Long-term trends in rainfall and temperature using high-resolution climate datasets in East Africa

Scientific Reports
Solomon H GebrechorkosChristian Bernhofer

Abstract

Detecting changes in climate is a prerequisite for a better understanding of the climate and developing adaptation and mitigation measures at a regional and local scale. In this study long-term trends in rainfall and maximum and minimum temperature (T-max and T-min) were analysed on seasonal and annual time scales for East Africa. High resolution gridded rainfall (1981-2016) and temperature (1979-2010) data from international databases like the Climate Hazards Group are used. Long-term seasonal trend analysis shows a non-significant (except for small areas), decreasing (increasing) trend in rainfall in eastern (western) parts of Ethiopia and Kenya and a decreasing trend in large parts of Tanzania during the long rainy season. On the other hand, a non-significant increasing trend in large parts of the region is observed during the short rain season. With regard to annual trends, results largely confirm seasonal analyses: only a few significant trends in rainfall, but significant increasing trends in T-max (up to 1.9 °C) and T-min (up to 1.2 °C) for virtually the whole region. Our results demonstrate the need and added value of analysing climate trends based on data with high spatial resolution allowing sustainable adaptation mea...Continue Reading

References

Aug 18, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Jemma GornallAndrew Wiltshire
Nov 26, 2015·Science Advances·Jessica E TierneyPeter B deMenocal
Aug 22, 2017·The Science of the Total Environment·Freddie MpelasokaAyalsew Zerihun
Aug 23, 2017·The Science of the Total Environment·Trevon L FullerThomas B Smith

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Citations

Sep 28, 2021·Frontiers in Genetics·Fasil Getachew KebedeJohn W M Bastiaansen

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Software Mentioned

ERA
Interim
CMSAF ( The Satellite Application Facility on Climate Monitori...
OR
open R
CHIRPS
CMSAF
R
Observational Reanalysis Hybrid OR
Observational - Reanalysis Hybrid

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