Ocorrência de granizo em plantações de fumo no Rio Grande do Sul

Abstract

In this work, the temporal and spatial distributions of the occurrence of hail that caused damage to tobacco plantations in the state of Rio Grande do Sul were characterized. The most intense cases were also identified, for the recognition of the meteorological systems that gave conditions to their development. In addition to the characterization of the atmospheric environment and spatial distribution of the events that caused the greatest impact on tobacco plantations. Hail data were used to carry out the work, which reached the tobacco plantations in Rio Grande do Sul between 1999 and 2018 (from July to February) during the tobacco harvest period. With reanalysis data from ERA-5 fields were generated for analysis of the synoptic environment of 3 hail cases selected within the analyzed period for a deeper characterization, due to the high number of damages caused in the tobacco plantations. It was found that the period with the most cases of properties damaged by hail was October followed by November and December, and the regions of RS that present the highest occurrence were the central and southern regions. Among the cases where the synoptic environment was analyzed, the third case presented the highest number of damages in smoke properties due to hail among the 3 cases analyzed in this work. This occurred due to the formation of low-level jet over most of the analyzed period.