. Dube

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

United States Environmental Protection Agency guidance on the use of photochemical models for assessing the efficacy of an emissions control strategy for ozone requires that modeling be used in a relative sense. Consequently, testing a modeling system's ability to predict changes in ozone resulting from emission changes is critical. We evaluate model simulations for precursor species (NO x , CO, and volatile organic compounds [VOCs]), radicals (OH and HO 2 ), a secondary pollutant (O 3 ), and the model response of these compounds to weekend/weekday emission changes during California Nexus study in 2010. The modeling system correctly simulated the broad spatial and temporal variation of NO x and O 3 in California South Coast. Although the model generally underpredicted the daytime mixing ratios of NO 2 at the surface and overpredicted the NO 2 column, the simulated weekend to weekday ratios are consistent with each other and match the observed ratios well. The modeling system exhibited reasonable performance in simulating the VOC compounds with fossil fuel origins but has larger bias in simulating certain species associated with noncombustion sources. The modeling system successfully captured the weekend changes of the enhancement ratios for various VOC species to CO and the relative changes of HO x , which are indicators of faster chemical processing on weekends. This work demonstrates satisfactory model performances for O 3 and most relevant chemical compounds with more robust performance in simulating weekend versus weekday changes. Improved planetary boundary layer height simulations, a better understanding of OH-HO 2 cycling, continued improvement of emissions, especially urban biogenic emissions and emissions of oxygenated VOCs, are important for future model improvement.

Original languageEnglish (US)
Pages (from-to)3532-3555
Number of pages24
JournalJournal of Geophysical Research: Atmospheres
Volume124
Issue number6
DOIs
StatePublished - Mar 27 2019

Fingerprint

Volatile Organic Compounds
volatile organic compounds
coasts
volatile organic compound
Coastal zones
cycles
coast
Ozone
modeling
Carbon Monoxide
ozone
planetary boundary layer
biogenic emission
chemical compounds
fossil fuels
Chemical compounds
chemical compound
Emission control
Environmental Protection Agency
emission control

Keywords

  • hydroxyl and hydroperoxy radicals
  • Nitrogen oxide
  • Ozone
  • South Coast Air Basin
  • Volatile organic compounds
  • Weekend effect

ASJC Scopus subject areas

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences (miscellaneous)
  • Palaeontology

Cite this

Simulating the Weekly Cycle of NO x -VOC-HO x -O 3 Photochemical System in the South Coast of California During CalNex-2010 Campaign . / Cai, Chenxia; Avise, Jeremy; Kaduwela, Ajith; DaMassa, John; Warneke, Carsten; Gilman, Jessica B.; Kuster, William; de Gouw, Joost; Volkamer, Rainer; Stevens, Philip; Lefer, Barry; Holloway, John S.; Pollack, Ilana B.; Ryerson, Thomas; Atlas, Elliot L; Blake, Donald; Rappenglueck, Bernhard; Brown, Steven S.; Dube, William P.

In: Journal of Geophysical Research: Atmospheres, Vol. 124, No. 6, 27.03.2019, p. 3532-3555.

Research output: Contribution to journalArticle

Cai, C, Avise, J, Kaduwela, A, DaMassa, J, Warneke, C, Gilman, JB, Kuster, W, de Gouw, J, Volkamer, R, Stevens, P, Lefer, B, Holloway, JS, Pollack, IB, Ryerson, T, Atlas, EL, Blake, D, Rappenglueck, B, Brown, SS & Dube, WP 2019, ' Simulating the Weekly Cycle of NO x -VOC-HO x -O 3 Photochemical System in the South Coast of California During CalNex-2010 Campaign ', Journal of Geophysical Research: Atmospheres, vol. 124, no. 6, pp. 3532-3555. https://doi.org/10.1029/2018JD029859
Cai, Chenxia ; Avise, Jeremy ; Kaduwela, Ajith ; DaMassa, John ; Warneke, Carsten ; Gilman, Jessica B. ; Kuster, William ; de Gouw, Joost ; Volkamer, Rainer ; Stevens, Philip ; Lefer, Barry ; Holloway, John S. ; Pollack, Ilana B. ; Ryerson, Thomas ; Atlas, Elliot L ; Blake, Donald ; Rappenglueck, Bernhard ; Brown, Steven S. ; Dube, William P. / Simulating the Weekly Cycle of NO x -VOC-HO x -O 3 Photochemical System in the South Coast of California During CalNex-2010 Campaign In: Journal of Geophysical Research: Atmospheres. 2019 ; Vol. 124, No. 6. pp. 3532-3555.
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