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Variability in warm-season atmospheric circulation and precipitation patterns over subtropical South America: relationships between the South Atlantic convergence zone and large-scale organized convection over the La Plata basin

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Abstract

Warm-season precipitation variability over subtropical South America is characterized by an inverse relationship between the South Atlantic convergence zone (SACZ) and precipitation over the central and western La Plata basin of southeastern South America. This study extends the analysis of this “South American Seesaw” precipitation dipole to relationships between the SACZ and large, long-lived mesoscale convective systems (LLCSs) over the La Plata basin. By classifying SACZ events into distinct continental and oceanic categories and building a logistic regression model that relates LLCS activity across the region to continental and oceanic SACZ precipitation, a detailed account of spatial variability in the out-of-phase coupling between the SACZ and large-scale organized convection over the La Plata basin is provided. Enhanced precipitation in the continental SACZ is found to result in increased LLCS activity over northern, northeastern, and western sections of the La Plata basin, in association with poleward atmospheric moisture flux from the Amazon basin toward these regions, and a decrease in the probability of LLCS occurrence over the southeastern La Plata basin. Increased oceanic SACZ precipitation, however, was strongly related to reduced atmospheric moisture and decreased probability of LLCS occurrence over nearly the entire La Plata basin. These results suggest that continental SACZ activity and large-scale organized convection over the northern and eastern sections of the La Plata basin are closely tied to atmospheric moisture transport from the Amazon basin, while the warm coastal Brazil Current may also play an important role as an evaporative moisture source for LLCSs over the central and western La Plata basin.

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References

  • Anderson CJ, Arritt RW (1998) Mesoscale convective complexes and persistent elongated convective systems over the United States during 1992 and 1993. Mon Wea Rev 126(3):578–599

    Article  Google Scholar 

  • Augustine JA (1985) An automated method for the documentation of cloud-top characteristics of mesoscale convective systems. NOAA Technical Memo ERL ESG-10, Boulder, CO

  • Boers N, Rheinwalt A, Bookhagen B, Barbosa HMJ, Marwan N, Marengo J, Kurths J (2014) The South American rainfall dipole: a complex network analysis of extreme events. Geophys Res Lett 41(20):7397–7405

    Article  Google Scholar 

  • Bombardi RJ, Carvalho LMV, Jones C, Reboita MS (2014) Precipitation over eastern South America and the South Atlantic Sea surface temperature during neutral ENSO periods. Clim Dyn 42(5–6):1553–1568

    Article  Google Scholar 

  • Carvalho LM, Jones C, Liebmann B (2002) Extreme precipitation events in southeastern South America and large-scale convective patterns in the South Atlantic convergence zone. J Clim 15(17):2377–2394

    Article  Google Scholar 

  • Carvalho LM, Jones C, Liebmann B (2004) The South Atlantic convergence zone: intensity, form, persistence, and relationships with intraseasonal to interannual activity and extreme rainfall. J Clim 17(1):88–108

    Article  Google Scholar 

  • Carvalho LM, Silva AE, Jones C, Liebmann B, Dias PLS, Rocha HR (2011) Moisture transport and intraseasonal variability in the South America monsoon system. Clim Dyn 36(9–10):1865–1880

    Article  Google Scholar 

  • Carvalho LM, Jones C, Posadas AN, Quiroz R, Bookhagen B, Liebmann B (2012) Precipitation characteristics of the South American monsoon system derived from multiple datasets. J Clim 25(13):4600–4620

    Article  Google Scholar 

  • Chen T-C, Weng S-P, Schubert S (1999) Maintenance of austral summertime upper-tropospheric circulation over tropical South America: the Bolivian High-Nordeste Low system. J Atmos Sci 56(13):2081–2100

    Article  Google Scholar 

  • Coelho CAS, Cardoso DHF, Firpo MAF (2015) Precipitation diagnostics of an exceptionally dry event in São Paulo, Brazil. Theor Appl Climatol. doi:10.1007/s00704-015-1540-9

    Google Scholar 

  • Davis CA, Weisman ML (1994) Balanced dynamics of mesoscale vortices produced in simulated convective systems. J Atmos Sci 51(14):2005–2030

