Skip to main content

Advertisement

Log in

Characterizing the exceptional 2014 drought event in São Paulo by drought period length

  • Published:
Climate Dynamics Aims and scope Submit manuscript

Abstract

In the last decade, the southeast region of Brazil has been suffering severe water shortages. Here, we propose to compute the expected drought period length to characterize the drought events in the region of São Paulo. We report the unique properties of the exceptional drought event during the austral summer 2014 by showing the differences and similarities to the very dry season in 2001 and the mild dry seasons in 2006 and 2015. Furthermore, we investigate the correlations of the abnormal precipitation deficit with the ocean and atmospheric patterns. In comparison to other drought events, we validate the hypothetical mechanism that underlies the exceptional drought 2014: (1) The existence of an anomalous high pressure center in the area acts as a blocking mechanism that prevents moisture transport from the Amazon and passage of cold front systems from south Brazil. This blocking high has been observed in all dry seasons considered, with much larger magnitude in 2014. (2) The much faster increasing trend of the anomalous sea surface temperature acts as a strong feedback which intensified the extreme climate conditions. The unprecedented increasing trend of the SST in 2014 was not observed in other climate variables representing a high pressure center. Therefore, we conclude that the exceptional drought 2014 was enhanced by the feedback mechanism of anomalous warming of SST in the South Atlantic Oceans, which was resulted from the anomalous high pressure.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

  • Cavalcanti I, Kouksy V (2001) Drought in Brazil during summer and fall of 2001 and associated circulation features. Climanalise 1:1–10. http://climanalise.cptec.inpe.br/~rclimanl/revista/pdf/criseing.pdf

  • Coelho CAS, Cardoso DHF, Firpo MAF (2016a) Precipitation diagnostics of an exceptionally dry event in São Paulo, Brazil. Theor Appl Climatol 125(3):769–784. doi:10.1007/s00704-015-1540-9

    Article  Google Scholar 

  • Coelho CAS, de Oliveira CP, Ambrizzi T, Reboita MS, Carpenedo CB, Campos JLPS, Tomaziello ACN, Pampuch LA, Custódio MdS, Dutra LMM, Da Rocha RP, Rehbein A (2016b) The 2014 southeast Brazil austral summer drought: regional scale mechanisms and teleconnections. Clim Dyn 46(11):3737–3752. doi:10.1007/s00382-015-2800-1

    Article  Google Scholar 

  • Drumond ARdM, Ambrizzi T (2005) The role of SST on the South American atmospheric circulation during January, February and March 2001. Clim Dyn 24(7):781–791. doi:10.1007/s00382-004-0472-3

    Article  Google Scholar 

  • Dufek SA, Ambrizzi T (2008) Precipitation variability in São Paulo state, Brazil. Theor Appl Climatol 93(3):167–178. doi:10.1007/s00704-007-0348-7

    Article  Google Scholar 

  • Herdies DL, da Silva A, Silva Dias MAF, Nieto Ferreira R (2002) Moisture budget of the bimodal pattern of the summer circulation over South America. J Geophys Res 107(D20):LBA 42–1–LBA 42–10. doi:10.1029/2001JD000997

    Article  Google Scholar 

  • Luiz Silva W, Nascimento M, Menezes W (2015) Atmospheric blocking in the South Atlantic during the summer 2014: a synoptic analysis of the phenomenon. Atmos Clim Sci 5:386–393. doi:10.4236/acs.2015.54030

    Google Scholar 

  • Marengo JA, Nobre CA, Seluchi ME, Cuartas A, Alves LM, Mendiondo EM, Obregón G, Sampaio G (2015) A seca e a crise hídrica de 2014–2015 em São Paulo. Revista USP-São Paulo 106:31–44

    Article  Google Scholar 

  • Nobre C, Marengo J, Seluchi ML, Cuartas Alves L (2016) Some characteristics and impacts of the drought and water crisis in southeastern Brazil during 2014 and 2015. J Water Resour Prot 8:252–262. doi:10.4236/jwarp.2016.82022

    Article  Google Scholar 

  • Pampuch LA, Drumond A, Gimeno L, Ambrizzi T (2016) Anomalous patterns of SST and moisture sources in the South Atlantic ocean associated with dry events in southeastern Brazil. Int J Climatol 36:1–16. doi:10.1002/joc.4679

    Article  Google Scholar 

  • Rao VB, Franchito SH, Santo CME, Gan MA (2016) An update on the rainfall characteristics of Brazil: seasonal variations and trends in 1979–2011. Int J Climatol 36(1):291–302. doi:10.1002/joc.4345

    Article  Google Scholar 

  • Reynolds RW, Smith TM, Liu C, Chelton DB, Casey KS, Schlax MG (2007) Daily high-resolution-blended analyses for sea surface temperature. J Clim 20:5473–5496

    Article  Google Scholar 

  • Seth A, Fernandes K, Camargo SJ (2015) Two summers of São Paulo drought: origins in the western tropical pacific. Geophys Res Lett 42(24):10816–10823. doi:10.1002/2015GL066314

    Article  Google Scholar 

  • Shinomoto S, Shima K, Tanji J (2003) Differences in spiking patterns among cortical neurons. Neural Comput 15(12):2823–2842. doi:10.1162/089976603322518759

    Article  Google Scholar 

  • Zou Y, Small M, Liu ZH, Kurths J (2014) Complex network approach to characterize the statistical features of the sunspot series. New J Phys 16(1):013–051

    Article  Google Scholar 

  • Zou Y, Macau EEN, Sampaio G, Ramos AMT, Kurths J (2016) Do the recent severe droughts in the Amazonia have the same period of length? Clim Dyn 46:3279–3285. doi:10.1007/s00382-015-2768-x

    Article  Google Scholar 

Download references

Acknowledgements

This work was partially supported by Natural Science Foundation of Shanghai (Grant no. 17ZR1444800) and the DFG/FAPESP (Grant no. IRTG 1740/TRP 2011/50151-0, and 2015/50122-0). All data for this paper is properly cited and referred to in the reference list.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Yong Zou.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Zou, Y., Macau, E.E.N., Sampaio, G. et al. Characterizing the exceptional 2014 drought event in São Paulo by drought period length. Clim Dyn 51, 433–442 (2018). https://doi.org/10.1007/s00382-017-3932-2

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00382-017-3932-2

Keywords

Navigation