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The impact of El Niño on South American summer climate during different phases of the Pacific Decadal Oscillation

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Abstract

In austral summer, the observed El Niño (EN) events during warm Pacific Decadal Oscillation (PDO) phases (PDO(+)) exhibited large anomalous upper level wave patterns in response to larger Sea Surface Temperature (SST) anomalies in the Equatorial Pacific and Atlantic Oceans compared with SST anomalies in EN events during cold PDO phases (PDO(−)). The precipitation anomalies in PDO(+) EN are increased over Southeastern South America (SESA) associated with the intensification of the moisture flux convergence in this region. The PDO(−) EN events exhibit positive precipitation anomalies only over southern SESA, while negative anomalies were observed in the north. Downward motion and anomalous divergence over central eastern Brazil may have contributed to the weakening of the northwesterly moisture flux convergence associated with the South American Low Level Jet (SALLJ) over the subtropics. The extratropical cyclones showed higher frequency and lower central pressures in southern Brazil, Uruguay, northeastern Argentina, and Southwest Atlantic Ocean during the PDO(+) EN events compared with the PDO(−) EN events. Such increase in the frequency and intensity of cyclogenesis cases seems to be in accordance with the anomalous moisture flux convergence over the SESA and associated reduction in the Sea Level Pressure observed during PDO(+) EN events. In order to investigate the impact of a canonical El Niño event over South America under different PDO phases, two numerical experiments were done with an Atmospheric General Circulation Model. Global SST and ice sea fields average over years characterized by (a) PDO(+) and (b) PDO(−) were considered as climatologically fields, and a composite of anomalies of SST of all El Niño events observed in 1950–1999 was added in the region 20ºS–20ºN;120ºW–175ºW of both “climatologies.” The differences in experiments suggest that a canonical EN may produce significant different anomalous atmospheric patterns associated with distinct PDO climatologies. The more significant differences are simulated over extreme northern and eastern Brazil. Additional numerical experiments isolating the observed variability of SST over several oceanic basins during different PDO phases will be conducted to study their particular role on the South American climate.

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References

  • Ambrizzi T, Souza EB, Pulwarty RS (2004) The Hadley and walker regional circulations and associated ENSO impacts on South American seasonal rainfall. In: Diaz HF, Bradley RS (eds) The Hadley circulation: present, past and future. Kluwer Publishers 7:203–235

  • Andreoli RV, Kayano MT (2005) ENSO-related rainfall anomalies in South America and associated circulation features during warm and cold Pacific Decadal Oscillation regimes. Int J Climatol 25:2017–2030. doi:10.1002/joc.1222

    Article  Google Scholar 

  • Berbery EH, Barros VR (2002) The hydrological cycle of the La Plata Basin in South America. J Hydrometeorol 3:630–645

    Article  Google Scholar 

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

    Article  Google Scholar 

  • Carvalho LMV, Jones C, Ambrizzi T (2005) Opposite phases of the Antarctic oscillation and relationships with intraseasonal to interannual activity in the tropics during the austral summer. J Climate 18:702–718. doi:10.1175/JCLI-3284.1

    Article  Google Scholar 

  • Chan S, Behera S, Yamagata T (2008) Indian Ocean dipole influence on South American rainfall. Geophys Res Lett 35(14):L14S12

    Article  Google Scholar 

  • Chen M, Xie P, Janowiak JE, Arkin EPA (2002) Global land precipitation: a 50-yr monthly analysis based on gauge observations. J Hydrometeorol 3(3):249–266

    Article  Google Scholar 

  • Collins WD, Rasch PJ, Boville BA, Hack JJ, Mccaa JR, Williamson DL, Briegleb B, Bitz C, Lin SJ, Zhang M (2006) The formulation and atmospheric simulation of the community atmosphere model: CAM3. J Climate 19(11):2144–2161. doi:10.1175/JCLI3760.1

    Article  Google Scholar 

  • Dettinger MD, Battisti DS, Garreaud RD Jr, Mccabe GJ, Bitz CM (2001) Interhemispheric effects of interannual and decadal ENSOlike climate variations on the Americas. In: Markgraf V (ed) Interhemispheric climate linkages. Academic, San Diego, pp 1–16

