{"id":420,"date":"2017-11-07T09:24:00","date_gmt":"2017-11-07T08:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/melting_snow_helps_trees_to_absorb_carbon_dioxide\/"},"modified":"2026-10-08T00:27:59","modified_gmt":"2026-10-07T22:27:59","slug":"melting_snow_helps_trees_to_absorb_carbon_dioxide","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/melting_snow_helps_trees_to_absorb_carbon_dioxide\/","title":{"rendered":"La fonte des neiges aide les arbres \u00e0 absorber le dioxyde de carbone"},"content":{"rendered":"<div class=\"lede\">\n<p>Une nouvelle peut-elle \u00eatre \u00e0 la fois bonne et mauvaise ? Selon une \u00e9tude r\u00e9cente sur le r\u00e9chauffement climatique, ce serait le cas !<\/p>\n<\/div>\n<p>Le dioxyde de carbone pr\u00e9sent dans notre atmosph\u00e8re est l\u2019une des principales causes du r\u00e9chauffement climatique. Pour conna\u00eetre les niveaux de dioxyde de carbone qui composent notre atmosph\u00e8re, il est important de savoir d\u2019o\u00f9 ce gaz est rejet\u00e9, et o\u00f9 il est absorb\u00e9.<\/p>\n<p>Les habitants de la Terre br\u00fblent du charbon, consomment du p\u00e9trole et du gaz, conduisent des voitures et utilisent de l\u2019\u00e9lectricit\u00e9 pour chauffer leurs foyers, ce qui contribue \u00e0 diffuser du dioxyde de carbone dans l\u2019atmosph\u00e8re de notre plan\u00e8te. Plus les temp\u00e9ratures mondiales augmentent, plus le climat de la Terre change. Ces changements incluent la fonte des glaciers, l\u2019\u00e9l\u00e9vation du niveau des oc\u00e9ans et les catastrophes naturelles - des ph\u00e9nom\u00e8nes qui constituent \u00e9videmment une mauvaise nouvelle.<\/p>\n<p>L\u2019augmentation des temp\u00e9ratures a \u00e9galement des effets moins connus, comme par exemple une fonte des neiges anticip\u00e9e dans les immenses for\u00eats bor\u00e9ales du Canada, de Scandinavie, de Russie ou des \u00c9tats-Unis. La neige qui fond d\u00e9couvre de nombreux arbres, qui peuvent alors absorber le dioxyde de carbone dans l\u2019air en contribuant \u00e0 ralentir le r\u00e9chauffement climatique.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1197\" data-credit=\"GlobSnow \/ Finnish Meteorological Institute\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2017\/11\/This_graph_shows_when_the_forests_are_no_longer_covered_by_snow\" 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\/2017\/11\/this_graph_shows_when_the_forests_are_no_longer_covered_by_snow\/17908790-2-eng-GB\/This_graph_shows_when_the_forests_are_no_longer_covered_by_snow.jpg\" alt=\"This graph shows when the forests are no longer covered by snow.\"><figcaption>Ce graphique indique \u00e0 quel moment la neige a compl\u00e8tement fondu dans les for\u00eats.<\/figcaption><\/figure>\n<p>Pour nous aider \u00e0 mesurer les niveaux de dioxyde de carbone dans notre atmosph\u00e8re, un projet de l\u2019ESA baptis\u00e9 GlobSnow a utilis\u00e9 des satellites m\u00e9t\u00e9orologiques afin d\u2019observer les quantit\u00e9s de neige recouvrant l\u2019h\u00e9misph\u00e8re nord de 1979 \u00e0 2015. Une \u00e9quipe de chercheurs a r\u00e9cemment analys\u00e9 ces donn\u00e9es et a d\u00e9couvert que de nombreux arbres et plantes ont commenc\u00e9 \u00e0 se d\u00e9velopper plus t\u00f4t chaque printemps. Cela leur permet d\u2019absorber encore plus de dioxyde de carbone. Un ph\u00e9nom\u00e8ne climatique ind\u00e9sirable peut donc \u00eatre synonyme de bonne nouvelle !<\/p>\n<p>Ces nouveaux r\u00e9sultats devraient nous permettre de r\u00e9aliser des pr\u00e9visions encore plus pr\u00e9cises sur le r\u00e9chauffement climatique.<\/p>\n<p><b>Fait int\u00e9ressant :<\/b> L'ann\u00e9e prochaine, l'ESA lancera son projet Snow_cci afin d'am\u00e9liorer encore davantage le suivi des niveaux de neige \u00e0 l'\u00e9chelle mondiale.<\/p>","protected":false},"excerpt":{"rendered":"<p>Can something bad lead to something good? Maybe it can, according to new research about global warming. Scientists know that lots of carbon dioxide in our atmosphere is a key [&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\/2017\/11\/when_the_snow_melts_the_trees_can_absorb_carbon_dioxide\/17871522-2-eng-GB\/When_the_snow_melts_the_trees_can_absorb_carbon_dioxide.jpg","esa_banner_description":"When the snow melts, the trees can absorb carbon dioxide","esa_banner_credit":"A. 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