Details:

Journal Title:
Journal of Geophysical Research: Atmospheres
Personal Author:
Sullivan, J. T. ; McGee, T. J. ; Langford, A. O. ; Alvarez, R. J. ; Senff, C. J. ; ... More +
Sullivan, J. T. ; McGee, T. J. ; Langford, A. O. ; Alvarez, R. J. ; Senff, C. J. ; Reddy, P. J. ; Thompson, A. M. ; Twigg, L. W. ; Sumnicht, G. K. ; Lee, P. ; Weinheimer, A. ; Knote, C. ; Long, R. W. ; Hoff, R. M. Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CSL (Chemical Sciences Laboratory) ; ARL (Air Resources Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; ... More +
OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CSL (Chemical Sciences Laboratory) ; ARL (Air Resources Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CREST (Center for Earth System Sciences and Remote Sensing Technologies and Tech Center at City College of CUNY) Less -
Description:
A high-ozone (O-3) pollution episode was observed on 22 July 2014 during the concurrent Deriving Information on Surface Conditions from Column and Vertically Resolved Observations Relevant to Air Quality (DISCOVER-AQ) and Front Range Air Pollution and Photochemistry Experiment (FRAPPE) campaigns in northern Colorado. Surface O-3 monitors at three regulatory sites exceeded the Environmental Protection Agency (EPA) 2008 National Ambient Air Quality Standard (NAAQS) daily maximum 8h average (MDA8) of 75ppbv. To further characterize the polluted air mass and assess transport throughout the event, measurements are presented from O-3 and wind profilers, O-3-sondes, aircraft, and surface-monitoring sites. Observations indicate that thermally driven upslope flow was established throughout the Colorado Front Range during the pollution episode. As the thermally driven flow persisted throughout the day, O-3 concentrations increased and affected high-elevation Rocky Mountain sites. These observations, coupled with modeling analyses, demonstrate a westerly return flow of polluted air aloft, indicating that the mountain-plains solenoid circulation was established and impacted surface conditions within the Front Range.
Source:
Journal of Geophysical Research-Atmospheres, 121(17), 10377-10390.
DOI:
http://dx.doi.org/10.1002/2016jd025229
Document Type:
Journal Article
Rights Information:
Other
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Submitted
Main Document Checksum:
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urn:sha256:5f65eb63ca8737dbb48223abad68cfeaa285ed1ff99912bfec890911c0fc212e
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