{"id":29459,"date":"2012-08-08T15:15:18","date_gmt":"2012-08-08T13:15:18","guid":{"rendered":"http:\/\/staging.sillon38.com\/?p=29459"},"modified":"2012-08-08T15:15:18","modified_gmt":"2012-08-08T13:15:18","slug":"bilan-2011-de-la-qualite-de-lair","status":"publish","type":"post","link":"https:\/\/www.sillon38.com\/blog\/2012\/08\/08\/bilan-2011-de-la-qualite-de-lair\/","title":{"rendered":"Bilan 2011 de la qualit\u00e9 de l\u2019air"},"content":{"rendered":"

Le Minist\u00e8re de l\u2019\u00c9cologie, du D\u00e9veloppement durable et de l\u2019\u00c9nergie a rendu public le rapport annuel sur le bilan de la qualit\u00e9 de l\u2019air 2011.<\/strong><\/span><\/p>\n

Chaque ann\u00e9e, la qualit\u00e9 de l\u2019air d\u00e9pend des quantit\u00e9s de polluants ou de pr\u00e9curseurs \u00e9mis dans l\u2019air et des conditions m\u00e9t\u00e9orologiques qui peuvent influer sur les concentrations, soit par la limitation de la dispersion dans les couches atmosph\u00e9riques, soit en favorisant la fabrication de certains polluants \u00e0 partir des pr\u00e9curseurs.<\/span><\/p>\n

Les \u00e9missions de polluants dans l\u2019air ont continu\u00e9 \u00e0 d\u00e9cro\u00eetre l\u00e9g\u00e8rement en 2011,
\nmais les concentrations de polluants dans l\u2019air ont peu \u00e9volu\u00e9. Une baisse des
\nconcentrations se poursuit pour le monoxyde de carbone et pour le dioxyde de soufre,
\npour lesquels aucun d\u00e9passement r\u00e9glementaire n\u2019a \u00e9t\u00e9 constat\u00e9 en 2011.<\/span><\/p>\n

Pour les particules ou l\u2019ozone, aucune r\u00e9elle tendance n\u2019est observ\u00e9e depuis le d\u00e9but
\ndes ann\u00e9es 2000, des facteurs externes tels que la m\u00e9t\u00e9orologie pouvant expliquer les
\nsensibles hausses ou baisses constat\u00e9es d\u2019une ann\u00e9e sur l\u2019autre. Ainsi, pour les
\nparticules, les temp\u00e9ratures froides du premier trimestre 2011 associ\u00e9es \u00e0 des
\nconditions anticycloniques relativement stables, ont favoris\u00e9 les \u00e9missions dues au
\nchauffage et \u00e0 la non dispersion des particules, conduisant \u00e0 un nombre \u00e9lev\u00e9 de
\nd\u00e9passements des valeurs limites r\u00e9glementaires en d\u00e9but d\u2019ann\u00e9e. On estime que
\npr\u00e8s de 12 millions de Fran\u00e7ais ont v\u00e9cu en 2011 dans des zones n\u2019ayant pas
\nrespect\u00e9 les valeurs limites annuelles relatives aux particules PM10.<\/span><\/p>\n

Pour l\u2019ozone, un seul \u00e9v\u00e9nement de pollution photochimique d\u2019ampleur nationale a \u00e9t\u00e9
\nrelev\u00e9 vers la fin du mois de juin marqu\u00e9 par un bref \u00e9pisode de fortes chaleurs. Sur le
\nlong terme, malgr\u00e9 la baisse des \u00e9missions des pr\u00e9curseurs de l\u2019ozone (oxydes
\nd\u2019azote, compos\u00e9s organiques volatiles, monoxyde de carbone), les niveaux de fond
\nrestent sup\u00e9rieurs \u00e0 ceux constat\u00e9s au d\u00e9but des ann\u00e9es 90.<\/span><\/p>\n

<\/p>\n

\"seuil<\/a>
seuil d'oxyde d'azote d\u00e9pass\u00e9 \u00e0 Grenoble. Le traffic mis en cause...<\/figcaption><\/figure>\n

