Climate Dynamics

, Volume 45, Issue 9–10, pp 2425–2442 | Cite as

The impact of ENSO on Southern African rainfall in CMIP5 ocean atmosphere coupled climate models

Article

Abstract

We study the ability of 24 ocean atmosphere global coupled models from the Coupled Model Intercomparison Project 5 (CMIP5) to reproduce the teleconnections between El Niño Southern Oscillation (ENSO) and Southern African rainfall in austral summer using historical forced simulations, with a focus on the atmospheric dynamic associated with El Niño. Overestimations of summer rainfall occur over Southern Africa in all CMIP5 models. Abnormal westward extensions of ENSO patterns are a common feature of all CMIP5 models, while the warming of the Indian Ocean that happens during El Niño is not correctly reproduced. This could impact the teleconnection between ENSO and Southern African rainfall which is represented with mixed success in CMIP5 models. Large-scale anomalies of suppressed deep-convection over the tropical maritime continent and enhanced convection from the central to eastern Pacific are correctly simulated. However, regional biases occur above Africa and the Indian Ocean, particularly in the position of the deep convection anomalies associated with El Niño, which can lead to the wrong sign in rainfall anomalies in the northwest part of South Africa. From the near-surface to mid-troposphere, CMIP5 models underestimate the observed anomalous pattern of pressure occurring over Southern Africa that leads to dry conditions during El Niño years.

Keywords

Southern Africa Rainfall El Niño Southern Oscillation (ENSO) Coupled model CMIP5 Teleconnection 

