Malaria epidemics and the influence of the tropical South Atlantic on the Indian monsoon

B. A. Cash, X. Rodó, J. Ballester, M. J. Bouma, Andres Baeza-Castro, R. Dhiman, M. Pascual

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The existence of predictability in the climate system beyond the relatively short timescales of synoptic weather has provided significant impetus to investigate climate variability and its consequences for society. In particular, relationships between the relatively slow changes in sea surface temperature (SST) and climate variability at widely removed points across the globe provide a basis for statistical and dynamical efforts to predict numerous phenomena, from rainfall to disease incidence, at seasonal to decadal timescales. We describe here a remote influence, identified through observational analysis and supported through numerical experiments with a coupled atmosphere-ocean model, of the tropical South Atlantic (TSA) on both monsoon rainfall and malaria epidemics in arid northwest India. Moreover, SST in the TSA is shown to provide the basis for an early warning of anomalous hydrological conditions conducive to malaria epidemics four months later, therefore at longer lead times than those afforded by rainfall. We find that the TSA is not only significant as a modulator of the relationship between the monsoon and the El Niño/Southern Oscillation, as has been suggested by previous work, but for certain regions and temporal lags is in fact a dominant driver of rainfall variability and hence malaria outbreaks.

Original languageEnglish (US)
Pages (from-to)502-507
Number of pages6
JournalNature Climate Change
Volume3
Issue number5
DOIs
StatePublished - May 1 2013
Externally publishedYes

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malaria
monsoon
climate
rainfall
sea surface temperature
timescale
disease incidence
Southern Oscillation
incidence
driver
India
Disease
experiment
weather
atmosphere
ocean

ASJC Scopus subject areas

  • Environmental Science (miscellaneous)
  • Social Sciences (miscellaneous)

Cite this

Malaria epidemics and the influence of the tropical South Atlantic on the Indian monsoon. / Cash, B. A.; Rodó, X.; Ballester, J.; Bouma, M. J.; Baeza-Castro, Andres; Dhiman, R.; Pascual, M.

In: Nature Climate Change, Vol. 3, No. 5, 01.05.2013, p. 502-507.

Research output: Contribution to journalArticle

Cash, BA, Rodó, X, Ballester, J, Bouma, MJ, Baeza-Castro, A, Dhiman, R & Pascual, M 2013, 'Malaria epidemics and the influence of the tropical South Atlantic on the Indian monsoon', Nature Climate Change, vol. 3, no. 5, pp. 502-507. https://doi.org/10.1038/nclimate1834
Cash, B. A. ; Rodó, X. ; Ballester, J. ; Bouma, M. J. ; Baeza-Castro, Andres ; Dhiman, R. ; Pascual, M. / Malaria epidemics and the influence of the tropical South Atlantic on the Indian monsoon. In: Nature Climate Change. 2013 ; Vol. 3, No. 5. pp. 502-507.
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