{"id":2994,"date":"2021-05-26T10:55:53","date_gmt":"2021-05-26T08:55:53","guid":{"rendered":"http:\/\/www.hydrosciences.org\/?p=2994"},"modified":"2024-11-18T21:23:17","modified_gmt":"2024-11-18T20:23:17","slug":"la-validation-des-produits-satellites-de-haute-resolution-pour-la-prevision-des-debits-sur-lafrique-du-nord-mahdi-el-khalki","status":"publish","type":"post","link":"https:\/\/www.hydrosciences.org\/?p=2994&lang=fr","title":{"rendered":"La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord &#8211; Mahdi El Khalki"},"content":{"rendered":"\n<p>Pr\u00e9sentation par Mahdi El Khalki doctorant IRD le 6 mai 2021, dans le cadre de s\u00e9minaire d\u2019HSM,<\/p>\n\n\n\n<p><em>R\u00e9sum\u00e9 <\/em>&nbsp;: Les pays du Maghreb, comme de nombreux pays africains, sont d\u00e9pourvu de r\u00e9seaux de mesure denses qui permettent le suivi des ressources en eau.<\/p>\n\n\n\n<p>Les produits issus de donn\u00e9es satellitaires r\u00e9centes ou les r\u00e9analyses permettent d\u2019estimer les pr\u00e9cipitations et ainsi pallier le manque de donn\u00e9es au sol.<\/p>\n\n\n\n<p class=\"justify\">Dans le contexte o\u00f9 les pr\u00e9cipitations observ\u00e9es ne sont pas disponibles, l\u2019\u00e9valuation des produits pluviom\u00e9triques peut \u00eatre faite en comparant le d\u00e9bit observ\u00e9 et simul\u00e9 par un mod\u00e8le hydrologique. <br>Dans cette \u00e9tude, nous avons \u00e9valu\u00e9 la pr\u00e9cision de trois produits pluviom\u00e9triques (ERA5, GPM, SM2RAIN-ASCAT) avec quatre mod\u00e8les hydrologiques globaux (IHACRES, MISDC, GR4J et CREST) pour 24 bassins sur le Maghreb situ\u00e9s au Maroc, Alg\u00e9rie et Tunisie.<\/p>\n\n\n\n<p class=\"justify\">Les r\u00e9sultats ont montr\u00e9 que le produit GPM sous-estime le d\u00e9bit pour tous les mod\u00e8les hydrologiques tandis que ERA5, r\u00e9cente r\u00e9analyse du centre europ\u00e9en ECMWF, donne les meilleurs r\u00e9sultats.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9sentation par Mahdi El Khalki doctorant IRD le 6 mai 2021, dans le cadre de s\u00e9minaire d\u2019HSM, R\u00e9sum\u00e9 &nbsp;: Les pays du Maghreb, comme de nombreux pays africains, sont d\u00e9pourvu de r\u00e9seaux de mesure denses qui permettent le suivi des ressources en eau. Les produits issus de donn\u00e9es satellitaires r\u00e9centes ou les r\u00e9analyses permettent d\u2019estimer &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/www.hydrosciences.org\/?p=2994&#038;lang=fr\"> <span class=\"screen-reader-text\">La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord &#8211; Mahdi El Khalki<\/span> Lire la suite \u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":3020,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"","footnotes":""},"categories":[97,27],"tags":[],"class_list":["post-2994","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualite-scientifique-fr","category-toutes-les-actualites"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord - Mahdi El Khalki - HydroSciences Montpellier<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.hydrosciences.org\/?p=2994&lang=fr\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord - Mahdi El Khalki - HydroSciences Montpellier\" \/>\n<meta property=\"og:description\" content=\"Pr\u00e9sentation par Mahdi El Khalki doctorant IRD le 6 mai 2021, dans le cadre de s\u00e9minaire d\u2019HSM, R\u00e9sum\u00e9 &nbsp;: Les pays du Maghreb, comme de nombreux pays africains, sont d\u00e9pourvu de r\u00e9seaux de mesure denses qui permettent le suivi des ressources en eau. Les produits issus de donn\u00e9es satellitaires r\u00e9centes ou les r\u00e9analyses permettent d\u2019estimer &hellip; La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord &#8211; Mahdi El Khalki Lire la suite \u00bb\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.hydrosciences.org\/?p=2994&amp;lang=fr\" \/>\n<meta property=\"og:site_name\" content=\"HydroSciences Montpellier\" \/>\n<meta property=\"article:published_time\" content=\"2021-05-26T08:55:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-18T20:23:17+00:00\" \/>\n<meta name=\"author\" content=\"administrateur\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"administrateur\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.hydrosciences.org\/?p=2994&lang=fr#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.hydrosciences.org\/?p=2994&lang=fr\"},\"author\":{\"name\":\"administrateur\",\"@id\":\"https:\/\/www.hydrosciences.org\/#\/schema\/person\/2e13014374222da5944c9e64ff491a7e\"},\"headline\":\"La validation des produits satellites de haute r\u00e9solution pour la pr\u00e9vision des d\u00e9bits sur l\u2019Afrique du Nord &#8211; 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