    Chapter  Google Scholar 

  • Douglas MW, Peña M, Villarpando R (2000) Special observations of the low level flow over eastern Bolivia during the1999 atmospheric mesoscale campaign. Extended Abstracts of the 6th International Conference on Southern Hemisphere Meteorology and Oceanography. Santiago, Chile

  • Drumond ARM, Ambrizzi T (2005) The role of SST on the South American atmospheric circulation during January, February and March 2001. Climate Dyn 24:781–791

    Article  Google Scholar 

  • Enfield DB, Mestas-Nuñez A (1999) Multiscale variabilities in global sea surface temperatures and their relationships with tropospheric climate patterns. J Climate 12:2719–2733

    Article  Google Scholar 

  • Folland CK, Renwick JA, Salinger MJ, Mullan AB (2002) Relative influences of the IPO and ENSO on the South Pacific convergence zone. Geophys Res Lett 29(13):10.1029

    Article  Google Scholar 

  • Gan MA, Rao VB (1991) Surface cyclogeneses over South America. Mon Weather Rev 119:1293–1302

    Article  Google Scholar 

  • Garcia SR, Kayano MT (2006) South American Monsoon during the two phases of The Pacific Decadal Oscillation. Proceedings of 8 ICSHMO 1049–1055. Foz do Iguaçu, Brazil

  • Herdies DL, Da Silva A, Silva Dias MA, Ferreira RN (2002) Moisture budget of the bimodal pattern of the summer circulation over South America. J Geophys Res 107:8075–8084

    Article  Google Scholar 

  • Kalnay E, Kanamitsu M, Kistler R, Collins W, Deaven D, Gandin L, Iredell M, Saha S, White G, Woollen J, Zhu Y, Chelliah M, Ebisuzaki W, Higgins W, Janoviak J, Mo KC, Ropelewski C, Wang J, Leetmaa A, Reynolds R, Roy J, Joseph D (1996) The NCEP/NCAR 40-year reanalysis project. Bull Am Meteorol Soc 77(3):437–471

    Article  Google Scholar 

  • Karoly DJ (1989) Southern hemisphere circulation features associated with El Niño–Southern Oscillation events. J Climate 2:1239–1252

    Article  Google Scholar 

  • Kayano MT, Andreoli RV (2007) Relations of South American summer rainfall interannual variations with the Pacific Decadal Oscillation. Int J Climatol 27:531–540

    Article  Google Scholar 

  • Kiladis GN, Mo KC (1998) Interannual and intraseasonal variability in the Southern Hemisphere. Meteorology of the Southern Hemisphere, Meteor Monogr 49, Amer Meteor Soc 307–336

  • Magaña V, Ambrizzi T (2005) Dynamics of subtropical vertical motions over the Americas during El Niño boreal winters. Atmósfera 18(4):211–233

    Google Scholar 

  • Mantua NJ, Hare SR, Zhang Y, Wallace JM, Francis RCA (1997) Pacific interdecadal climate oscillation with impacts on salmon production. Bull Am Meteorol Soc 78:1069–1079

    Article  Google Scholar 

  • Marengo J (2004) Interdecadal and long term rainfall variability in the Amazon basin. Theor Appl Climatol 78:79–96

    Article  Google Scholar 

  • Marengo JA, Soares WR, Saulo C, Nicolini M (2004) Climatology of the Low-Level Jet east of the Andes as derived from the NCEP reanalyses. J Climate 17:2261–2280

    Article  Google Scholar 

  • Mendes D, Souza EP, Trigo IF, Miranda PMA (2007) On precursors of South American cyclogeneses. Tellus Ser A 59(1):114–121. doi:10.1111/j.1600-0870.2006.00215.x

    Article  Google Scholar 

  • Mo KC, Paegle JN (2001) The Pacific-South American modes and their downstream effects. Int J Climatol 21:1211–1229

