This work discusses issues related to the impact of urbanization on the
microphysical processes of precipitating systems associated with synoptic,
mesoscale, and local scale systems. Among the issues addressed is the impact of
urban heat island (UHI) in São Paulo city center and urban
densification (UD) in theMetropolitan
Area of São Paulo (MASP) on the microphysical, dynamic, and thermodynamic properties and distribution of
precipitation and heavier rainfall from sea-breeze (SB) e cold-front (CF)
combined during their space-time evolutions. For this purpose, it used four
components: classification of hydrometeors with fuzzy logic, calculation of the
raindrop diameters, an estimate of liquid water mass and ice mass from
polarimetric-variables measured with dual-pola- rization X-band meteorological
radar. The results indicated that urban densification (UD) and heat island
(UHI) of the S
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