Cited by 60Climate Change and Health ImpactsMalaria Research and ControlMosquito-borne diseases and control

Incorporating hydrology into climate suitability models changes projections of malaria transmission in Africa

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Smith, M. W., Willis, T., Alfieri, L., James, W. H. M., Trigg, M. A., Yamazaki, D., Hardy, A. J., Bisselink, B. +3 more·2020·Nature Communications

Abstract

Continental-scale models of malaria climate suitability typically couple well-established temperature-response models with basic estimates of vector habitat availability using rainfall as a proxy. Here we show that across continental Africa, the estimated geographic range of climatic suitability for malaria transmission is more sensitive to the precipitation threshold than the thermal response curve applied. To address this problem we use downscaled daily climate predictions from seven GCMs to run a continental-scale hydrological model for a process-based representation of mosquito breeding habitat availability. A more complex pattern of malaria suitability emerges as water is routed through drainage networks and river corridors serve as year-round transmission foci. The estimated hydro-climatically suitable area for stable malaria transmission is smaller than previous models suggest and shows only a very small increase in state-of-the-art future climate scenarios. However, bigger geographical shifts are observed than with most rainfall threshold models and the pattern of that shift is very different when using a hydrological model to estimate surface water availability for vector breeding.

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  • Using a hydrologic model to simulate habitat availability can uncover more complex patterns in climatic suitability for malaria transmission than applying a rainfall threshold.

    “A recent study by Smith et al. demonstrated that using a hydrologic model to simulate habitat availability can uncover more complex patterns in climatic suitability for malaria transmission than applying a rainfall threshold (M. W. Smith et al., 2020).”

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Authors
Smith, M. W., Willis, T., Alfieri, L., James, W. H. M., Trigg, M. A., Yamazaki, D., Hardy, A. J., Bisselink, B., De Roo, A., Macklin, M. G., & Thomas, C. J.
Affiliations
  • University of Leeds (GB)
  • Joint Research Centre (IT)
  • Institute of Industrial Science, The University of Tokyo (JP)
  • Aberystwyth University (GB)
  • University of Lincoln (GB)
Corresponding author
Smith, M. W.
Venue
Nature Communications
Published
2020-08-28
Volume
11
Issue
1
Pages
4353-4353
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3082720702
Cited by
59
References
48
Citations by year
2026: 5 · 2025: 7 · 2024: 9 · 2023: 4 · 2022: 12 · 2021: 17 · 2020: 5
FWCI
3.80
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Lincoln Repository (University of Lincoln) (acceptedVersion)
  • White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
Natural Environment Research Council (NE/P013481/2, NE/P013481/1, NE/H022740/1)
Topics
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Climate Change and Health Impacts
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Malaria Research and Control
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Mosquito-borne diseases and control
Keywords
malaria transmission, climate suitability, hydrological modeling, mosquito breeding sites, precipitation thresholds, thermal response curves, climate change projections, river corridors, drainage network, surface water availability, Africa, vector-borne diseases
MeSH terms
Mosquito Vectors, Africa, Animals, Anopheles, Ecology, Geography, Malaria, Seasons, Temperature, Ecosystem, Rivers, Climate Change, Hydrology, Geographic Mapping

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