    Article  Google Scholar 

  • Murray RJ, Simmonds I (1991a) A numerical scheme for tracking cyclone centers from digital data. Part I: development and operation of the scheme. Aust Meteorol Mag 39:155–166

    Google Scholar 

  • Murray RJ, Simmonds I (1991b) A numerical scheme for tracking cyclone centres from digital data. Part II: application to January and July general circulation model simulations. Aust Meteorol Mag 39:167–180

    Google Scholar 

  • Newman M, Compo GP, Alexander MA (2003) ENSO-forced variability of the Pacific decadal oscillation. J Climate 16:3853–3857

    Article  Google Scholar 

  • Oleson KW, Dai Y, Bonan GB, Bosilovich M, Dickinson R, Dirmeyer P, Hoffman F, Houser P, Levis S, Niu G-Y, Thornton P, Vertenstein M, Yang Z-L, Zeng X (2004) Technical description of the Community Land Model (CLM) Technical Report NCAR/TN-461+STR, National Center for Atmospheric Research, Boulder, CO. 80307–3000, p 174

  • Paegle J (1998) A comparative review of South American low level jets. Meteorologica 3:73–82

    Google Scholar 

  • Parker DE, Folland CK, Jackson M (1995) Marine surface temperature: observed variations and data requirements. Clim Change 31:559–600

    Article  Google Scholar 

  • Pezza AB, Ambrizzi T (2003) Variability of southern hemisphere cyclone and anticyclone behavior: further analysis. J Climate 16(7):1075–1083

    Article  Google Scholar 

  • Pezza A, Simmonds I, Renwick J (2007) Southern hemisphere cyclones and anticyclones: recent trends and links with decadal variability in the Pacific Ocean. Int J Climatol 27:1403–1419. doi:10.1002/joc.1477

    Article  Google Scholar 

  • Power S, Colman R (2006) Multi-year predictability in a coupled general circulation model. Climate Dyn 26:247–272

    Article  Google Scholar 

  • Power SB, Smith IN (2007) Weakening of the walker circulation and apparent dominance of El Niño both reach record levels, but has ENSO really changed? Geophys Res Lett 34:L18702. doi:10.1029/2007GL030854

    Article  Google Scholar 

  • Power S, Casey T, Folland C, Colman A, Mehta V (1999) Interdecadal modulation of the impact of ENSO on Australia. Climate Dyn 15:319–324

    Article  Google Scholar 

  • Power S, Haylock M, Colman R, Wang X (2006) The predictability of interdecadal changes in ENSO activity and ENSO teleconnections. J Climate 19:4755–4771

    Article  Google Scholar 

  • Rayner NA, Parker DE, Horton EB, Folland CK, Alexander LV, Rowell DP, Kent EC, Kaplan A (2003) Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late nineteenth century. J Geophys Res 108(D14):4407. doi:10.1029/2002JD002670

    Article  Google Scholar 

  • Reboita MS; Ambrizzi T; da Rocha RP (2009) Relationship between the southern annular mode and southern hemisphere atmospheric systems. Brazilian Journal of Meteorology 24(1). doi:10.1590/S0102-77862009000100005

  • Robertson AW, Mechoso CR (2000) Interannual and interdecadal variability of the South Atlantic convergence zone. Mon Weather Rev 128:2947–2957

    Article  Google Scholar 

  • Saji NH, Ambrizzi T, Ferraz SET (2005) Indian Ocean Dipole events and austral surface air temperature anomalies. Dyn Atmos Ocean 39:87–101

    Article  Google Scholar 

  • Saulo AC, Nicolini M, Chou SC (2000) Model characterization of the South American low-level flow during the 1997–1998 spring–summer season. Clim Dyn 16:867–881

    Article  Google Scholar 

  • Schneider N (2005) The forcing of the pacific decadal oscillation. J Clim 18:4355–4373. doi:10.1175/JCLI3527.1

    Article  Google Scholar 

  • Servain J (1991) Simple climatic indices for the tropical Atlantic Ocean and some applications. J Geophys Res 96:15137–15146

