Intercomparison of lidar, aircraft, and surface ozone measurements in the San Joaquin Valley during the California Baseline Ozone Transport Study (CABOTS)

A. O. Langford; R. J. Alvarez II; G. Kirgis; G. Kirgis; C. J. Senff; C. J. Senff; D. Caputi; S. A. Conley; I. C. Faloona; L. T. Iraci; J. E. Marrero; J. E. Marrero; M. E. McNamara; M. E. McNamara; M. E. McNamara; J.-M. Ryoo; J.-M. Ryoo; E. L. Yates; E. L. Yates

doi:10.5194/amt-12-1889-2019

Atmospheric Measurement Techniques (Mar 2019)

Intercomparison of lidar, aircraft, and surface ozone measurements in the San Joaquin Valley during the California Baseline Ozone Transport Study (CABOTS)

A. O. Langford,
R. J. Alvarez II,
G. Kirgis,
G. Kirgis,
C. J. Senff,
C. J. Senff,
D. Caputi,
S. A. Conley,
I. C. Faloona,
L. T. Iraci,
J. E. Marrero,
J. E. Marrero,
M. E. McNamara,
M. E. McNamara,
M. E. McNamara,
J.-M. Ryoo,
J.-M. Ryoo,
E. L. Yates,
E. L. Yates

Affiliations

A. O. Langford: Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
R. J. Alvarez II: Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
G. Kirgis: Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
G. Kirgis: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
C. J. Senff: Chemical Sciences Division, NOAA Earth System Research Laboratory, Boulder, CO 80305, USA
C. J. Senff: Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309, USA
D. Caputi: Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA
S. A. Conley: Scientific Aviation, Inc., Boulder, CO 80301, USA
I. C. Faloona: Department of Land, Air, and Water Resources, University of California, Davis, CA 95616, USA
L. T. Iraci: Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
J. E. Marrero: Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
J. E. Marrero: now at: Sonoma Technology, Inc., Petaluma, CA 94954, USA
M. E. McNamara: Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
M. E. McNamara: Environmental Science and Policy Department, University of California, Davis, CA 95616, USA
M. E. McNamara: now at: Illingworth & Rodkin, Inc., Petaluma, CA 94954, USA
J.-M. Ryoo: Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
J.-M. Ryoo: now at: Science and Technology Corporation, Moffett Field, CA 94035, USA
E. L. Yates: Atmospheric Science Branch, NASA Ames Research Center, Moffett Field, CA 94035, USA
E. L. Yates: Bay Area Environmental Research Institute, Petaluma, CA 94952, USA

DOI: https://doi.org/10.5194/amt-12-1889-2019
Journal volume & issue: Vol. 12
pp. 1889 – 1904

Abstract

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The California Baseline Ozone Transport Study (CABOTS) was conducted in the late spring and summer of 2016 to investigate the influence of long-range transport and stratospheric intrusions on surface ozone (O3) concentrations in California with emphasis on the San Joaquin Valley (SJV), one of two extreme ozone non-attainment areas in the US. One of the major objectives of CABOTS was to characterize the vertical distribution of O3 and aerosols above the SJV to aid in the identification of elevated transport layers and assess their surface impacts. To this end, the NOAA Earth System Research Laboratory (ESRL) deployed the Tunable Optical Profiler for Aerosol and oZone (TOPAZ) mobile lidar to the Visalia Municipal Airport (36.315∘ N, 119.392∘ E) in the central SJV between 27 May and 7 August 2016. Here we compare the TOPAZ ozone retrievals with co-located in situ surface measurements and nearby regulatory monitors and also with airborne in situ measurements from the University of California at Davis–Scientific Aviation (SciAv) Mooney and NASA Alpha Jet Atmospheric eXperiment (AJAX) research aircraft. Our analysis shows that the lidar and aircraft measurements agree, on average to within 5 ppbv, the sum of their stated uncertainties of 3 and 2 ppbv, respectively.

Published in Atmospheric Measurement Techniques

ISSN: 1867-1381 (Print); 1867-8548 (Online)
Publisher: Copernicus Publications
Country of publisher: Germany
LCC subjects: Technology: Engineering (General). Civil engineering (General): Environmental engineering; Technology: Engineering (General). Civil engineering (General): Earthwork. Foundations
Website: http://www.atmospheric-measurement-techniques.net/home.html

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