{"id":2297,"date":"2008-07-07T12:35:21","date_gmt":"2008-07-07T12:35:21","guid":{"rendered":"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/07\/07\/les-amricains-d\/"},"modified":"2012-07-12T10:46:44","modified_gmt":"2012-07-12T10:46:44","slug":"les-amricains-d","status":"publish","type":"post","link":"https:\/\/blogs.thesocialmedia.com\/leblogenergie\/2008\/07\/07\/les-amricains-d\/","title":{"rendered":"Les am\u00e9ricains d\u00e9couvrent que leur pays peut accomplir de formidables r\u00e9ductions d&rsquo;\u00e9missions de gaz \u00e0 effet de serre"},"content":{"rendered":"<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; <strong><span style=\"font-size: 1.4em\">U<\/span><\/strong>n sondage mondial qui demanderait quel est le pays qui sans effort particulier, sans alt\u00e9ration profonde de son mode de vie, peut r\u00e9duire son gaspillage \u00e9nerg\u00e9tique et ses \u00e9missions de gaz \u00e0 effet de serre&nbsp; pl\u00e9bisciterait, sans contestation possible, les Etats-Unis. Mais voila les &quot;American Citizens&quot; ne se sont pas encore totalement convaincus de cela. Un indice: je n&rsquo;ai pas encore trouv\u00e9 de courbe publi\u00e9e par un organisme officiel am\u00e9ricain montrant une d\u00e9croissance nette soit des consommations d&rsquo;\u00e9nergie ou de carburant ou d&rsquo;\u00e9missions de gaz \u00e0 effet de serre (GES). Mais les mentalit\u00e9s basculent et certains &quot;audacieux&quot; publient m\u00eame des th\u00e8ses en disant que finalement ce ne serait pas tr\u00e8s difficile de faire des progr\u00e8s et de montrer l&rsquo;exemple. C&rsquo;est le cas de Nicholas Paul Lutsey qui dans sa th\u00e8se pour l&rsquo;obtention d&rsquo;un Doctorat de Philosophie en Californie a \u00e9tudi\u00e9 l&rsquo;impact de l&rsquo;application des technologies existantes sur les r\u00e9ductions d&rsquo;\u00e9missions de GES dans divers secteurs de l&rsquo;\u00e9conomie am\u00e9ricaine, en se focalisant plus particuli\u00e8rement sur les transports. Et voila-t-il pas qu&rsquo;il montre que les \u00e9missions de gaz des v\u00e9hicules l\u00e9gers am\u00e9ricains vont se stabiliser rapidement puis d\u00e9cro\u00eetre(FIG.)<a href=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/thse2008lutseycalifornie1.jpg\"><img loading=\"lazy\" decoding=\"async\" height=\"328\" alt=\"Thse2008lutseycalifornie\" src=\"http:\/\/blogs.thesocialmedia.com\/leblogenergie\/files\/2012\/07\/thse2008lutseycalifornie.jpg\" width=\"480\"  \/><\/a>&nbsp; <\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; La R\u00e9f\u00e9rence (courbe noire en continu) est la pr\u00e9vision (?) de l&rsquo;Annual Energy Outlook 2008 de l&rsquo;Energy Information Administration. Lutsey d\u00e9duit de cette courbe les \u00e9conomies provenant de plusieurs actions dont la probabilit\u00e9 d&rsquo;application est tr\u00e8s \u00e9lev\u00e9e telles que:<\/p>\n<ol>\n<li>les progr\u00e8s de rendement \u00e9nerg\u00e9tique des v\u00e9hicules am\u00e9ricains de 20% (incremental fuel efficiency) avec des am\u00e9liorations sur la combustion, la transmission, l&rsquo;injection directe, etc.;<\/li>\n<li>les r\u00e9ductions de consommation de 10% (on road efficiency) avec des pneus \u00e0 faible force de frottement, un air conditionn\u00e9 optimis\u00e9, etc.;<\/li>\n<li>l&rsquo;utilisation de 13% d&rsquo;\u00e9thanol dans l&rsquo;essence<\/li>\n<li>le changement de fluide caloporteur dans les syst\u00e8mes d&rsquo;air conditionn\u00e9,<\/li>\n<li>l&rsquo;introduction des v\u00e9hicules hybrides (10% en 2018, 50% en 2023 et 90% en 2027)<\/li>\n<\/ol>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;Avec ces cinq familles d&rsquo;actions Lutsey arrive \u00e0 la courbe rouge d&rsquo;\u00e9missions de GES par les v\u00e9hicules l\u00e9gers. Finalement il a fait le travail que raisonnablement l&rsquo;EIA aurait du faire avant de publier sa stupide courbe noire.