    Article  Google Scholar 

  • Silva GAM, Ambrizzi T (2006) Inter-El Niño variability and its impact on the South American low-level jet east of the Andes during austral summer—two case studies. Advans Geosci 6:283–287, SRef-ID: 1680- 7359/adgeo/2006-6-283

    Article  Google Scholar 

  • Silva GAM, Ambrizzi T (2009) Summertime moisture transport over Southeastern South America and extratropical cyclones behavior during inter-El Niño events. Theor Appl Climatol. doi:10.1007/s00704-009-0218-6

    Google Scholar 

  • Silva GAM, Ambrizzi T, Marengo JA (2009) Observational evidences on the modulation of the South American Low Level Jet east of the Andes according the ENSO variability. Ann Geophyc 27:645–665

    Article  Google Scholar 

  • Silvestri G (2004) El Niño signal variability in the precipitation over southeastern South America during austral summer. Geophys Res Lett 31:L18206. doi:10.1029=2004GL020590

    Article  Google Scholar 

  • Smith TM, Reynolds RW, Livezey RE, Stokes DC (1996) Reconstruction of historical sea surface temperatures using empirical orthogonal functions. J Climate 9:1403–1420

    Article  Google Scholar 

  • Vera C, Silvestri G, Barros V, Carril A (2004) Differences in El Niño response over the Southern Hemisphere. J Climate 17:1741–1753

    Article  Google Scholar 

  • Wilks DS (1995) Statistical methods in the atmospheric sciences. Academic, NY, p 468

    Google Scholar 

  • Zebiak SE (1993) Air-sea interactions in the equatorial Atlantic region. J Climate 6:1567–1586

    Article  Google Scholar 

  • Zhang Y, Wallace JM, Battisti D (1997) ENSO-like interdecadal variability: 1900–93. J Climate 10:1004–1020

    Article  Google Scholar 

  • Zhou J, Lau KM (2001) Principal modes of interannual and decadal variability of summer rainfall over South America. Int J Climatol 21:1623–1644. doi:10.1002/joc.700

    Article  Google Scholar 

  • Zhou YP, Higgins RW, Kim H-K (2001) Relationships between El Niño-Southern Oscillation and the Arctic Oscillation: a Climate-Weather Link. NCEP/Climate Prediction Center Atlas 8 [Available online at http://www.cpc.ncep.noaa.gov/products/outreach/atlas.shtml]

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Acknowledgments

We thank the editor and the constructive comments of the anonymous reviewers. We also thank M. Chen and collaborators for providing rainfall data and the Climate Prediction Center (CPC/NCEP/NWS) and UK Meteorological Office Hadley Centre for providing the datasets. This work was supported by “Fundação de Amparo à Pesquisa do Estado de São Paulo” (FAPESP 05/01804-0). AD acknowledges the support from FAPESP, from CNPq, and from the Spanish Ministry from Science and Innovation. TA acknowledges the partial support from CNPq/INCT of Climate Change, CAPES, and he has also received funding from the European Community’s Seventh Framework Programme (FP7/2007-2013) under Grant Agreement No. 212492 (CLARIS LPB. A Europe-South America Network for Climate Change Assessment and Impact Studies in La Plata Basin).

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Authors and Affiliations

  1. Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo, Rua do Matão, 1226, Cidade Universitária, São Paulo, SP, 05508-090, Brazil

    Gyrlene Aparecida Mendes da Silva & Tércio Ambrizzi

  2. EPhysLab, Facultade de Ciencias, Universidad de Vigo, Ourense, Spain

    Anita Drumond

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  1. Gyrlene Aparecida Mendes da Silva
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Correspondence to Gyrlene Aparecida Mendes da Silva.

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Silva, G.A.M., Drumond, A. & Ambrizzi, T. The impact of El Niño on South American summer climate during different phases of the Pacific Decadal Oscillation. Theor Appl Climatol 106, 307–319 (2011). https://doi.org/10.1007/s00704-011-0427-7

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  • DOI: https://doi.org/10.1007/s00704-011-0427-7

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