{"id":486,"date":"2016-05-18T07:37:00","date_gmt":"2016-05-18T05:37:00","guid":{"rendered":"https:\/\/kids.esa.int\/greenhouse_gases_on_the_rise\/"},"modified":"2026-10-08T00:28:45","modified_gmt":"2026-10-07T22:28:45","slug":"greenhouse_gases_on_the_rise","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/greenhouse_gases_on_the_rise\/","title":{"rendered":"Augmentation des gaz \u00e0 effet de serre"},"content":{"rendered":"<div class=\"lede\">\n<p>Les satellites d\u2019observation de la Terre ont d\u00e9montr\u00e9 que les volumes de m\u00e9thane et de dioxyde de carbone continuaient d\u2019augmenter dans notre atmosph\u00e8re.<\/p>\n<\/div>\n<p>Le m\u00e9thane et le dioxyde de carbone sont des gaz \u00e0 effet de serre qui contribuent au r\u00e9chauffement climatique. Ils agissent comme une couverture autour de notre plan\u00e8te, qui retient la chaleur et provoque une augmentation des temp\u00e9ratures mondiales. Ce ph\u00e9nom\u00e8ne entra\u00eene une augmentation du niveau des mers et impacte les hommes, la faune et la flore.<\/p>\n<p>Dans le monde entier, des chercheurs ont utilis\u00e9 les satellites Envisat de l\u2019ESA et GoSat du Japon pour mesurer l\u2019\u00e9volution des gaz \u00e0 effets de serre. Ils ont d\u00e9couvert que les volumes de m\u00e9thane dans notre atmosph\u00e8re \u00e9taient rest\u00e9s relativement constants jusqu\u2019en 2007, mais avaient ensuite augment\u00e9 d\u2019environ 0,3 % chaque ann\u00e9e. Les niveaux mondiaux de dioxyde de carbone ont quant \u00e0 eux augment\u00e9 de 0,5 % chaque ann\u00e9e. Cela peut para\u00eetre insignifiant, mais ces chiffres sont r\u00e9ellement inqui\u00e9tants, d\u2019autant plus que de nombreux pays ont tent\u00e9 de r\u00e9duire leur production de m\u00e9thane et de dioxyde de carbone.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1818\" data-credit=\"ESA\/ATG medialab\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/05\/Sentinel-5P\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2016\/05\/sentinel-5p\/17878922-2-eng-GB\/Sentinel-5P.jpg\" alt=\"Sentinel-5P\"><figcaption>Sentinel-5P<\/figcaption><\/figure>\n<p>Le dioxyde de carbone exc\u00e9dentaire provient tr\u00e8s probablement de la combustion des \u00e9nergies fossiles comme le charbon, le p\u00e9trole ou le gaz. Ces \u00e9nergies fossiles, qui permettent de cr\u00e9er de l\u2019\u00e9lectricit\u00e9 pour nos foyers ou du carburant pour nos voitures, rel\u00e2chent malheureusement du dioxyde de carbone dans notre atmosph\u00e8re.<\/p>\n<p>Surveiller l\u2019\u00e9volution de cette situation est d\u2019une grande importance. Sans donn\u00e9es pr\u00e9cises, il est tr\u00e8s difficile d\u2019\u00e9valuer les quantit\u00e9s de gaz \u00e0 effet de serre. Pour nous aider dans cette mission, un nouveau satellite de l\u2019ESA baptis\u00e9 Sentinel-5P va mesurer chaque jour les volumes de m\u00e9thane produits sur Terre afin de dresser un bilan plus complet et de lutter contre les changements climatiques.<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> Les plantes absorbent environ 25% du dioxyde de carbone que nous produisons.<\/p>","protected":false},"excerpt":{"rendered":"<p>Satellite observations of planet Earth have shown that the amount of methane and carbon dioxide in our atmosphere is going up. Methane and carbon dioxide are \u201cgreenhouse gases\u201d thought to [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2016\/05\/average_satellite_carbon_dioxide_concentrations_over_europe\/17911824-2-eng-GB\/Average_satellite_carbon_dioxide_concentrations_over_Europe.png","esa_banner_description":"Average satellite carbon dioxide concentrations over Europe","esa_banner_credit":"University of Bremen","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2016\/05\/Average_satellite_carbon_dioxide_concentrations_over_Europe","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-486","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/486","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=486"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/486\/revisions"}],"predecessor-version":[{"id":4511,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/486\/revisions\/4511"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=486"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=486"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=486"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=486"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=486"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=486"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=486"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=486"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=486"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=486"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}