    Article  Google Scholar 

  • de Oliveira Vieira S, Satyamurty P, Andreoli RV (2013) On the South Atlantic Convergence Zone affecting southern Amazonia in austral summer. Atmos Sci Lett 14(1):1–6

    Article  Google Scholar 

  • Delvenne P, Vasen F, Vara AM (2013) The “soy-ization” of Argentina: the dynamics of the “globalized” privatization regime in a peripheral context. Technol Soc 35(2):153–162

    Article  Google Scholar 

  • Díaz A, Aceituno P (2003) Atmospheric circulation anomalies during episodes of enhanced and reduced convective cloudiness over Uruguay. J Clim 16(19):3171–3185

    Article  Google Scholar 

  • Doyle ME, Barros VR (2002) Midsummer low-level circulation and precipitation in subtropical South America and related sea surface temperature anomalies in the South Atlantic. J Clim 15(23):3394–3410

    Article  Google Scholar 

  • Durkee JD, Mote TL (2010) A climatology of warm-season mesoscale convective complexes in subtropical South America. Int J Climatol 30(3):418–431

    Google Scholar 

  • Durkee JD, Mote TL, Shepherd JM (2009) The contribution of mesoscale convective complexes to rainfall across subtropical South America. J Clim 22(17):4590–4605

    Article  Google Scholar 

  • Food and Agriculture Organization of the United Nations (FAO) (2014) FAOSTAT. http://faostat3.fao.org/faostat-gateway/go/to/browse/Q/*/E. Accessed 18 May 2015

  • Fritsch JM, Forbes G (2001) Mesoscale convective systems. Meteorol Monogr 28(50):323–358

    Article  Google Scholar 

  • Gan M, Kousky V, Ropelewski C (2004) The South America monsoon circulation and its relationship to rainfall over west-central Brazil. J Clim 17(1):47–66

    Article  Google Scholar 

  • Garreaud RD, Vuille M, Compagnucci R, Marengo J (2009) Present-day South American climate. Palaeogeo Palaeoclimatol Palaeoecol 281(3):180–195

    Article  Google Scholar 

  • Goldfarb L, Zoomers A, Fang Z (2013) The drivers behind the rapid expansion of genetically modified soya production into the Chaco region of Argentina. In Fang Z (ed) Biofuels—economy, environment and sustainability. INTECH Open Access Publisher, http://www.intechopen.com/books/biofuels-economy-environment-and-sustainability/the-drivers-behind-the-rapid-expansion-of-genetically-modified-soya-production-into-the-chaco-region. Accessed 18 May 2015

  • Gonzalez PL, Vera CS (2014) Summer precipitation variability over South America on long and short intraseasonal timescales. Clim Dyn 43(7–8):1993–2007

    Article  Google Scholar 

  • Hamilton L (1992) Regression with graphics. Brooks/Cole, Pacific Grove

    Google Scholar 

  • Herdies DL, da Silva A, Silva Dias MA, Nieto-Ferreira R (2002) Moisture budget of the bimodal pattern of the summer circulation over South America. J Geophys Res 107(D20):LBA 42-41–LBA 42-10

    Article  Google Scholar 

  • Houze RA Jr (2004) Mesoscale convective systems. Rev Geophys 42(4):RG4003

    Article  Google Scholar 

  • International Service for the Acquisition of Agri-Biotech Applications (ISAAA) (2014) ISAAA Brief 46-2013: Executive summary. http://www.isaaa.org/resources/publications/briefs/46/executivesummary/default.asp. Accessed 18 May 2015

  • Jirak IL, Cotton WR, McAnelly RL (2003) Satellite and radar survey of mesoscale convective system development. Mon Wea Rev 131(10):2428–2449

    Article  Google Scholar 

  • Junquas C, Vera CS, Li L, Le Treut H (2012) Summer precipitation variability over Southeastern South America in a global warming scenario. Clim Dyn 38(9–10):1867–1883

    Article  Google Scholar 

  • Laing AG, Fritsch JM (1997) The global population of mesoscale convective complexes. Q J R Meteorol Soc 123(538):389–405

