Mesoscale Cyclonic Vortices Embedded in the South Atlantic Convergence Zone Associated with Natural Disasters in the State of São Paulo, Brazil
DOI:
https://doi.org/10.11137/1982-3908_2023_46_53097Keywords:
SACZ, MCV, Natural DisastersAbstract
Natural disasters (NDs) have been observed more frequently and with increasing intensities in Brazil. The South Atlantic Convergence Zone (SACZ) is identified as one of the main meteorological systems responsible for the NDs, however, intense rainfall does not occur along its entire length but is restricted to some locations within the band of cloudiness that defines it. Thus, the objective of this study is to analyze occurrences of mesoscale cyclonic vortices (MCV) in SACZ events that were associated with NDs in the state of São Paulo from 2013 to 2017 using data from the ERA5 Reanalysis, as well as to analyze one case study. To account for SACZ events, surface synoptic charts, observed and estimated precipitation data were used. ND events were selected from the Integrated Disaster Information System (S2ID) database. The methodology used by Quadro (2012) was adapted to identify MCV. The results showed 62 SACZ events, of which 28 were associated with NDs, and, of these, 10 presented MCV. The MCVs were separated into two groups: 1) MCVs in the SACZ events that showed precipitation at the location of the MCV and NDs and 2) MCVs in the SACZ events that did not show precipitation at the location of the MCV and NDs. Group 1 events were characterized by convergence at low levels and divergence at high levels of the atmosphere, vorticity values lower than -8 x 10-4 s-1 predominating at low levels (850–900 hPa), demonstrating a relationship with the highest precipitation accumulations and possibly with the occurrence of NDs. In the events of group 2, there was a predominance of negative values of vorticity in medium and high levels, the lack of a pattern in the field of divergence in the atmospheric levels, as well as lower values in the accumulated precipitation compared to the events of group 1. The case study was from January 11 to 15, 2016, associated with NDs in 8 cities. As a result, it was obtained that MCV was coupled in the atmosphere and the precipitation associated with it represented more than 37% of all the precipitation of the SACZ event, making it possible to attribute to the MCV a contribution in the occurrence of NDs caused by precipitation.
References
Barcellos, P.C.L., Silva, F.P., Vissirini, F.S.B., Magalhães, C.A., Terra, J.M., Dutra, M.R.F. & Amaral, I.C.F. 2016, 'Diagnóstico Meteorológico dos Desastres Naturais Ocorridos nos Últimos 20 Anos na Cidade de Duque de Caxias', Revista Brasileira de Meteorologia, vol. 31, no. 3, pp. 319-329, DOI:10.1590/0102-778631320150146.
Bosart, L.F. & Sanders, F. 1981, 'The Johnstown flood of July 1977: A long-lived convective system', Journal of Atmospheric Science, vol. 38. pp. 1616–42, DOI:10.1175/1520-0469(1981)038<1616:TJFOJA>2.0.CO;2.
Carvalho, L.M.V., Jones, C. & Liebmann, B. 2004, 'The South Atlantic convergence zone: Intensity, form, persistence, and relationships with intraseasonal to interannual activity and extreme rainfall', Journal of Climate, vol. 17, pp. 88–108, DOI:10.1175/1520-0442(2004)017<0088:TSACZI>2.0.CO;2.
Castro, A.L.C. 1998, Glossário de defesa civil: estudo de riscos e medicina de desastres, MPO/Departamento de Defesa Civil, Brasília, viewed 19 August 2022, <http://www.defesacivil.mg.gov.br/images/documentos/Defesa%20Civil/manuais/GLOSSARIO-Dicionario-Defesa-Civil.pdf>.
COBRADE – Classificação e Codificação Brasileira de Desastres 2012, COBRADE, viewed 20 August 2022, <https://www.defesacivil.pr.gov.br/sites/defesa-civil/arquivos_restritos/files/documento/2018-12/Cobrade_comsimbologia.pdf>.
Chen, S.J., Kuo, Y.H., Wang, W., Tao, Z.Y. & Cu, B. 1998, 'A modeling case study of heavy rainstorms along the Mei-Yu front', Monthly Weather Review, vol. 126, pp. 2330–51, DOI:10.1175/1520-0493(1998)126<2330:AMCSOH>2.0.CO;2.
