{"id":5540,"date":"2026-05-21T14:00:18","date_gmt":"2026-05-21T12:00:18","guid":{"rendered":"https:\/\/www.projet-cecc.org\/?p=5540"},"modified":"2026-05-21T14:03:15","modified_gmt":"2026-05-21T12:03:15","slug":"hydrological-variability-of-large-rivers-in-west-africa-gap-filling-with-earthobservations-and-daily-rainfall-runoff-modelling","status":"publish","type":"post","link":"https:\/\/www.projet-cecc.org\/?p=5540","title":{"rendered":"Hydrological variability of large rivers in West Africa: gap-filling with Earthobservations and daily rainfall-runoff modelling"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5540\" class=\"elementor elementor-5540\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8c8eb5e e-flex e-con-boxed e-con e-parent\" data-id=\"8c8eb5e\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-32ee686 elementor-widget elementor-widget-text-editor\" data-id=\"32ee686\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h3><a href=\"https:\/\/www.tandfonline.com\/doi\/epdf\/10.1080\/02626667.2025.2542477?needAccess=true\">Cliquez ici pour acc\u00e9der au .pdf de la publication<\/a><\/h3>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-db4b371 e-flex e-con-boxed e-con e-parent\" data-id=\"db4b371\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a98af4e elementor-widget elementor-widget-text-editor\" data-id=\"a98af4e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2 id=\"d1e150\" class=\"section-heading-2\">ABSTRACT<\/h2><div id=\"abs0015\"><p id=\"sp0090\">In West Africa, hydrological variability remains poorly understood in many watersheds where observation networks are sparse. After gap-filling gauge data with remote sensing datasets and daily rainfall-runoff modelling, the hydroclimatic variability in upper catchments of the Gambia, Koliba Corubal, Kayanga Geba, and Senegal rivers is investigated. CHIRPS rainfall and GLEAM evapotranspiration are used to simulate discharge in 38 sub-basins over 1981\u20132023 with the GR4J model. Robust performance observed in 34 basins (KGE &gt; 0.5) confirms the effectiveness of the approach even at a daily time step in poorly gauged basins. A dry period (1981\u20131993), followed by two distinct wet periods (1994\u20132007,2008\u20132023) are identified using standardized precipitation index (SPI), standardized streamflow index(SSI) and the non-parametric Mann-Kendall test. Increased variability in extreme flows and a later peak flood are observed in some basins. Understanding non-stationarity in West African basins is essential to support stakeholders in defining adequate river basin development strategies.<\/p><\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cliquez ici pour acc\u00e9der au .pdf de la publication ABSTRACT In West Africa, hydrological variability remains poorly understood in many watersheds where observation networks are sparse. After gap-filling gauge data<\/p><\/div>\n<div class=\"blog-btn\"><a href=\"https:\/\/www.projet-cecc.org\/?p=5540\" class=\"home-blog-btn\">Lire la suite<\/a><\/p>\n","protected":false},"author":5,"featured_media":5541,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":0,"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","footnotes":""},"categories":[80],"tags":[],"class_list":["post-5540","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-publications"],"_links":{"self":[{"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/posts\/5540","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5540"}],"version-history":[{"count":4,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/posts\/5540\/revisions"}],"predecessor-version":[{"id":5546,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/posts\/5540\/revisions\/5546"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=\/wp\/v2\/media\/5541"}],"wp:attachment":[{"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5540"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5540"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.projet-cecc.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5540"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}