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The effect of the sea breeze circulation on surface ozone levels at Wallops Island, VirginiaSurface measurements of windspeed, direction, and ozone concentration collected at Wallops Island, Virginia, during the summers of 1977 and 1978 are analyzed to study the effects of the dominant mesoscale sea breeze circulation on the local photochemical oxidant levels. A bimodality in the atmospheric dynamics is linked to systematic variations in ozone concentration. It is concluded that during certain phases of the two circulation modes, increased wind speed reduces the resistance of the earth's surface to the deposition of ozone, and decreased ozone concentration levels result. For other phases, light winds occur, signifying high resistance to deposition and high ozone levels. This modulation by the local dynamics is a major impediment for pollutant studies in coastal environments, especially those centering on transport, because it tends to mask other processes that may be occurring.
Document ID
19800037288
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Parsons, C. L.
(NASA Wallops Flight Center Wallops Island, VA, United States)
Williams, M. E.
(NASA Wallops Flight Center Wallops Island, Va., United States)
Date Acquired
August 10, 2013
Publication Date
December 20, 1979
Publication Information
Publication: Journal of Geophysical Research
Volume: 84
Subject Category
Geophysics
Accession Number
80A21458
Distribution Limits
Public
Copyright
Other

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