Impact of integration time steps of rain drop size distribution on their structuring and their modelling: a case study in northern Benin

Simple item page
AuteurMOUMOUNI, SOUNMAILA
AuteurADJIKPE, LOIC SATURNIN
AuteurLAWIN, AGNIDE EMMANUEL
Date d'ajout2026-06-02T16:06:57Z
Date de disponibilite2026-06-02T16:06:57Z
Date de publication2021
ResumeThis paper focused on modelling rain drop size distributions (DSDs) of various integration time steps using unimodal DSD models (gamma and lognormal). Rain DSD data considered are those collected from 2005 to 2007 near Djougou city in the north-western region of Benin Republic. The efficiency of these models was characterized by statistical criteria, mainly Nash and KGE. These criteria are used to assess the level of fitting of rain DSD spectra. Superimposed rain DSDs were then parameterized with the rainfall rate, using the scaling law formalism. Results show that there is an improvement in the structuring of the rain DSDs according to their measurement duration. Analysis of the occurrence statistics of the structuring of the spectra reveals that the Spectra ill adjusted by a unimodal DSD model represents 5 to 15% of the population of 1 min rain DSDs. This population decreases according to the measurement duration of the spectra. The optimal measurement time is found to be 10 min. Furthermore, parameters of the shape functions (gamma and lognormal) increase or decrease markedly according to the measurement duration of the rain DSD spectra. For applications using the relationships deduced from the rain DSDs, results suggested that the measurement time scale must be taken into account when choosing appropriate relationships
DOI10.5802/crgos.55
Autre identifiantBECDB-10952
URIhttps://dspace.uac.bj/handle/123456789/9711
Languefr
Fait partie deComptes Rendus Géosciene – Sciences de la Planète
SujetRain DSD
SujetScaling law
SujetUnimodal DSD models
Sujetrainfall
SujetParameterization
SujetIntegration time
Sujetsteps
SujetWest Africa
TitreImpact of integration time steps of rain drop size distribution on their structuring and their modelling: a case study in northern Benin
TypeArticle

Files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
e1fb02392afa020f47a57d444c44f5ac.pdf
Size:
4.03 MB
Format:
Adobe Portable Document Format
Download

Collections

Articles