Microphysical and Dynamical Climatology of Precipitating Systems Inferred by Weather Radar Polarimetric Measurements in Brazil

• DOI: 10.4236/ojmh.2022.122005
• Publication Date: 2022-04-11T06:12:01Z
• Authors: Augusto José Pere...; Felipe Vemado
• Keywords: Sea breeze; Weather radar; Mesoscale convective system

This work presents the climatology of microphysics and dynamics weather systems in two coastal areas São Paulo Espírito States at high spatial-temporal resolution as measured by dual Doppler radars during summer early fall 2015. Averages respective standard deviations polarimetric variables, namely, reflectivity (Z), differential (ZDR), phase (ϕDP), specific (KDP), copolar correlation coefficient (ρoHV), radial velocity (Vr), spectral width (W) were obtained within a 240-km range on plan position indicator (PPI), constant altitude (CAPPI) vertical cross-sections to analyze overall horizontal precipitation mesoscale circulation prevailing systems, their peculiarities over oceanic, urban rural areas. Overall, raindrops tend be larger Metropolitan area from surface up 6 km indicating more vigorous updrafts caused heat island effect local sea breeze. The microphysical structure is remarkably distinct Area (MASP) where thunderstorms can reach 20-km summertime under breeze effects. On other hand, there dominancy smaller drop sizes though ones observed close coast Santo land-ocean interface influenced low-level jet oceanic-type CCN. Convective cells associated with Easterlies organized Westerlies. results indicate features hydrometeor types characteristics these different boundary-layer conditions agreement previous literature.