La stabilit\u00e9 des concentrations de NO2 dans l\u2019air, avec \u00e0 l\u2019origine une r\u00e9duction globale
\ndes oxydes d\u2019azote mais une augmentation des \u00e9missions directes du dioxyde
\nd\u2019azote, est n\u00e9faste pour la sant\u00e9, en proximit\u00e9 des axes routiers. Plus de 10 % des
\nstations de mesure concern\u00e9es, principalement en situation de proximit\u00e9 automobile,
\nont d\u00e9pass\u00e9 les valeurs limites r\u00e9glementaires de dioxyde d\u2019azote dans l\u2019air en 2011.<\/span><\/p>\n

Sur les sites localis\u00e9s en proximit\u00e9 de voies
\nrouti\u00e8res (sites trafic), et plus directement affect\u00e9s
\npar les \u00e9missions automobiles, la moyenne
\nannuelle des concentrations observ\u00e9es
\n(51 \u03bcg\/m3) est \u00e9galement stable par rapport \u00e0
\n2010 et reste sup\u00e9rieure \u00e0 la valeur limite
\nannuelle fix\u00e9e \u00e0 40 \u03bcg\/m3. Ainsi, de nombreux
\nd\u00e9passements de la valeur limite sont
\nenregistr\u00e9s, pour la plupart dans les grandes
\nagglom\u00e9rations : Amiens, Bastia, Besan\u00e7on,
\nBordeaux, Brest, Chamonix, Clermont-Ferrand,
\nGrenoble, Limoges, Lyon, Marseille, Montpellier,
\nNancy, Nantes, Nice, Niort, Paris, Reims,
\nRennes, Rouen, Saint-Etienne, Strasbourg,
\nToulon, Toulouse, Tours et Valence<\/span><\/p><\/blockquote>\n

La lutte contre la pollution de l’air est une priorit\u00e9 majeure pour le gouvernement. C’est
\npourquoi Delphine BATHO, Ministre de l\u2019Ecologie, du D\u00e9veloppement durable et de
\nl\u2019Energie a souhait\u00e9 qu’elle soit inscrite \u00e0 l’ordre du jour de la Conf\u00e9rence
\nEnvironnementale dans la table ronde \u00ab\u00a0Pr\u00e9venir les risques sanitaires
\nenvironnementaux\u00a0\u00bb. Les mesures structurelles n\u00e9cessaires \u00e0 l\u2019am\u00e9lioration de la
\nqualit\u00e9 de l\u2019air feront \u00e9galement l’objet le 20 septembre prochain d’une r\u00e9union de
\ntravail avec les collectivit\u00e9s volontaires engag\u00e9es dans l’\u00e9laboration de Zones
\nd\u2019Actions Prioritaires pour l\u2019Air (ZAPA).<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Les \u00e9missions de polluants dans l\u2019air ont continu\u00e9 \u00e0 d\u00e9cro\u00eetre l\u00e9g\u00e8rement en 2011. Grenoble souffre de la pollution des transports…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,60],"tags":[2776],"class_list":["post-29459","post","type-post","status-publish","format-standard","hentry","category-environnement","category-pollution","tag-grenoble"],"yoast_head":"\nBilan 2011 de la qualit\u00e9 de l\u2019air -<\/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:\/\/www.sillon38.com\/blog\/2012\/08\/08\/bilan-2011-de-la-qualite-de-lair\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bilan 2011 de la qualit\u00e9 de l\u2019air -\" \/>\n<meta property=\"og:description\" content=\"Les \u00e9missions de polluants dans l\u2019air ont continu\u00e9 \u00e0 d\u00e9cro\u00eetre l\u00e9g\u00e8rement en 2011. Grenoble souffre de la pollution des transports...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.sillon38.com\/blog\/2012\/08\/08\/bilan-2011-de-la-qualite-de-lair\/\" \/>\n<meta property=\"article:published_time\" content=\"2012-08-08T13:15:18+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/staging.sillon38.com\/wp-content\/uploads\/2012\/08\/gren-1.jpg\" \/>\n<meta name=\"author\" content=\"Gilbert\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gilbert\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" 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