{"id":15637,"date":"2017-09-01T20:00:40","date_gmt":"2017-09-01T18:00:40","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=15637"},"modified":"2017-08-25T16:11:45","modified_gmt":"2017-08-25T14:11:45","slug":"chaleur-des-ilots-urbains-los-angeles-peint-ses-routes-en-blanc","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/chaleur-des-ilots-urbains-los-angeles-peint-ses-routes-en-blanc\/","title":{"rendered":"Chaleur des \u00celots Urbains, Los Angeles peint ses routes en blanc"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Et s\u2019il suffisait de peindre les routes en blanc pour limiter les \u00eelots de chaleur en ville ? C\u2019est ce qu\u2019exp\u00e9rimente la ville de Los Angeles, o\u00f9 les temp\u00e9ratures avoisinent les 40\u00b0C en plein \u00e9t\u00e9. Cette technique simple n\u00e9cessite tr\u00e8s peu d\u2019investissement pour un r\u00e9sultat imm\u00e9diat.<\/p>\n<p>La cit\u00e9 des Anges est l\u2019une des premi\u00e8res m\u00e9gapoles au monde \u00e0 tester ce qu\u2019on appelle les \u00ab cool pavements \u00bb ou \u00ab chauss\u00e9es fra\u00eeches \u00bb. Le principe est simple : appliquer un rev\u00eatement sp\u00e9cial clair et \u00e9vitant les reflets. Arm\u00e9s de rouleaux-perches, les services techniques de la municipalit\u00e9 ont commenc\u00e9 \u00e0 repeindre le bitume \u00e0 travers la ville d\u00e9but ao\u00fbt 2017.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/meYDV32wC3Q?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p>L\u2019efficacit\u00e9 de cette technique a rapidement \u00e9t\u00e9 prouv\u00e9e. La soci\u00e9t\u00e9 Guartop qui produit cet enduit particulier s\u2019est rendue sur les lieux des travaux, thermom\u00e8tre en main. Et le r\u00e9sultat est sans \u00e9quivoque, la temp\u00e9rature passait de 42 \u00e0 36 degr\u00e9s sur le rev\u00eatement. Car le bitume noir emmagasine 80 \u00e0 95% de la lumi\u00e8re solaire, tandis que le blanc la renvoie, faisant baisser, de fait, la temp\u00e9rature au sol de fa\u00e7on spectaculaire.<\/p>\n<p>Cela permet non seulement de limiter le recours aux climatisations dans les v\u00e9hicules et les logements, mais aussi de r\u00e9duire l\u2019\u00e9cart de temp\u00e9rature entre la ville et sa p\u00e9riph\u00e9rie qui d\u00e9r\u00e8gle les \u00e9cosyst\u00e8mes.<\/p>\n<p>Alors, \u00e0 quand le bitume des grandes villes fran\u00e7aises comme Paris, Bordeaux, Marseille ou Lyon recouvert de blanc ?<\/p>\n<p>extrait et source de&nbsp;<a href=\"http:\/\/positivr.fr\/los-angeles-routes-peinture-blanc-temperature\/\" target=\"_blank\" rel=\"noopener\">http:\/\/positivr.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"15637\">(879)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Et s\u2019il suffisait de peindre les routes en blanc pour limiter les \u00eelots de chaleur en ville ? C\u2019est ce&#8230;<\/p>\n","protected":false},"author":1,"featured_media":15638,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Chaleur des \u00celots Urbains, Los Angeles peint ses routes en blanc @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[26],"tags":[6323,316,4056,52,1240,64,231],"class_list":["post-15637","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-solutions","tag-blanc","tag-chaleur","tag-ilot-urbain","tag-rechauffement","tag-route","tag-temperatures","tag-ville","wpcat-26-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/08\/route-blanche-los-angeles.jpg?fit=634%2C387&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-44d","jetpack-related-posts":[{"id":19371,"url":"https:\/\/www.laterredufutur.com\/accueil\/pour-lutter-contre-les-ilots-de-chaleurs-los-angeles-peint-ses-rues-en-blanc\/","url_meta":{"origin":15637,"position":0},"title":"Pour lutter contre les \u00eelots de chaleurs, Los Angeles peint ses rues en blanc","author":"Admin","date":"11 juillet 2019","format":false,"excerpt":"la ville de Los Angeles met en oeuvre une nouvelle strat\u00e9gie assez surprenante : recouvrir ses rues d\u2019un rev\u00eatement blanc, gris\u00e2tre baptis\u00e9 CoolSeal. Cette transformation esth\u00e9tique aurait un impact bien au-del\u00e0 de la chauss\u00e9e. Comme la plupart des grandes villes contemporaines, Los Angeles est garnie de milliers de kilom\u00e8tres d\u2019asphalte.