Titlebook: METROMEX; A Review and Summary Stanley A. Changnon Book 1981 American Meteorological Society 1981 Boundary layer processes.Urban meteorolog

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Surface Weather Conditions, of the rainfall distribution was independent of the rainfall amount, it suggests repeated enhancement of precipitation within storms moving across the urban area..The surface winds were perturbed as revealed by the unique signature of wind speed cross-sections showing increases then decreases acros

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Cloud Characteristics,nwind increase of the cloud condensation nuclei (CCN) concentration was 94% measured at 1% supersaturation in a thermal diffusion counter. Measurements of the cloud droplet size distribution in small cumulus and stratus clouds showed narrower distributions of sizes with greater number concentrations

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Urban Precipitation Processes,ds, on average, reach greater maximum heights, last longer, and are more likely to merge with other clouds..The frequency distribution of heights of the tallest echo in the non-urban area, at each half-hour, was found to be bimodal with peak frequencies near 6 and 12 km and a frequency minimum near

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Atmospheric Chemistry and Source-Receptor Relationships,ch obstensibly was caused primarily by a combination of coagulation and dilution mechanisms. The St. Louis area was also a general source of CCN during all seasons of the year. In contrast, the city seemed to act as a sink or “deactivator” for ice-formation nuclei, at least during winter months. Imp

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