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Open AccessArticle

Study on Temporal Variations of Surface Temperature and Rainfall at Conakry Airport, Guinea: 1960–2016

1
Laboratoire de l’Atmosphère et des Cyclones, UMR 8105, CNRS, Université de La Réunion, Météo-France, 97490 Réunion, France
2
Centre de Recherche Scientifique de Conakry Rogbane, Conakry 1615, Guinée
3
Direction Nationale de la Météorologie de Guinée, Conakry 566, Guinée
4
School of Chemistry and Physics, University of KwaZulu Natal, Durban 4000, South Africa
5
Department of Geography, University of Zululand, KwaDlangezwa 3886, South Africa
6
Laboratoire Atmosphère, Milieux, Observations Spatiales/Institut Pierre-Simon-Laplace, UVSQ Université Paris-Saclay, Sorbonne Université, CNRS, 78280 Guyancourt, France
*
Author to whom correspondence should be addressed.
Climate 2019, 7(7), 93; https://doi.org/10.3390/cli7070093
Received: 15 March 2019 / Revised: 25 June 2019 / Accepted: 3 July 2019 / Published: 18 July 2019
(This article belongs to the Special Issue Climate variability and change in the 21th Century)
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Abstract

The monthly averaged data time series of temperatures and rainfall without interruption of Conakry Airport (9.34° N 13.37° W, Guinea) from 1960 to 2016 were used. Inter-annual and annual changes in temperature and rainfall were investigated. Then, different models: Mann-Kendall Test, Multi-Linear-Regression analysis, Theil-Sen’s slope estimates and wavelet analysis where used for trend analysis and the dependency with these climate forcings. Results showed an increase in temperature with semi-annual and annual cycles. A sharp and abrupt rise in the temperature in 1998 was found. The results of study have shown increasing trends for temperature (about 0.21°/year). A decrease in rainfall (about −8.14 mm/year) is found since the end of 1960s and annual cycle with a maximum value of about 1118.3 mm recorded in August in average. The coherence between the two parameters and climate indices: El Niño 3.4, Atlantic Meridional Mode, Tropical Northern Atlantic and Atlantic Niño, were investigated. Thus, there is a clear need for increased and integrated research efforts in climate parameters variations to improve knowledge in climate change. View Full-Text
Keywords: temperature; rainfall; climate indices; wavelet; trend analysis; climate change and Conakry temperature; rainfall; climate indices; wavelet; trend analysis; climate change and Conakry
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Loua, R.T.; Bencherif, H.; Mbatha, N.; Bègue, N.; Hauchecorne, A.; Bamba, Z.; Sivakumar, V. Study on Temporal Variations of Surface Temperature and Rainfall at Conakry Airport, Guinea: 1960–2016. Climate 2019, 7, 93.

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