\u2026","rel":"","context":"Dans &quot;Solutions&quot;","block_context":{"text":"Solutions","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/solutions\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/rue-peinte-blanche-los-angeles-3.jpg?fit=880%2C660&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/rue-peinte-blanche-los-angeles-3.jpg?fit=880%2C660&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/rue-peinte-blanche-los-angeles-3.jpg?fit=880%2C660&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/07\/rue-peinte-blanche-los-angeles-3.jpg?fit=880%2C660&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":7693,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-est-etonnant-de-mesurer-la-temperature-au-sein-des-aeroports\/","url_meta":{"origin":15637,"position":1},"title":"Il est \u00e9tonnant de mesurer la temp\u00e9rature au sein des a\u00e9roports","author":"Admin","date":"16 juillet 2015","format":false,"excerpt":"Une grande partie des stations m\u00e9t\u00e9o terrestres sont victimes de l\u2019effet de chaleur urbain et toujours mesur\u00e9s dans les a\u00e9roports. R\u00e9chauffement ou pas r\u00e9chauffement ? En 2009, des \u00e9quipes de recherche ont \u00e9tudi\u00e9 les \u00ab \u00eelots de chaleur urbains \u00bb. Pour cela, ils ont utilis\u00e9 la bicyclette aux Pays-Bas, et\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/ilot-urbains-aeroport.jpg?fit=498%2C453&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5524,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-ilots-urbains-syndrome-du-rechauffement\/","url_meta":{"origin":15637,"position":2},"title":"Les Ilots Urbains, syndrome du r\u00e9chauffement ?","author":"Admin","date":"15 septembre 2010","format":false,"excerpt":"Les \u00eelots de chaleur urbain (ICU en abr\u00e9g\u00e9) d\u00e9signent des \u00e9l\u00e9vations localis\u00e9es des temp\u00e9ratures, particuli\u00e8rement des temp\u00e9ratures maximales diurnes et nocturnes, enregistr\u00e9es en milieu urbain par rapport au zones rurales ou foresti\u00e8res voisines ou par rapport aux temp\u00e9ratures moyennes r\u00e9gionales. Au sein d'une m\u00eame ville, des diff\u00e9rences importantes de temp\u00e9rature\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/nord-de-paris.jpg?fit=400%2C300&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":5560,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-ilots-urbains-sous-haute-surveillance\/","url_meta":{"origin":15637,"position":3},"title":"Les \u00eelots urbains sous haute surveillance","author":"Admin","date":"22 octobre 2010","format":false,"excerpt":"L'\u00e9t\u00e9 2009, des \u00e9quipes de recherche ont \u00e9tudi\u00e9 les \"\u00eelots de chaleur urbains\". Pour cela, ils ont utilis\u00e9 la bicyclette aux Pays-Bas, et des syst\u00e8mes au sol et en altitude pour la Gr\u00e8ce. Ces \u00e9tudes s'inscrivent dans une initiative plus large visant \u00e0 comprendre l'\u00e9l\u00e9vation des temp\u00e9ratures dans les villes\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1246,"url":"https:\/\/www.laterredufutur.com\/accueil\/limpact-des-ilots-urbains\/","url_meta":{"origin":15637,"position":4},"title":"L&rsquo;impact des \u00celots urbains","author":"Admin","date":"29 janvier 2013","format":false,"excerpt":"D\u2019apr\u00e8s les chiffres des Nations unies, 60% de la population mondiale vivra en zone urbaine en 2030 et cela pourrait poser un probl\u00e8me majeur pour le climat, selon une \u00e9tude publi\u00e9e ce dimanche 27 janvier 2012, dans la revue Nature climate change. Les chercheurs ont d\u00e9montr\u00e9 que la chaleur g\u00e9n\u00e9r\u00e9e\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"7 milliards","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/10\/billion7.png?fit=550%2C338&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/10\/billion7.png?fit=550%2C338&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/10\/billion7.png?fit=550%2C338&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":1249,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-ilots-urbains-ii\/","url_meta":{"origin":15637,"position":5},"title":"Les \u00eelots urbains II","author":"Admin","date":"31 janvier 2013","format":false,"excerpt":"Une grande partie des stations m\u00e9t\u00e9o terrestres sont victimes de l\u2019effet de chaleur urbain. R\u00e9chauffement ou pas r\u00e9chauffement ? Le ph\u00e9nom\u00e8ne d\u2019\u00eelot de chaleur urbain consiste essentiellement dans le fait que l\u2019on peut mesurer exp\u00e9rimentalement une diff\u00e9rence de temp\u00e9rature assez consid\u00e9rable entre la ville et sa campagne environnante. \u00a0","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15637","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=15637"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15637\/revisions"}],"predecessor-version":[{"id":15639,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15637\/revisions\/15639"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/15638"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=15637"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=15637"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=15637"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}