Temporal evolution of heavy rainfall in the southern West Africa coastline belt.

6533b857fe1ef96bd12b4113

RESEARCH PRODUCT

Temporal evolution of heavy rainfall in the southern West Africa coastline belt.

Marc Kpanou Patrick Laux Yao Télesphore Brou E. Vissin Pierre Camberlin Pascal Roucou

subject

[SDU.STU.CL] Sciences of the Universe [physics]/Earth Sciences/Climatology trend région méridionale côtière ouest-africaine [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Extreme rainfall Précipitations intenses Southern coastal belt of West Africa tendance

description

The Southern Coastalbelt of West Africa (SCWA) is exposed to recurrent flooding. The two objectives of the study are to show thespecificity of SCWA to heavy rainfall occurrence and to determine the trends of the latter. Daily rainfall data of41 stations in the southern parts of Côte d’Ivoire, Ghana, Togo and Benin for the period 1951–2015 and ClimateHazards Group InfraRed Precipitation data were used. The approach is based on the determination (for eachstation and grid point) of the 95th centile (P95) of precipitations greater than or equal to 1 mm. Results indicatethat rainfall is heavier on the coastal belt than inland (average P95 is 65,4 and 45,5 m/day for coastal and inlandstations respectively). After a decrease in rainfall totals and the Number of Days of Rainfall above P95 (NJPS95)until the 1970s, the Percentage Rainfall on days of intense precipitation (above P95) compared to the total annualrainfall record is stable.

year	journal	country	edition	language
2018-07-04

https://hal.archives-ouvertes.fr/hal-01859161

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