    Article  Google Scholar 

  • Laing AG, Fritsch JM (2000) The large-scale environments of the global populations of mesoscale convective complexes. Mon Wea Rev 128(8):2756–2776

    Article  Google Scholar 

  • Liebmann B, Kiladis GN, Marengo J, Ambrizzi T, Glick JD (1999) Submonthly convective variability over South America and the South Atlantic Convergence Zone. J Clim 12(7):1877–1891

    Article  Google Scholar 

  • Liebmann B, Kiladis GN, Vera CS, Saulo AC, Carvalho LM (2004) Subseasonal variations of rainfall in South America in the vicinity of the low-level jet east of the Andes and comparison to those in the South Atlantic Convergence Zone. J Clim 17(19):3829–3842

    Article  Google Scholar 

  • Liu C, Zipser EJ (2013) Regional variation of morphology of organized convection in the tropics and subtropics. J Geophys Res 118(2):453–466

    Google Scholar 

  • Maddox RA (1980) Mesoscale convective complexes. Bull Am Meteor Soc 61(11):1374–1387

    Article  Google Scholar 

  • Mechoso CR, Dıas P, Baetghen W, Barros V, Berbery EH, Clarke R, Cullen H, Ereño C, Grassi B, Lettenmaier D (2001) Climatology and hydrology of the La Plata Basin. Document of VAMOS/CLIVAR. http://www.atmos.umd.edu/~berbery/laplata/. Accessed 18 May 2015

  • Muza MN, Carvalho LM, Jones C, Liebmann B (2009) Intraseasonal and interannual variability of extreme dry and wet events over southeastern South America and the subtropical Atlantic during austral summer. J Clim 22(7):1682–1699

    Article  Google Scholar 

  • Nieto-Ferreira R, Rickenbach TM, Herdies DL, Carvalho LM (2003) Variability of South American convective cloud systems and tropospheric circulation during January–March 1998 and 1999. Mon Wea Rev 131(5):961–973

    Article  Google Scholar 

  • Nieto-Ferreira R, Rickenbach TM, Wright EA (2011) The role of cold fronts in the onset of the monsoon season in the South Atlantic convergence zone. Q J R Meteorol Soc 137(657):908–922

    Article  Google Scholar 

  • Nogués-Paegle J, Mo KC (1997) Alternating wet and dry conditions over South America during summer. Mon Wea Rev 125(2):279–291

    Article  Google Scholar 

  • Nogués-Paegle J, Mechoso CR, Fu R, Berbery EH, Chao WC, Chen T-C, Cook K, Diaz AF, Enfield D, Nieto-Ferreira R (2002) Progress in Pan American CLIVAR research: understanding the South American monsoon. Meteorologica 27(12):1–30

    Google Scholar 

  • Penalba OC, Robledo FA (2010) Spatial and temporal variability of the frequency of extreme daily rainfall regime in the La Plata Basin during the 20th century. Clim Change 98(3–4):531–550

    Article  Google Scholar 

  • Rahn DA, Garreaud RD (2014) A synoptic climatology of the near-surface wind along the west coast of South America. Int J Climatol 34(3):780–792

    Article  Google Scholar 

  • Rasmussen KL, Houze RA Jr (2011) Orogenic convection in subtropical South America as seen by the TRMM satellite. Mon Wea Rev 139(8):2399–2420

    Article  Google Scholar 

  • Ribeiro BZ, Seluchi ME, Chou SC (2015) Synoptic climatology of warm fronts in Southeastern South America. Int J Climatol 36(2):644–655

    Article  Google Scholar 

  • Rickenbach TM, Nieto-Ferreira R, Halverson JB, Herdies DL, Silva Dias MA (2002) Modulation of convection in the southwestern Amazon basin by extratropical stationary fronts. J Geophys Res 107(D20):LBA 7-1–LBA 7- 13

    Article  Google Scholar 

  • Romatschke U, Houze RA Jr (2013) Characteristics of precipitating convective systems accounting for the summer rainfall of tropical and subtropical South America. J Hydrometeorol 14(1):25–46