Davis, C., Atkins, N., Bartels, D., Bosart, L., Coniglio, M., Bryan, G., Cotton, W., Dowell, D., Jewett, B., Johns, R., Jorgensen, D., Knievel, J., Knupp, K., Lee, W.C., Mcfarquhar, G., Moore, J., Przybylinski, R., Rauber, R., Smull, B., Trapp, R., Trier, S., Wakimoto, R., Weisman, M. & Ziegler, C. 2004, 'The Bow Echo and MCV Experiment: Observations and opportunities', Bulletin of American Meteorologycal Society, vol. 85, pp. 1075-93, DOI:10.1175/BAMS-85-8-1075.
Escobar, G.C.J. 2019, Zona de Convergência do Atlântico Sul (ZCAS): Critério de detecção para uso em centros operacionais de previsão de tempo, Instituto Nacional de Pesquisas Espaciais – INPE, São Jose dos Campos, viewed 20 August 2022, <http://urlib.net/8JMKD3MGP3W34R/3SGMUDP>.
Funk, C., Peterson, P., Landsfeld, M., Pedreros, D., Verdin, J., Shraddhanand, S., Husak, G., Rowland, J., Harrison, L., Hoell, A. & Michaelsen, J. 2015, 'The climate hazards infrared precipitation with stations - a new environmental record for monitoring extremes', Scientific Data, vol. 2, no. 150066, DOI:10.1038/sdata.2015.66.
Hersbach, H., Bell, B., Berrisford, P., Hirahara, S., Horányi, A., Muñoz-Sabater, J., Nicolas, J., Peubey, C., Radu, R., Schepers, D., Simmons, A., Soci, C., Abdalla, S., Abellan, X., Balsamo, G., Bechtold, P., Biavati, G., Bidlot, J., Bonavita, M., De Chiara, G., Dahlgren, P., Dee, D., Diamantakis, M., Dragani, R., Flemming, J., Forbes, R., Fuentes, M., Geer, A., Haimberger, L., Healy, S., Hogan, R. J., Hólm, E., Janisková, M., Keeley, S., Laloyaux, P., Lopez, P., Lupu, C., Radnoti, G., de Rosnay, P., Rozum, I., Vamborg, F., Villaume, S. & Thépaut, J.N. 2020, 'The ERA5 global reanalysis', Quarterly Journal of the Royal Meteorological Society, vol. 146, pp. 1999–2049, DOI:10.1002/qj.3803.
IBGE – Instituto Brasileiro de Geografia e Estatística 2021. Área Territorial Brasileira, IBGE, Rio de Janeiro, viewed in 20 August 2022, <https://www.ibge.gov.br/geociencias/organizacao-do-territorio/estrutura-territorial/15761-areas-dos-municipios.html?t=acesso-ao-produto&c=1>.
James, E.P. & Johnson, R.H. 2010, 'Patterns of precipitation and mesolow evolution in midlatitude mesoscale convective vortices', Monthly Weather Review, vol. 138, pp. 909–31, DOI:10.1175/2009MWR3076.1.
Kodama, Y. 1992, 'Large-scale common features of Sub-tropical Precipitation Zones (the Baiu Frontal Zone, the SPCZ, and the SACZ). Part I: characteristics of Subtropical Frontal Zones', Journal of Meteorological Society of Japan, vol. 70, no. 4, pp. 813-35, DOI:10.2151/jmsj1965.70.4_813.
Kousky, V. E. 1988, 'Pentad outgoing longwave radiation climatology for the South American sector', Revista Brasileira de Meteorologia, vol. 3, pp. 217-31.
Lenters, J.D. & Cook, K.H. 1999, 'Summertime precipitation variability over South America: Role of the large-scale circulation', Monthly Weather Review, vol. 127, pp. 409-31, DOI:10.1175/1520-0493(1999)127<0409:SPVOSA>2.0.CO;2.
Marcelino, E.V. 2008, Desastres Naturais e Geotecnologias: Conceitos Básicos, INPE/CRS, Santa Maria, viewed 19 August 2022, <http://mtc-m16c.sid.inpe.br/col/sid.inpe.br/mtc-m18@80/2008/07.02.16.22/doc/publicacao.pdf>.
Marengo, J.A., Liebmann, B., Kousky, V., Filizola, N. & Wainer, I. 2001, 'On the onset and end of the rainy season in the Brazilian Amazon Basin', Journal of Climate, vol. 14, pp. 833-53, DOI:10.1175/1520-0442(2001)014%3C0833:OAEOTR%3E2.0.CO;2.
