Indian Ocean Dipole drives malaria resurgence in East African highlands
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| Autoři: | , , |
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| Médium: | artículo |
| Datum vydání: | 2012 |
| Popis: | Malaria resurgence in African highlands in the 1990s has raised questions about the underlying drivers of the increase in disease incidence including the role of El-Nin ̃o-Southern Oscillation (ENSO). However, climatic anomalies other than the ENSO are clearly associated with malaria outbreaks in the highlands. Here we show that the Indian Ocean Dipole (IOD), a coupled ocean-atmosphere interaction in the Indian Ocean, affected highland malaria re-emergence. Using cross-wavelet coherence analysis, we found four-year long coherent cycles between the malaria time series and the dipole mode index (DMI) in the 1990s in three highland localities. Conversely, we found a less pronounced coherence between malaria and DMI in lowland localities. The highland/lowland contrast can be explained by the effects of mesoscale systems generated by Lake Victoria on its climate basin. Our results support the need to consider IOD as a driving force in the resurgence of malaria in the East African highlands. |
| Země: | Repositorio UNA |
| Instituce: | Universidad Nacional de Costa Rica |
| Repositorio: | Repositorio UNA |
| Jazyk: | Inglés |
| OAI Identifier: | oai:null:11056/23562 |
| On-line přístup: | http://hdl.handle.net/11056/23562 |
| Klíčové slovo: | MALARIA MALARY CAMBIO CLIMATICO CLIMATE CHANGE PARASITIC DISEASES ENFERMEDADES PARASITARIAS |