References

  1. AchutaRao K, Sperber KR (2006) ENSO simulation in coupled ocean–atmosphere models: are the current models better? Clim Dyn 27:1–15CrossRefGoogle Scholar
  2. Ashfaq M, Skinner CB, Diffenbaugh NS (2010) Influence of SST biases on future climate change projections. Clim Dyn 36:1303–1319CrossRefGoogle Scholar
  3. Bellenger H, Guilyardi E, Leloup J, Lengaigne M, Vialard J (2013) ENSO representation in climate models: from CMIP3 to CMIP5. Clim Dyn 42:1999–2018CrossRefGoogle Scholar
  4. Boulard D, Pohl B, Crétat J, Vigaud N (2012) Downscaling large-scale climate variability using a regional climate model: the case of ENSO over Southern Africa. Clim Dyn 40:1141–1168CrossRefGoogle Scholar
  5. Cai W, Sullivan A, Cowan T (2009) Rainfall teleconnections with Indo-Pacific variability in the WCRP CMIP3 models. J Clim 22:5046–5071CrossRefGoogle Scholar
  6. Camberlin P, Janicot S, Poccard I (2001) Seasonnality and atmospheric dynamics of the teleconnection between African rainfall and tropical sea surface temperature Atlantic vs. ENSO. Int J Clim 21:973–1005CrossRefGoogle Scholar
  7. Capotondi A, Wittenberg A, Masina S (2006) Spatial and temporal structure of tropical pacific interannual variability in 20th century coupled simulations. Ocean Model 15:274–298CrossRefGoogle Scholar
  8. Cook KH (2000) The South Indian convergence zone and interannual rainfall variability over Southern Africa. J Clim 13:3789–3804CrossRefGoogle Scholar
  9. Cook KH (2001) A Southern hemisphere wave response to ENSO with implications for southern Africa precipitation. J Atmos Sci 15:2146–2162CrossRefGoogle Scholar
  10. Cook KH (2004) Wet and dry spells within particularly wet and dry summers in the South African summer rainfall region. Clim Res 26:17–31CrossRefGoogle Scholar
  11. Crétat J, Richard Y, Pohl B, Rouault M, Reason CJC, Fauchereau N (2010) Recurrent daily rainfall patterns over South Africa and associated dynamics during the core of the austral summer. Int J Climatol 32:261–273CrossRefGoogle Scholar
  12. Crétat J, Macron C, Pohl B, Richard Y (2011) Quantifying internal variability in a regional climate model: a case study for Southern Africa. Clim Dyn 37:1335–1356CrossRefGoogle Scholar
  13. Crétat J, Pohl B, Richard Y, Drobinski P (2012) Uncertainties in simulating regional climate of Southern Africa: sensitivity to physical parametrizations using WRF. Clim Dyn 38:613–634CrossRefGoogle Scholar
  14. Delecluse P, Davey MK, Kitamura Y, Philander SGH, Suarez M, Bengtsson L (1998) Coupled general circulation modeling of the tropical Pacific. J Geophys Res 103:14357–14373CrossRefGoogle Scholar
  15. Fauchereau N, Pohl B, Reason CJC, Rouault M, Richard Y (2009) Recurrent daily OLR patterns in the Southern Africa/Southwest Indian Ocean region, implications for South African rainfall and teleconnections. Clim Dyn 32:575–591CrossRefGoogle Scholar
  16. Favre A, Hewitson B, Tadross M, Lennard C, Cerezo-Mota R (2012) Relationships between cut-off lows and the semiannual and southern oscillations. Clim Dyn 38:1473–1487CrossRefGoogle Scholar
  17. Federov AV, Philander SG (2001) A stability analysis of the tropical ocean–atmosphere interactions: bridging measurements of, and theory for El Niño. J Clim 14:3086–3101CrossRefGoogle Scholar
  18. Guilyardi E, Braconnot P, Jin FF, Kim ST, Kolasinski M, Li T, Musat I (2009) Atmosphere feedbacks during ENSO in coupled GCM with a modified atmospheric convection scheme. J Clim 22:5698–5718CrossRefGoogle Scholar
  19. Harris I, Jones PD, Osborn TJ, Lister DH (2014) Updated high-resolution grids of monthly climatic observations—the CRU TS3.10 dataset. Int J Clim 34:623–642CrossRefGoogle Scholar
  20. Harrison MSJ (1984) A generalised classification of South African summer rain bearing synoptic systems. J Climatol 4:547–560CrossRefGoogle Scholar
  21. Harrison MSJ (1986) A synoptic climatology of South African rainfall variations. PhD thesis, University of Witwatersrand, Johannesburg, 341pGoogle Scholar
  22. Hart NCG, Reason CJC, Fauchereau N (2010) Tropical–extratropical interactions over southern Africa: three cases of heavy summer season rainfall. Mon Weather Rev 138:2608–2623CrossRefGoogle Scholar
  23. Hart NCG, Reason CJC, Fauchereau N (2012) Building a tropical extratropical cloud band metbot. Mon Weather Rev 140:4005–4016CrossRefGoogle Scholar
  24. Hart NCG, Reason CJC, Fauchereau N (2013) Cloud bands over southern Africa: seasonality, contribution to rainfall variability, and modulation by the MJO. Clim Dyn 41:1199–1212CrossRefGoogle Scholar
  25. Joly M, Voldoire A, Douville H, Terray P, Royer J-F (2007) African monsoon teleconnections with tropical SSTs: validation and evolution in a set of IPCC4 simulations. Clim Dyn 29:1–20CrossRefGoogle Scholar
