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2013 Fiscal Year Final Research Report

Climate variability of the Indian Ocean and malaria resurgence in the east African highlands

Research Project

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Project/Area Number 24651027
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Environmental impact assessment/Environmental policy
Research InstitutionNagasaki University

Principal Investigator

HASHIZUME Masahiro  長崎大学, 熱帯医学研究所, 教授 (30448500)

Project Period (FY) 2012-04-01 – 2014-03-31
Keywords疫学 / 気候変動 / マラリア / インド洋 / エルニーニョ / 時系列解析 / アフリカ / ケニア
Research Abstract

The El-Nino-Southern Oscillation (ENSO) has been connected to malaria epidemics in the 1990s in the east African highlands. We show that the Indian Ocean Dipole (IOD), a coupled ocean-atmosphere interaction related to temperature changes 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), an indicator of the east-west temperature gradient across the tropical Indian Ocean, in the 1990s in three highland localities. Conversely, we found a less pronounced coherence between malaria and DMI in lowland localities. The differences between highland and lowland sites may reflect the effects of mesoscale systems generated by Lake Victoria on its climate basin and indicate the sensitivity of the local climate to a strong IOD.

  • Research Products

    (5 results)

All 2014 2013 Other

All Journal Article (2 results) Presentation (1 results) Book (1 results) Remarks (1 results)

  • [Journal Article] 東アフリカの高地マラリアとインド洋ダイポールモード現象2014

    • Author(s)
      橋爪真弘
    • Journal Title

      化学療法の領域

      Volume: 30巻3号 Pages: 113-120

  • [Journal Article] 地球温暖化と熱帯感染症2014

    • Author(s)
      橋爪真弘
    • Journal Title

      小児感染免疫

      Volume: 26巻1号 Pages: 54-58

  • [Presentation] Indian Ocean Dipole and Infectious Disease Dynamics in Tropical Asia and Africa2014

    • Author(s)
      Hashizume M
    • Organizer
      5th Asia-Pacific Conference on Public Health
    • Place of Presentation
      Seoul Olympic Parktel, Seoul, Korea
    • Year and Date
      20140410-11
  • [Book] Precipitation and Flood Hazards : Health Effects, Risks, and Impacts. Climate Vulnerability : Understanding and Addressing Threats to Essential Resources2013

    • Author(s)
      Hashizume M(R Pielke, Sr. (Eds))
    • Total Pages
      115-124
    • Publisher
      Elsevier Inc., Academic Press
  • [Remarks]

    • URL

      http://www.tm.nagasaki-u.ac.jp/pediatric/index.html

URL: 

Published: 2015-06-25  

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