MM5 simulations of a SCOS97-NARSTO episode

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Author
Miller, D.
Boucouvala, D.
Bornstein, R.
Wilkinson, J.
Date
2003Metadata
Show full item recordAbstract
MM5 simulations of the 4–7 August SCOS97-NARSTO ozone episode in the SoCAB showed that a relatively rare
easterly upper-level background flow influenced surface wind flow directions at in-land sites. An inland-moving surface
convergence zone resulted where the offshore background flow met an inland moving westerly (sea breeze plus thermal
upslope) onshore flow. Maximum inland penetration of the zone was to the San Gabriel Mountains, where it produced
peak observed ozone concentrations. MM5 reproduced the main qualitative features of the evolution of the diurnal sea
breeze cycle, as it reproduced the opposing easterly flow, inland movement of the sea breeze front, and retreat of the
land breeze front. The accuracy of predicted surface winds and temperatures were improved by modifications of MM5
and/or its input parameters, e.g., by use of the PSU MBLI scheme, analysis nudging with NCAR/NCEP model output,
accurate specification of deep-soil temperature, observational nudging with SCOS97-NARSTO surface and upper level
winds and temperatures, and use of updated urban land-use patterns.
Description
The article of record as published may be found at http://dx.doi.org/10.1016/S1352-2310(03)00384-4
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This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.Collections
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