<\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp; La courbe bleue pr\u00e9figure pour lui ce qu&rsquo;apporteraient les innovations non programm\u00e9es pour rejoindre l&rsquo;objectif de 2050 de 80% des \u00e9missions de 1990.<\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; Avec la r\u00e9duction des ventes de 4X4 et la r\u00e9duction du nombre de trajets actuellement observ\u00e9s et non pris en compte dans ce travail, il est m\u00eame raisonnable de penser que le petit accroissement d&rsquo;\u00e9missions au del\u00e0 de 2008 de cette courbe n&rsquo;aura pas lieu.<\/p>\n<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; En conclusion, ce travail montre que les am\u00e9ricains stimul\u00e9s par la hausse des prix des carburants et la menace d&rsquo;un changement climatique, qui pour eux est synonyme de tornades dans le Golfe du Mexique, ont amorc\u00e9 la d\u00e9croissance du gaspillage \u00e9nerg\u00e9tique qui caract\u00e9risait leur mode de vie. Il n&rsquo;y a aucune raison que ce peuple civilis\u00e9 n&rsquo;adh\u00e8re pas \u00e0 un objectif raisonnable de ma\u00eetrise de ses d\u00e9penses \u00e9nerg\u00e9tiques et de ses \u00e9missions de gaz \u00e0 effet de serre.<\/p>\n<p>Le 7 Juillet 2008.<\/p>\n<p>&#8211;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; Un sondage mondial qui demanderait quel est le pays qui sans effort particulier, sans alt\u00e9ration profonde de son mode de vie, peut r\u00e9duire son gaspillage \u00e9nerg\u00e9tique et ses \u00e9missions de gaz \u00e0 effet de serre&nbsp; pl\u00e9bisciterait, sans contestation possible, les Etats-Unis. Mais voila les &quot;American Citizens&quot; [&hellip;]<\/p>\n","protected":false},"author":341,"featured_media":9428,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-2297","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-rechauffement-climatique"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Les am\u00e9ricains d\u00e9couvrent que leur pays peut accomplir de formidables r\u00e9ductions d&#039;\u00e9missions de gaz \u00e0 effet de serre - 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\/2008\/07\/07\/les-amricains-d\/\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Les am\u00e9ricains d\u00e9couvrent que leur pays peut accomplir de formidables r\u00e9ductions d&#039;\u00e9missions de gaz \u00e0 effet de serre - leblogenergie.com\" \/>\n<meta name=\"twitter:description\" content=\"&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; Un sondage mondial qui demanderait quel est le pays qui sans effort particulier, sans alt\u00e9ration profonde de son mode de vie, peut r\u00e9duire son gaspillage \u00e9nerg\u00e9tique et ses \u00e9missions de gaz \u00e0 effet de serre&nbsp; pl\u00e9bisciterait, sans contestation possible, les Etats-Unis. 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&nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; Un sondage mondial qui demanderait quel est le pays qui sans effort particulier, sans alt\u00e9ration profonde de son mode de vie, peut r\u00e9duire son gaspillage \u00e9nerg\u00e9tique et ses \u00e9missions de gaz \u00e0 effet de serre&nbsp; pl\u00e9bisciterait, sans contestation possible, les Etats-Unis. 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