![\"Ocosatellitenasa\"](\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/ocosatellitenasa.png\")
<\/a><\/p>\n Ce satellite est \u00e9quip\u00e9 de trois spectrom\u00e8tres qui partagent un t\u00e9lescope et une unit\u00e9 cryog\u00e9nique qui maintient ces trois d\u00e9tecteurs de signaux dans le proche Infrarouge \u00e0 -150\u00b0C. L’un va mesurer la teneur en CO2 \u00e0 basse altitude, le second la teneur \u00e0 haute altitude et le troisi\u00e8me va mesurer les teneurs en eau et la pr\u00e9sence de nuages dans l’atmosph\u00e8re. OCO saura faire trois types de mesures: au nadir, c’est \u00e0 dire \u00e0 la verticale de la Terre, en r\u00e9flexion du rayonnement solaire et sur une cible pr\u00e9cise. La NASA esp\u00e8re par de longues campagnes de mesures apporter des \u00e9claircissements sur les puits de CO2 "manquants" c’est \u00e0 dire non encore identifi\u00e9s.<\/p>\n
Il est vraisemblable qu’elle va mettre en \u00e9vidence et quantifier de puissantes sources de CO2 sur certains territoires, comme par exemple en Chine dont les productions de CO2 font d\u00e9bat. De nombreuses incertitudes sur le r\u00f4le des for\u00eats en fonction de leur latitude, des oc\u00e9ans en fonction de leur salinit\u00e9 et de leur temp\u00e9rature en surface, des d\u00e9serts qui semblent eux aussi fixer du CO2 pourraient \u00eatre au moins partiellement lev\u00e9es par ces nouvelles donn\u00e9es exp\u00e9rimentales.<\/p>\n
La publication d’une carte d\u00e9taill\u00e9e des \u00e9missions de CO2 sur Terre serait d’un profond int\u00e9r\u00eat et pourrait constituer un puissant outil de sensibilisation de bien des populations. Une carte de France, du Benelux et de l’Allemagne ou plus g\u00e9n\u00e9ralement d’Europe de l’Ouest serait passionnante \u00e0 visualiser. Chaque source importante sera identifi\u00e9e et les progr\u00e8s accomplis ou non vers une r\u00e9duction des \u00e9missions de CO2 pourront \u00eatre illustr\u00e9s.<\/p>\n
Le 5 Janvier 2009.<\/p>\n
–<\/p>\n","protected":false},"excerpt":{"rendered":"
Le bilan entre \u00e9missions et absorption du CO2 sur la surface du Globe est un exercice complexe. Pour l’instant les mesures de CO2 dans l’atmosph\u00e8re indiquent que les \u00e9missions sont sup\u00e9rieures aux absorptions, mais la d\u00e9composition analytique annuelle de chacun des effets est entach\u00e9e de graves […]<\/p>\n","protected":false},"author":341,"featured_media":11387,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-1381","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rechauffement-climatique"],"yoast_head":"\n
Un nouveau satellite de la NASA pour identifier les sources et les puits de CO2 sur toute la surface de la Terre - leblogenergie.com<\/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:\/\/blogs.thesocialmedia.com\/leblogenergie\/2009\/01\/05\/un-nouveau-sate\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Un nouveau satellite de la NASA pour identifier les sources et les puits de CO2 sur toute la surface de la Terre - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\" Le bilan entre \u00e9missions et absorption du CO2 sur la surface du Globe est un exercice complexe. 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<\/a><\/p>\n