The impact of Los Angeles Basin pollution and stratospheric intrusions on the surrounding San Gabriel Mountains as seen by surface measurements, lidar, and numerical models

Chouza, Fernando; Leblanc, Thierry; Brewer, Mark; Wang, Patrick; Piazzolla, Sabino; Pfister, Gabriele; Kumar, Rajesh; Drews, Carl; Tilmes, Simone; Emmons, Louisa; Johnson, Matthew

doi:https://doi.org/10.5194/acp-21-6129-2021

Articles | Volume 21, issue 8

https://doi.org/10.5194/acp-21-6129-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-21-6129-2021

© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 8

Research article

|

23 Apr 2021

Research article |

| 23 Apr 2021

The impact of Los Angeles Basin pollution and stratospheric intrusions on the surrounding San Gabriel Mountains as seen by surface measurements, lidar, and numerical models

Fernando Chouza, Thierry Leblanc, Mark Brewer, Patrick Wang, Sabino Piazzolla, Gabriele Pfister, Rajesh Kumar, Carl Drews, Simone Tilmes, Louisa Emmons, and Matthew Johnson

Data sets

TOLNet database TOLNet Science Team https://doi.org/10.5067/LIDAR/OZONE/TOLNET

WRF-Chem forecast NCAR ACOM team https://www.acom.ucar.edu/firex-aq/FIREX-AQ/Evaluation/TOLNet/Wrightwood_CA/

WACCM forecast NCAR ACOM team https://www.acom.ucar.edu/waccm/download.shtml

Ozonesonde data archive NOAA ftp://aftp.cmdl.noaa.gov/data/ozwv/Ozonesonde/

Short summary

The tropospheric ozone lidar at the JPL Table Mountain Facility (TMF) was used to investigate the impact of Los Angeles (LA) Basin pollution transport and stratospheric intrusions in the planetary boundary layer on the San Gabriel Mountains. The results of this study indicate a dominant role of the LA Basin pollution on days when high ozone levels were observed at TMF (March–October period).