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RECORD NUMBER: 53 OF 180

OLS Field Name OLS Field Data
Main Title Dynamically Induced Meso-Scale Variations of the Urban Mixing Layer Depth.
Author Spangle, Timothy C. ;
CORP Author Wyoming Univ., Laramie. Dept. of Atmospheric Resources.
Year Published 1972
Report Number AR/04; EPA-R-800875;
Stock Number PB-228 390
Additional Subjects Climatology ; Urban areas ; Meteorological data ; Climatic changes ; Weather modification ; Atmospheric circulation ; Atmospheric temperature ; Precipitation(Meteorology) ; Temperature inversions ; Synoptic meteorology ; Missouri ; St. Louis(Missouri) ; Urban heat islands
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NTIS  PB-228 390 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 36p
Abstract The dynamical effects of an urban surface on the airflow above it could be an important factor in meso-scale precipitation patterns. In order to evaluate the dynamical influences of an urban area, local variations in the mixing layer depth over metropolitan St. Louis are investigated. Variations in the height of a temperature inversion capping a deep mixing layer are used to measure the urban effect on the mixing layer depth. Case studies employing aircraft, pilot balloon and radiosonde data collected in Project METROMEX show that the St. Louis urban area produces a doming of the inversion layer over the city during the morning hours on certain summer days. It is concluded from observational and numerical modeling studies that the urban surface influence did not contribute significantly to the formation of the inversion dome but rather that a major influence existed within the upper regions of the mixing river. (Author)
PUB Date Free Form Jul 72,
Category Codes 4B; 55C
NTIS Prices PC A03/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326576879
Origin NTIS
Type CAT