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- Title
Análise de Eventos de Tempo Significativo Atuantes Durante os Experimentos CHUVA-GOAmazon2014/15.
- Authors
dos Santos, Aline Luara; Wickboldt Eichholz, Cristiano; Vieira Mattos, Enrique; Herdies, Dirceu Luis
- Abstract
This work evaluated the physical and thermodynamic differences between the precipitating systems of the dry, rainy and transition seasons in the Manaus/AM region during the CHUVA-GOAmazon2014/15 experiments. Reflectivity data from Manaus Banda-S radar and meteorological indexes calculated from the radiosonde were used. Approximately 4961 precipitating systems were identified and tracked using the Forecasting and Tracking the Evolution of Cloud Clusters (ForTraCC) algorithm and the precipitation rate, size and life span were calculated. Through the percentile methodology (> 90 %), Significant Weather Events (SWE) were defined. These events are those that presented, statistically, the highest values of precipitation rate, size and lifetime of the precipitating systems. The results showed that, although the rainy season has a higher content of precipitable water and accumulated rain, the dry season precipitating systems were the ones with the highest precipitation rates and, therefore, the greatest potential for the development of severe events. In general, a greater number of cases of SWE occurred during the transition and dry seasons, a period with less atmospheric humidity, but high values of potential energy available for convection, convective inhibition energy and vertical wind shear, which contributed to more intense and lasting convective processes.
- Subjects
RADAR meteorology; VERTICAL wind shear; HUMIDITY; PRECIPITABLE water; WIND power; MAXIMUM power point trackers
- Publication
Anuario do Instituto de Geociencias, 2020, Vol 43, Issue 2, p33
- ISSN
0101-9759
- Publication type
Article
- DOI
10.11137/2020_2_33_43