Seasonal analysis of MCS that generated severe events on Rio Grande do Sul from 2004 to 2008

Authors

  • Cláudia Rejane Jacondino de Campos Universidade Federal de Pelotas
  • Gustavo Rasera UFSM

DOI:

https://doi.org/10.5902/2179460X13622

Keywords:

Remote sensing. ForTrACC. MCS. Severe events.

Abstract

In this study were analyzed Mesoscale Convective Systems that reached Rio Grande do Sul state (RS), Brazil, and generated severe events (MCSRS-SE), as well as the Severe Events related to them (SEMCSRS), from 2004 to 2008. For this study, different data sources were used: maximum size, lifetime and trajectories of MCS that reached RS (MCSRS) based on Forecasting and Tracking of Active Cloud Clusters (ForTrACC) analysis tool; raw infra-red (channel 4) satellite imagery from GOES (Geostationary Operational Environmental Satellite) 10 and 12 satellites and Severe Events (SE) reports obtained from RS Civil Defense data base. The results showed that: i) 10.7% of MCSRS generated 45% of SE; ii) MCSRS-SE were more frequent in JAS (Jul, Aug, Sep); iii) JAS e OND (Oct, Nov, Dec) presented the largest number of SEMCSRS; iv) there was a direct relationship between size and lifetime of MCSRSSE; v) the smallest size and duration of MCSRS-SE was detected in JFM (Jan, Feb, Mar); vi) the longest MCSRS-SE were observed in AMJ (Apr, May, Jun) while the largest in JAS; vii) MCSRSSE preferred mean trajectory, in all quarters, were predominantly zonal, from west to east.

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Author Biographies

Cláudia Rejane Jacondino de Campos, Universidade Federal de Pelotas

Possui graduação em Meteorologia pela Universidade Federal de Pelotas (1988), mestrado em Agronomia (Meteorologia Agrícola) pela Universidade Federal de Viçosa (1990) e doutorado em Física da Atmosfera pela Universite de Toulouse III (Paul Sabatier) (1996). Atualmente é professora Associado III da Universidade Federal de Pelotas. Tem experiência na área de Geociências, com ênfase em Meteorologia de mesoescala, atuando principalmente nos seguintes temas: sistema convectivo de mesoescala, modelagem de mesoescala, micrometeorologia.

Gustavo Rasera, UFSM

Possui Graduação em Meteorologia pela Universidade Federal de Pelotas, UFPel (2007-2010). M.Sc. em Meteorologia pelo Programa de Pós-graduação em Meteorologia da Universidade Federal de Pelotas (2011-2013). Atualmente é doutorando do PPGMet-UFSM. Áreas de interesse: meteorologia, meteorologia de mesoescala, sensoriamento remoto.

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Published

2014-09-12

How to Cite

Campos, C. R. J. de, & Rasera, G. (2014). Seasonal analysis of MCS that generated severe events on Rio Grande do Sul from 2004 to 2008. Ciência E Natura, 36(3), 481–491. https://doi.org/10.5902/2179460X13622

Issue

Vol. 36 No. 3 (2014)

Section

Meteorology

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