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Elevation dependence of the impact of global warming on rainfall variations in a tropical island

Tanteliniaina, MFR, Chen, J, Adyel, Tanveer Mehedi and Zhai, J 2020, Elevation dependence of the impact of global warming on rainfall variations in a tropical island, Water, vol. 12, no. 12, pp. 1-15, doi: 10.3390/w12123582.

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Title Elevation dependence of the impact of global warming on rainfall variations in a tropical island
Author(s) Tanteliniaina, MFR
Chen, J
Adyel, Tanveer MehediORCID iD for Adyel, Tanveer Mehedi orcid.org/0000-0001-5940-5406
Zhai, J
Journal name Water
Volume number 12
Issue number 12
Article ID 3582
Start page 1
End page 15
Total pages 15
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2020-12-01
ISSN 2073-4441
Keyword(s) Science & Technology
Life Sciences & Biomedicine
Physical Sciences
Environmental Sciences
Water Resources
Environmental Sciences & Ecology
global warming
temperature
rainfall
elevation
tropical climate
Madagascar
YELLOW-RIVER BASIN
CLIMATE-CHANGE
WAVELET TRANSFORM
TEMPERATURE VARIABILITY
WATER-RESOURCES
PRECIPITATION
AFRICA
TRENDS
VULNERABILITY
REGIONS
Summary Due to their vulnerability, understanding the impacts of global warming on rainfall is important for a tropical country and islands. This research aimed to assess the impact of global warming on rainfall in Madagascar, using the Mann-Kendall test, continuous wavelet transform, and polynomial regression. The result showed that the annual, seasonal maximum, and minimum temperature increased, while elevation amplified the increase of maximum temperature. Different trends in rainfall were found in the 22 regions of Madagascar but in general, the increasing trend in rainfall was prominent at a higher elevation than lower elevation. The annual rainfall decreased up to −5 mm per year for the regions located below 450 m of altitude while increased up to +5 mm per year above 500 m. We found that the wet becomes wetter with an important increase in rainfall in summer and the increase in temperature influenced the rainfall. The annual rainfall increased with temperature and elevation. However, if the increase in temperature was more than 0.03 °C per year, the annual rainfall increased regardless of elevation. The knowledge of the elevation dependence of the impact of warming on rainfall is important for water resources management and climate change adaptation strategies, especially for island nations and African countries.
Language eng
DOI 10.3390/w12123582
Indigenous content off
HERDC Research category C1.1 Refereed article in a scholarly journal
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30150134

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.