Pereira Filho, A.J., Haas, R. & Ambrizzi, T. 2002, 'Caracterização de eventos de enchentes na bacia do Alto Tietê por meio do radar meteorológico e da modelagem numérica de mesoescala', Congresso Brasileiro de Meteorologia, vol. 12, Foz do Iguaçu, PR.
Quadro, M.F.L. 1994, 'Estudos de episódios de Zona de Convergência do Atlântico Sul (ZCAS) sobre a América do Sul', Master's dissertation, Instituto Nacional de Pesquisas Espaciais, São José dos Campos.
Quadro, M.F.L. 2012, 'Estudo de Vórtices Ciclônicos de Mesoescala associados à Zona de Convergência do Atlântico Sul', PhD thesis, Universidade de São Paulo.
Quadro, M.F.L., Silva Dias, M.A.F. & Herdies, D.L. 2016, 'Análise de um Vórtice Ciclônico de Mesoescala Associado à ZCAS em Janeiro de 2009', Revista Brasileira de Meteorologia, vol. 31, no. 3, pp. 273-87, DOI:10.1590/0102-778631320150141.
Reboita, M.S., Gan, M.A., Rocha, R.P. & Ambrizzi, T. 2010, 'Regimes de precipitação na América do Sul: uma revisão bibliográfica', Revista Brasileira de Meteorologia, vol. 25, no. 2, pp. 185-204, DOI:10.1590/S0102-77862010000200004.
Rosa, E.B., Pezzi, L.P., Quadro, M.F.L & Brunsell, N. 2020, 'Automated Detection Algorithm for SACZ, Oceanic SACZ, and Their Climatological Features', Frontiers In Environmental Science, vol. 8, e18, DOI:10.3389/fenvs.2020.00018.
Ruv Lemes, M.C., Reboita, M.S. & Torres, R.R. 2019, 'Elementos Fisiográficos e a Precipitação no Estado de São Paulo', XVIII Simpósio Brasileiro de Geografia Física Aplicada, vol. 18, Fortaleza, CE.
Sacramento Neto, O.B., Escobar, G.C.J. & Dias Da Silva, P.E. 2010, 'Método objetivo para identificar episódios de Zonas de Convergência de Umidade (ZCOU) no ambiente operacional do Centro de Previsão de Tempo e Estudos Climáticos – CPTEC', Congresso Brasileiro de Meteorologia, Belém, PA.
Silva, L.J., Reboita, M.S. & Rocha, R.P. 2014, 'Relação da Passagem de Frentes Frias na Região Sul de Minas Gerais (RSMG) com a Precipitação e Eventos de Geada', Revista Brasileira de Climatologia, vol. 14, no. 10, pp. 229-46, DOI:10.5380/abclima.v14i1.36314.
Silva, J.P.R., Reboita, M.S. & Escobar, G.C.J. 2019, 'Caracterização da Zona de Convergência do Atlântico Sul em campos atmosféricos recentes', Revista Brasileira de Climatologia, vol. 25, pp. 355-77, DOI:10.5380/abclima.v25i0.64101.
Sugahara, S., Da Rocha, R.P., Ynoue, R.Y. & Da Silveira, R.B. 2012, 'Homogeneity assessment of a station climate series (1933-2005) in the Metropolitan Area of São Paulo: instruments change and urbanization effects', Theoretical and Applied Climatology, vol. 107, no. 3-4, pp. 361-74, DOI:10.1007/s00704-011-0485-x
Teixeira, M.S. & Satyamurty, P. 2004, 'Episódios de chuvas intensas na região sul do Brasil. Parte I: configuração sinópticas associadas', Congresso Brasileiro de Meteorologia, Fortaleza.
WMO - World Meteorological Organization 2003, Guidelines on Climate Metadata and Homogenization, Secretariat of the World Meteorological Organization, Geneva, viewed 19 August 2022, <https://library.wmo.int/doc_num.php?explnum_id=10751>.
Zhou, J. & Lau, K.M. 1998, 'Does a Monsoon Climate Exist Over South America', Journal of Climate, vol. 11, no. 5, pp. 1020-40, DOI:10.1175/1520-0442(1998)011%3C1020:DAMCEO%3E2.0.CO;2.
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