Preprints
https://doi.org/10.5194/acp-2021-690
https://doi.org/10.5194/acp-2021-690

  23 Sep 2021

23 Sep 2021

Review status: this preprint is currently under review for the journal ACP.

The Fires, Asian, and Stratospheric Transport-Las Vegas Ozone Study (FAST-LVOS)

Andrew O. Langford1, Christoph J. Senff1,2, Raul J. Alvarez II1, Ken C. Aikin1,2, Sunil Baidar1,2, Timothy A. Bonin1,2,a, W. Alan Brewer1, Jerome Brioude3, Steven S. Brown1,4, Joel D. Burley5, Dani J. Caputi6, Stephen A. Conley7, Patrick D. Cullis2,8, Zachary C. J. Decker1,2, Stéphanie Evan3, Guillaume Kirgis1,2,b, Meiyun Lin9,10, Mariusz Pagowski2,11, Jeff Peischl1,2, Irina Petropavlovskikh2,8, R. Bradley Pierce12, Thomas B. Ryerson1,7, Scott P. Sandberg1, Chance W. Sterling2,8,c, Ann W. Weickmann1,2, and Li Zhang9,10,d Andrew O. Langford et al.
  • 1NOAA Chemical Sciences Laboratory, Boulder, CO, USA
  • 2Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
  • 3Laboratoire de l'Atmosphere et des Cyclones (LACy), UMR 8105, CNRS, Université de La Réunion, Météo-France, Saint- Denis, La Reunion, France.
  • 4Department of Chemistry, University of Colorado, Boulder, CO, USA
  • 5Department of Chemistry, St. Mary's College of California, Moraga, CA, USA
  • 6Department of Land, Air, and Water Resources, University of California, Davis, CA, USA
  • 7Scientific Aviation, Inc., Boulder, Colorado, USA
  • 8NOAA Global Monitoring Laboratory, Boulder, CO, USA.
  • 9Program in Atmospheric and Oceanic Sciences, Princeton University, NJ, USA.
  • 10NOAA Geophysical Fluid Dynamics Laboratory, Princeton, NJ, USA
  • 11NOAA Global Systems Laboratory, Boulder, CO, USA
  • 12NOAA/NESDIS Center for Satellite Applications and Research, Cooperative Institute for Meteorological Satellite Studies, Madison, WI, USA
  • aNow at: MIT Lincoln Laboratory, Lexington MA, USA
  • bNow at: 2210 Kirby Ave, Chattanooga, TN, USA
  • cNow at: C&D Technologies Inc., Philadelphia, PA, USA
  • dNow at: Department of Meteorology and Atmospheric Science, The Pennsylvania State University, University Park, PA, USA

Abstract. The Fires, Asian, and Stratospheric Transport-Las Vegas Ozone Study (FAST-LVOS) was conducted in May and June of 2017 to study the transport of ozone (O3) to Clark County, Nevada, a marginal non-attainment area in the Southwestern U.S. (SWUS). This 6-week (20 May–30 June 2017) field campaign used lidar, ozonesonde, aircraft, and in-situ measurements in conjunction with a variety of models to characterize the distribution of O3 and related species above southern Nevada and neighbouring California, and to probe the influence of stratospheric intrusions, wildfires, and local, regional, and Asian pollution on surface O3 concentrations in Las Vegas and the surrounding area. In this paper, we describe the FAST-LVOS campaign and present case studies illustrating the influence of different transport processes on background O3 and air quality attainment in the SWUS. The measurements found elevated O3 layers above Las Vegas on more than 75 % (35 of 45) of the sample days, and show that entrainment of these layers contributed to mean 8-h average background O3 concentrations of 50–55 parts-per-billion by volume (ppbv) across southern Nevada. These background concentrations constitute 70–80 % of the current U.S. National Ambient Air Quality Standard (NAAQS) of 70 ppbv, and illustrate some of the challenges facing air quality managers tasked with O3 attainment in the SWUS during late spring and early summer. The companion paper by Zhang et al. (2020) describes the use of the AM4 and GEOS-Chem global models to estimate the impacts of transported O3 on surface air quality in the Southwestern U.S. and Intermountain West during the FAST-LVOS campaign.

Andrew O. Langford et al.

Status: open (until 17 Nov 2021)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

Andrew O. Langford et al.

Andrew O. Langford et al.

Viewed

Total article views: 316 (including HTML, PDF, and XML)
HTML PDF XML Total Supplement BibTeX EndNote
242 70 4 316 17 2 3
  • HTML: 242
  • PDF: 70
  • XML: 4
  • Total: 316
  • Supplement: 17
  • BibTeX: 2
  • EndNote: 3
Views and downloads (calculated since 23 Sep 2021)
Cumulative views and downloads (calculated since 23 Sep 2021)

Viewed (geographical distribution)

Total article views: 309 (including HTML, PDF, and XML) Thereof 309 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Latest update: 22 Oct 2021
Download
Short summary
The Fires, Asian, and Stratospheric Transport-Las Vegas Ozone Study (FAST-LVOS) combined lidar, aircraft, and in-situ measurements with global models to investigate the contributions of stratospheric intrusions, regional and Asian pollution, and wildfires on background ozone in the Southwestern U.S. during May and June. The study demonstrated that these processes contributed to background ozone levels that exceeded 70% of the U.S. National Ambient Air Quality Standard during the 6-week campaign.
Altmetrics