{"id":10599,"date":"2026-03-04T10:00:07","date_gmt":"2026-03-04T09:00:07","guid":{"rendered":"https:\/\/www.hydrosciences.org\/?p=10599"},"modified":"2026-03-04T11:05:28","modified_gmt":"2026-03-04T10:05:28","slug":"the-orstom-ird-contribution-to-the-hydrology-of-low-latitude-regions-1943-2024-operational-issues-process-studies-regional-hydroclimatology-and-long-term-monitoring","status":"publish","type":"post","link":"https:\/\/www.hydrosciences.org\/en\/the-orstom-ird-contribution-to-the-hydrology-of-low-latitude-regions-1943-2024-operational-issues-process-studies-regional-hydroclimatology-and-long-term-monitoring\/","title":{"rendered":"HYDROLOGY OF LOW\u2013LATITUDE REGIONS"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"10599\" class=\"elementor elementor-10599\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7f340b4 e-flex e-con-boxed e-con e-parent\" data-id=\"7f340b4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d7f060 elementor-widget elementor-widget-text-editor\" data-id=\"8d7f060\" data-element_type=\"widget\" data-e-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<div><strong> THE ORSTOM-IRD CONTRIBUTION TO THE HYDROLOGY OFLOW-LATITUDE REGIONS (1943\u20132024): OPERATIONAL ISSUES, PROCESS STUDIES, REGIONAL HYDROCLIMATOLOGY AND LONG-TERM MONITORING<\/strong><\/div><div>\u00a0<\/div><div>PIERRE CHEVALLIER, GIL MAHE, CHRISTOPHE BOUVIER, JEAN\u2013EMMANUEL PATUREL, AND NATHALIE ROUCHE<\/div><div>\u00a0<\/div><div><a href=\"http:\/\/www.hydrosciences.org\/wp-content\/uploads\/2026\/03\/Hydrology_of_low-latitude_regions.pdf\">Hydrology_of_low-latitude_regions<\/a><\/div><div>\u00a0<\/div><div>Laboratoire HydroSciences, Montpellier, France<br \/>(Universit\u00e9 de Montpellier, CNRS, IRD, IMT Mines Al\u00e8s)<br \/>Corresponding author: pierre.chevallier@ird.fr<br \/>Earth Sciences History<br \/>Vol. 44, No. 2, 2025<br \/>pp. 614\u2013643<\/div><div>\u00a0<\/div><div>Ce document retrace l&rsquo;\u00e9volution de l&rsquo;hydrologie dans les r\u00e9gions intertropicales, notamment \u00e0 travers l&rsquo;histoire et les activit\u00e9s de l&rsquo;ORSTOM-IRD<\/div><div>\u00a0<\/div><div>\u00a0<\/div><div><p><strong>ABSTRACT<\/strong><br \/>ORSTOM\u2013IRD, a French research institution, has contributed during 80 years to the observation of various components of the hydrological cycle in diverse low-latitude<br \/>regions. Initially devoted to the monitoring of large river systems in Africa, ORSTOM\u2013<br \/>IRD hydrologists started to instrument small catchments during the 1950s to address<br \/>technical needs for developing infrastructures, with the aim of better understanding the<br \/>processes controlling the local water cycle in various environments. Since the early<br \/>1990s ORSTOM\u2013IRD hydrologists have been actively involved in so-called \u2018Regional<br \/>Hydroclimatology Projects\u2019 (RHPs), which are large international programs intended to<br \/>decipher the interactions between land surfaces and the atmosphere in tropical<br \/>environments. Long-term observing programs arose from the RHPs and they now<br \/>constitute a key tool for monitoring the evolution of the hydrological cycle in regions<br \/>where safe access to water is still not guaranteed and threatened by the impacts of global<br \/>change.<br \/><strong>Keywords<\/strong>: Low-latitude, hydro-meteorological processes, hydrological engineering,<br \/>monitoring and databases, capacity building<br \/>doi: 10.17704\/1944-6187-44.2.614<\/p><\/div><div>\u00a0<\/div><div>\u00a0<\/div><div>\u00a0<\/div><div>\u00a0<\/div><div>\u00a0<\/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>","protected":false},"excerpt":{"rendered":"<p>THE ORSTOM-IRD CONTRIBUTION TO THE HYDROLOGY OFLOW-LATITUDE REGIONS (1943\u20132024): OPERATIONAL ISSUES, PROCESS STUDIES, REGIONAL HYDROCLIMATOLOGY AND LONG-TERM MONITORING\u00a0PIERRE CHEVALLIER, GIL MAHE, CHRISTOPHE BOUVIER, JEAN\u2013EMMANUEL PATUREL, AND NATHALIE ROUCHE\u00a0Hydrology_of_low-latitude_regions\u00a0Laboratoire HydroSciences, Montpellier, France(Universit\u00e9 de Montpellier, CNRS, IRD, IMT Mines Al\u00e8s)Corresponding author: pierre.chevallier@ird.frEarth Sciences HistoryVol. 44, No. 2, 2025pp. 614\u2013643\u00a0Ce document retrace l&rsquo;\u00e9volution de l&rsquo;hydrologie dans les r\u00e9gions [&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":10606,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","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":"","ast-disable-related-posts":"","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":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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