  26. Kalnay E, Kanamistsu M, Kistler R, Collins W, Deaven D, Gandin L, Iredell M, Saha S, White G, Woolen J, Zhu Y, Chelliah M, Ebisuzaki W, Higgins W, Janowiak J, Mo KC, Ropelewski C, Wang J, Leetma R, Reynolds R, Jenne R, Joseph D (1996) The NCEP/NCAR 40-year reanalysis project. Bull Am Meteorol Soc 77:437–471CrossRefGoogle Scholar
  27. Klein SA, Soden BJ, Lau NC (1999) Remote sea surface variations during ENSO: evidence for a tropical atmospheric bridge. J Clim 12:917–932CrossRefGoogle Scholar
  28. Kruger AC (1999) The influence of the decadal-scale variability of summer rainfall on the impact of El-Niño and La Niña events in South Africa. Int J Clim 19:59–68CrossRefGoogle Scholar
  29. Landman WA, Beraki A (2012) Multi-model forecast skill for mid-summer rainfall over southern Africa. Int J Clim 32:303–314CrossRefGoogle Scholar
  30. Langenbrunner B, Neelin DJ (2013) Analyzing ENSO teleconnections in CMIP models as a measure of model fidelity in simulating precipitation. J Clim 26:4431–4446CrossRefGoogle Scholar
  31. Latif M, Sperber K, Arblaster J, Braconnot P, Chen D, Colman A, Cubasch U, Cooper C, Delecluse P, DeWitt D, Fairhead L, Flato G, Hogan T, Ji M, Kimoto M, Kitoh A, Knutson T, Le Treut H, Li T, Manabe S, Marti O, Mechoso C, Meehl G, Power S, Roeckner E, Sirven J, Terray L, Vintzileos A, VoB R, Wang B, Washington W, Yoshikawa I, Yu J, Zebiak S (2001) ENSIP: the El Niño simulation intercomparison project. Clim Dyn 18:255–276CrossRefGoogle Scholar
  32. Lin J-L (2007) The double-ITCZ problem in IPCC AR4 coupled GCMs: ocean–atmosphere feedback analysis. J Clim 20:4497–4525CrossRefGoogle Scholar
  33. Lindesay JA (1988) South African rainfall, the souther oscillation and a souther hemisphere semi-annual cycle. J Climatol 8:17–30CrossRefGoogle Scholar
  34. Lloyd J, Guilyardi E, Weller H, Slingo J (2009) The role of atmosphere feedbacks during ENSO in the CMIP3 models. Atmos Sci Lett 10:170–176CrossRefGoogle Scholar
  35. Lyon B, Mason SJ (2007) The 1997–98 summer season in southern Africa. Part I: observations. J Clim 20:5134–5148CrossRefGoogle Scholar
  36. Macron C, Pohl B, Richard Y (2014) How do tropical temperate troughs form and develop over Southern Africa? J Clim 27:1633–1647CrossRefGoogle Scholar
  37. Mason SJ, Jury M (1997) Climatic variability and change over the Southern Africa: a reflection on underlying processes. Prog Phys Geogr 21:23–50CrossRefGoogle Scholar
  38. Michael J-P, Misra V, Chassignet EP (2013) The El Niño and Southern Oscillation in the historical centennial integrations of the new generation of climate models. Reg Environ Change 13:121–130CrossRefGoogle Scholar
  39. Mulenga HM, Rouault M, Reason CJC (2003) Dry summers over north-eastern South Africa and associated circulation anomalies. Clim Res 25:29–41CrossRefGoogle Scholar
  40. Nicholson SE (1997) An analysis of the ENSO signal in the tropical Atlantic and western Indian oceans. Int J Clim 17:345–375CrossRefGoogle Scholar
  41. Nicholson SE, Kim J (1997) The relationship of the El Niño–Southern Oscillation to African rainfall. Int J Clim 17:117–135CrossRefGoogle Scholar
  42. Phillipon N, Rouault M, Richard Y, Favre A (2012) The influence of ENSO on winter rainfall in South Africa. Int J Clim 32:2333–2347CrossRefGoogle Scholar
  43. Pohl B, Fauchereau N, Richard Y, Rouault M, Reason CJC (2009) Interactions between synoptic, intraseasonal and interannual convective variability over Southern Africa. Clim Dyn 33:1033–1050CrossRefGoogle Scholar
  44. Preisendorfer RW (1988) Principal component analysis in meteorology and oceanography. Elsevier, AmsterdamGoogle Scholar
  45. Rasmussen EM (1991) Observational aspects of ENSO cycle teleconnections. In: Glantz MH et al (eds) Teleconnection linking worldwide climate anomalies: scientific basis and societal impact. Cambridge University Press, New York, pp 309–343Google Scholar
  46. Ratna SB, Behera S, Ratnam JV, Takahashi K, Yamagata T (2013a) An index for tropical temperate troughs over southern Africa. Clim Dyn 41:421–441CrossRefGoogle Scholar
  47. Ratna SB, Ratnam JV, Behera SK, Rautenbach CJdeW, Ndarana T, Takahashi K, Yamagata T (2013b) Performance assessment of three convective parameterization schemes in WRF for downscaling summer rainfall over South Africa. Clim Dyn 42:2931–2953CrossRefGoogle Scholar
  48. Ratnam JV, Behera S, Masumoto Y, Takahashi K, Yamagata T (2012) A simple regional coupled model experiment for summer-time climate simulation over southern Africa. Clim Dyn 39:2207–2217CrossRefGoogle Scholar
  49. Ratnam JV, Behera S, Ratna SB, Rautenbach H, Lennard C, Luo JJ, Masumoto Y, Takahashi K, Yamagata T (2013) Dynamical downscaling of austral summer climate forecasts over southern Africa using a simple regional coupled model. J Clim 26:6015–6032CrossRefGoogle Scholar
  50. Ratnam JV, Behera SK, Masumoto Y, Yamagata T (2014) Remote effects of El Niño and Modoki events on the austral summer precipitation of Southern Africa. J Clim 27:3802–3815CrossRefGoogle Scholar
