R. Hallak
I work with atmospheric numerical models in a mesoscale framework. Convection, thunderstorms, and dynamical, thermodynamical and cloud microphysics process are of special interest in this work. Some synoptic approachs are always included, as well as, surface, soil and PBL phenomena.
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high concentrations of fine particulate matter (PM2.5). Two significant occurrences of long-range transport of aerosols over
the state of Parana in Brazil, which occurred during the periods Aug. 16–18 and Sep. 10–14 of 2016, were studied in order
to characterize the atmospheric synoptic conditions of these events and to estimate their contribution to the air quality
conditions in the northern region of the state. The South American Low Level Jet (SALLJ) was the key meteorological
component used to define the origin of the air mass trajectories over the region. In the first event, the SALLJ lost its
configuration, bringing air masses from the western part of São Paulo (state), while in the second event, the SALLJ formed
over southern Brazil and brought air masses from the northern and central parts of the nation. The significant number of
fires from biomass burning in central Brazil associated with synoptic conditions contributed to the increase in PM2.5
concentrations by approximately 70–87% in the region. The transport of aerosols was a determining factor in PM2.5
exceeding the air quality standard in the region. Therefore, to minimize this problem, it is imperative to control biomass
burning in Brazil.
high concentrations of fine particulate matter (PM2.5). Two significant occurrences of long-range transport of aerosols over
the state of Parana in Brazil, which occurred during the periods Aug. 16–18 and Sep. 10–14 of 2016, were studied in order
to characterize the atmospheric synoptic conditions of these events and to estimate their contribution to the air quality
conditions in the northern region of the state. The South American Low Level Jet (SALLJ) was the key meteorological
component used to define the origin of the air mass trajectories over the region. In the first event, the SALLJ lost its
configuration, bringing air masses from the western part of São Paulo (state), while in the second event, the SALLJ formed
over southern Brazil and brought air masses from the northern and central parts of the nation. The significant number of
fires from biomass burning in central Brazil associated with synoptic conditions contributed to the increase in PM2.5
concentrations by approximately 70–87% in the region. The transport of aerosols was a determining factor in PM2.5
exceeding the air quality standard in the region. Therefore, to minimize this problem, it is imperative to control biomass
burning in Brazil.