    Article  Google Scholar 

  • Ruxton GD (2006) The unequal variance t-test is an underused alternative to Student’s t-test and the Mann-Whitney U test. Behav Ecol 17(4):688–690

    Article  Google Scholar 

  • Saha S, Moorthi S, Pan H-L, Wu X, Wang J, Nadiga S, Tripp P, Kistler R, Woollen J, Behringer D (2010) The NCEP climate forecast system reanalysis. Bull Am Meteor Soc 91(8):1015–1057

    Article  Google Scholar 

  • Salio P, Nicolini M, Saulo AC (2002) Chaco low-level jet events characterization during the austral summer season. J Geophys Res 107(D24):ACL 32-1–ACL 32-17

    Article  Google Scholar 

  • Salio P, Nicolini M, Zisper EJ (2007) Mesoscale convective systems over southeastern South America and their relationship with the South American low-level jet. Mon Wea Rev 135(4):1290–1309

    Article  Google Scholar 

  • Saulo AC, Seluchi ME, Nicolini M (2004) A case study of a Chaco low-level jet event. Mon Wea Rev 132(11):2669–2683

    Article  Google Scholar 

  • Siqueira JR, Machado LAT (2004) Influences of the frontal systems on the day-to-day convection variability over South America. J Clim 17(9):1754–1766

    Article  Google Scholar 

  • Siqueira JR, Rossow WB, Machado LAT, Pearl C (2005) Structural characteristics of convective systems over South America related to cold-frontal incursions. Mon Wea Rev 133(5):1045–1064

    Article  Google Scholar 

  • Skamarock WC, Weisman ML, Klemp JB (1994) Three-dimensional evolution of simulated long-lived squall lines. J Atmos Sci 51(17):2563–2584

    Article  Google Scholar 

  • Teixeira MdS, Satyamurty P (2007) Dynamical and synoptic characteristics of heavy rainfall episodes in southern Brazil. Mon Wea Rev 135(2):598–617

    Article  Google Scholar 

  • Teixeira MdS, Satyamurty P (2011) Trends in the frequency of intense precipitation events in southern and southeastern Brazil during 1960–2004. J Clim 24(7):1913–1921

    Article  Google Scholar 

  • van der Ent RJ, Savenije HH (2013) Oceanic sources of continental precipitation and the correlation with sea surface temperature. Water Resour Res 49(7):3993–4004

    Article  Google Scholar 

  • Velasco I, Fritsch JM (1987) Mesoscale convective complexes in the Americas. J Geophys Res 92(D8):9591–9613

    Article  Google Scholar 

  • Vera CS, Baez J, Douglas M, Emmanuel C, Marengo J, Meitin J, Nicolini M, Nogués-Paegle J, Paegle J, Penalba OC (2006) The South American low-level jet experiment. Bull Am Meteor Soc 87(1):63–77

    Article  Google Scholar 

  • Vera CS, Vigliarolo PK, Berbery EH (2002) Cold season synoptic-scale waves over subtropical South America. Mon Wea Rev 130(3):684–699

    Article  Google Scholar 

  • Zarfl C, Lumsdon AE, Berlekamp J, Tydecks L, Tockner K (2015) A global boom in hydropower dam construction. Aquat Sci 77(1):161–170

    Article  Google Scholar 

  • Zipser EJ, Liu C, Cecil DJ, Nesbitt SW, Yorty DP (2006) Where are the most intense thunderstorms on Earth? Bull Am Meteor Soc 87(8):1057–1071

    Article  Google Scholar 

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Acknowledgments

The authors would like to thank Dr. Rosana Nieto Ferreira and two anonymous reviewers for their valuable comments which helped improve an earlier version of this manuscript.

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  1. Department of Geography, University of Georgia, Athens, GA, USA

    Kyle S. Mattingly & Thomas L. Mote

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  1. Kyle S. Mattingly
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Correspondence to Kyle S. Mattingly.

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Mattingly, K.S., Mote, T.L. Variability in warm-season atmospheric circulation and precipitation patterns over subtropical South America: relationships between the South Atlantic convergence zone and large-scale organized convection over the La Plata basin. Clim Dyn 48, 241–263 (2017). https://doi.org/10.1007/s00382-016-3072-0

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