  51. Richard Y, Trzaska S, Roucou P, Rouault M (2000) Modification of the Southern African rainfall variability/El Niño southern oscillation relationship. Clim Dyn 16:883–895CrossRefGoogle Scholar
  52. Richard Y, Fauchereau N, Poccard I, Rouault M, Trzaska S (2001) XXth century droughts in Southern Africa: spatial and temporal variability, teleconnections with oceanic and atmospheric conditions. Int J Clim 21:873–885CrossRefGoogle Scholar
  53. Ropelewski CF, Halpert MS (1987) Global and regional scale precipitation patterns associated with the El Niño/Southern Oscillation. Mon Weather Rev 115:1606–1626CrossRefGoogle Scholar
  54. Ropelewski CF, Halpert MS (1989) Precipitation patterns associated with the high indices phase of the southern oscillation. J Clim 2:268–284CrossRefGoogle Scholar
  55. Rouault M, Richard Y (2005) Intensity and spatial extent of droughts in Southern Africa. Geophys Res Lett 32:L15702. doi:10.1029/2005GL022436 CrossRefGoogle Scholar
  56. Rouault M, Florenchie P, Fauchereau N, Reason CJC (2003) South East tropical Atlantic warm events and southern African rainfall. Geophys Res Lett 30:8009. doi:10.1029/2002GL014840 CrossRefGoogle Scholar
  57. Rouault M, Sen Roy S, Balling JRC (2013) The diurnal cycle of rainfall in South Africa in the austral summer. Int J Clim 33:770–777CrossRefGoogle Scholar
  58. Rowell DP (2013) Simulating SST teleconnections to Africa: what is the state of the art? J Clim 26:5397–5418CrossRefGoogle Scholar
  59. Saji N, Xie S-P, Yamagata T (2006) Tropical Indian Ocean variability in the IPCC twentieth-century climate simulations. J Clim 19:4397–4417CrossRefGoogle Scholar
  60. Smith T, Reynolds R, Peterson TC, Lawrimore J (2008) Improvements to NOAA’s historical merged land–ocean surface temperature analysis (1880–2006). J Clim 21:2283–2296CrossRefGoogle Scholar
  61. Tatebe H, Ishii M, Mochizuki T, Chikamoto Y, Sakamoto T, Komuro Y, Mori M, Yasunaka S, Watanabe M, Ogochi K, Suzuk T, Nishimura T, Kimoto M (2012) Initialization of the climate model MIROC for decadal prediction with hydrographic data assimilation. J Meteorol Soc Jpn 90A:275–294CrossRefGoogle Scholar
  62. Taylor KE (2001) Summarizing multiple aspects of model performance in a single diagram. J Geophys Res Atmos 106:7183–7192CrossRefGoogle Scholar
  63. Taylor KE, Stouffer RJ, Meehl GA (2012) An overview of CMIP5 and the experiment design. Bull Am Meteorol Soc 93:485–498CrossRefGoogle Scholar
  64. Todd MC, Washington R (1999) Circulation anomalies associated with tropical-temperate troughts in southern Africa and the southwest Indian Ocean. Clim Dyn 15:937–951CrossRefGoogle Scholar
  65. Todd MC, Washington R, Palmer PI (2004) Water vapour transport associated with tropical-temperate trough systems over Southern Africa and the southwest Indian Ocean. Int J Clim 24:555–568CrossRefGoogle Scholar
  66. Tyson PD (1986) Climatic change and variability in Southern Africa. Oxford University Press, Cape TownGoogle Scholar
  67. Vigaud N, Richard Y, Rouault M, Fauchereau N (2007) Water vapour transport from the tropical Atlantic and summer rainfall in tropical southern Africa. Clim Dyn 28(2–3):113–123Google Scholar
  68. Vigaud N, Richard Y, Rouault M, Fauchereau N (2009) Moisture transport between the South Atlantic Ocean and southern Africa: relationships with summer rainfall and associated dynamics. Clim Dyn 32:113–123CrossRefGoogle Scholar
  69. Vigaud N, Pohl B, Crétat J (2012) Tropical–temperate interactions over Southern Africa simulated by a regional climate model. Clim Dyn 39:2895–2916CrossRefGoogle Scholar
  70. Weare BC (2013) El Niño teleconnections in CMIP5 models. Clim Dyn 41:2165–2177CrossRefGoogle Scholar
  71. Weller E, Cai W (2013) Asymmetry in IOD and ENSO teleconnection in a CMIP5 model ensemble and its relevance to regional rainfall. J Clim 26:5139–5149CrossRefGoogle Scholar
  72. Widlansky MJ, Timmermann A, Stein K, McGregor S, Schneider N, England MH, Lengaigne M, Cai W (2012) Changes in South Pacific rainfall bands in a warming climate. Nat Clim Change 3:417–423CrossRefGoogle Scholar
  73. Wittenberg AT, Rosati A, Lau N-C, Ploshay JJ (2006) GFDL’s CM2 global coupled climate models. Part III: tropical Pacific climate and ENSO. J Clim 19:698–722CrossRefGoogle Scholar
  74. Yang X, DelSole T (2012) Systematic comparison of ENSO teleconnection patterns between models and observations. J Clim 25:425–446CrossRefGoogle Scholar
  75. Yeager S, Karspeck A, Danabasoglu G, Tribbia J, Teng H (2012) A decadal prediction case study: late twentieth-century North Altantic Ocean heat content. J Clim 25:5173–5189CrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.African Climate and Development InitiativeUniversity of Cape TownCape TownRSA
  2. 2.Department of Oceanography, MARE InstituteUniversity of Cape TownCape TownRSA
  3. 3.Nansen-Tutu Center for Marine Environmental ResearchUniversity of Cape TownCape TownRSA

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