MM5 simulations of a SCOS97-NARSTO episode

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Miller_MM5_Simulations_2003.pdf (2.71 MB)
Authors
Miller, D.
Boucouvala, D.
Bornstein, R.
Wilkinson, J.
Subjects
SCOS97-NARSTO
SoCAB
MM5
Meteorological conditions
Advisors
Date of Issue
2003
Date
2003
Publisher
Elsevier Ltd.
Language
Abstract
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.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.1016/S1352-2310(03)00384-4
URI
https://hdl.handle.net/10945/48923
Series/Report No
Department
Meteorology
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
contract No. 97–310 from the California Air Resources Board (CARB)
Funder
contract No. 97–310 from the California Air Resources Board (CARB)
Format
23 p.
Citation
Atmospheric Environment 37 Supplement No. 2 (2003) S95–S117
Distribution Statement
Rights
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.
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