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This article provides an in-depth look at all aspects of the climate of the Sahel, including the pervasive dust in the Sahelian atmosphere. Emphasis is on two aspects: West African monsoon and the region’s rainfall regime.
warm tropical climate. Below that, sub-humid-warm tropics can be found in Guinea, the south of Burkina Faso, Nigeria (and small parts of Chad) as well as in northern Cameroon. Finally, the southern parts of Guinea, Nigeria and Cameroon have a humid-warm tropical climate. The Sahel is irrigated by 11 main rivers which are part of the
Apr 27, 2024 · No month has an average temperature below 18 o C (64.4 o F) and many places have consecutive average monthly temperatures in the mid 30 o s Celsius (90 o F). Daytime temperatures can reach 50 o C (120 o F) in low elevation inland deserts.
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- Pooled Model with Heterogeneous Coefficients
- Temperature
- Precipitation
The estimation results are presented in Table 2. For each indicator, we provide at the bottom of the table the results of the homogeneity tests: homogeneity of intercept across countries (H0 : α1i = α1) and homogeneity of slopes across countries (H0 : α2i = α2). The null hypothesis is rejected for all climate variables meaning that both the interce...
The graphs (Figs. 2, 3, 4, 5, 6, and 7in the online appendix) provide a graphical overview of the evolution of the temperature over the period 1901 and 2016 in the Sahelian countries. These graphical representations concern the median, minimum, and maximum temperatures, respectively, during the dry and rainy seasons. Looking first at temperature in...
Precipitation is the second variable chosen to characterize climate change in the Sahelian countries. Precipitation and temperature are strongly bound in this area. Rainfall sometimes depends on temperature during the rainy seasons (Nicholson 2013). We focus on the annual precipitations, i.e., the total annual quantity of rain since the important i...
- Oudah Yobom
- oudah.yobom@inra.fr
- 2020
The Sahel is a transition zone between the pure desert of Sahara and the woody savanna of the Sudanean zone further south. It is a very fragile ecosystem where the signals of climate change and climate variability have been most apparent, with unprecedented climate variability over the last four decades (Hiernaux et al., 2009 ; Kaptué ...
- Cheikh Mbow
- 2017
Dec 15, 2022 · The MME mean increase ratio of Sahel summer rainfall in the past warming climate reaches up to about 19.6% per one degree Celsius of global warming (Fig. 2b), which is almost twice or three times as large as that in the projected future warming climate (about 7.7% per one degree Celsius of global warming in MME mean; Fig. 2d).
Jun 11, 2013 · News. A Wetter Sahel, But Will It Last? Authored by Francesco Fiondella on June 11, 2013. The Sahel is a semiarid region south of the Sahara Desert that stretches from the Atlantic Ocean to the Red Sea. In the 1970s and 1980s it was hit by a series of persistent droughts and recurring famines, epitomized by the 1984 famine in Ethiopia.
