Climate change observed on the Senegalese coastline (Dakar region) since 1960 Dakar Region) since 1960: Study of the variability of trends in temperature and rainfall trends

Authors

  • Cheikh FAYE Department of Geography, U.F.R. Sciences and Technologies, UASZ, Laboratoire de Géomatique et d'Environnement, BP 523 Ziguinchor (Senegal)

Keywords:

Climate change, Global warming, Statistical tests, Trend, Rupture

Abstract

Climate change, one of the biggest current concerns of the planet, is characterized by an increase of the average temperature of the
oceans and the atmosphere, the decrease of the rainfall in quantity and in duration, the accentuation of natural disasters ... The global
increase of the temperature of the surface of the globe in the 20th century is of the order of 0.6 in 0.2 °C. All the elements of the climate, the temperatures and the precipitation play a fundamental role in the detection of climate change. This article analyzes the variability and the trends of climate of the city of Dakar, capital of the Republic of Senegal, during the period 1960-2013 from four climatic variables: minimal temperatures, maximal temperatures, average temperatures and totals rainfalls. The results of the analysis indicate a trend on the temperatures quasi-stable from 1960 to 1994. After 1994, year of break, the increase of the temperatures becomes very significant. This increase between 1995-2013 and 1960-1994 is on average 0.9 °C (that is an increase of 3.5 %), was not constant during all the period and is more important on the dry season (1 °C or an increase of 4.4 %) and on the minimal temperatures (1 °C or an increase of 4.9 %). For rainfall, no significant trend was observed, though a decline of 211 mm (or 36.2 %), from 1969, rainfall totals of about - 0.020 mm/year. These different results highlight the presence of climate change in the Dakar area, with multiple consequences for man and the environment.

Vol_11_Issue_1_January_2019

Downloads

Published

01/30/2019

How to Cite

FAYE, C. (2019). Climate change observed on the Senegalese coastline (Dakar region) since 1960 Dakar Region) since 1960: Study of the variability of trends in temperature and rainfall trends. Revue Nature Et Technologie, 11(02), 65–78. Retrieved from https://journals.univ-chlef.dz/index.php/natec/article/view/111

Issue

Vol. 11 No. 02 (2019)

Section

Environmental Sciences

License

Copyright (c) 2019 Nature & Technology Journal

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

  • All publications of "Nature & Technology Journal" are available under CC-BY Creative Commons Attribution 4.0 International which allows sharing, copying, reproduction, distribution, communication, reuse, adaptation by all means, in all formats and under all licenses.
  • Any exploitation of the work or derivative works, including for commercial purposes, is possible. The only obligation is to credit the creators of the authorship of the original works, to indicate the sources and to indicate if modifications were made to the works (obligation of attribution).

This License gives:

  • Nature & Technology Journal the right to develop, promote, distribute and archive the article set cited above (including, without limitation, the right to publish the work in whole or in part in any form whatsoever) and ensure the widest dissemination.
  • The author (s) reserves the right to use all or part of this article, including tables and figures of his own works, providing that the appropriate recognition is given to the publisher as the holder of the copyrights, and the right to make copies of this article for its own use, but not for sale.