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ISWS Report of Investigation RI-74PDF


Title:Summary Report of Metromex Studies, 1971-1972
Contributor(s):Huff, Floyd, A.
Subject(s):Atmospheric chemistry
cloud physics
inadvertent weather and climate change
severe weather
weather modification
Abstract:Metromex is a large-scale investigation of inadvertent weather modification in an urban area, sited at St. Louis. Analyses to date from 2 years of data collected in the 5-year Metromex field program are summarized in this report. It includes extensive climatological-statistical analyses of rainfall and severe weather events and partial analyses for various atmospheric studies for which data are as yet limited. The 2- year results provide evidence that rain, thunderstorms, and hail maximize at locations 10 to 15. miles downwind of the urban-industrial region. These locations had more storms that were more intense, lasted longer, and produced greater amounts of ram and hail. Results also show that the atmosphere modified by heat and various emissions in the urban area does move up to levels where it can affect clouds and hat the urban-modified atmosphere acts to invigorate convective storms and to increase the efficiency of precipitation events. Data and conclusions in this 2-year report provide a variety of information on urban effects on weather not obtainable in existing literature.
Issue Date:1973
Publisher:Illinois State Water Survey
Series/Report:Report of Investigation (Illinois State Water Survey) RI-074
Genre:Technical Report
Publication Status:published
Peer Reviewed:peer reviewed
Rights Information:Copyright, University of Illinois Board of Trustees. All rights reserved. This document is a product of the Illinois State Water Survey, and has been selected and made available by the Illinois State Water Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended for research and educational use, and proper attribution is requested.
Date Available in IDEALS:2015-05-28

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