{"id":5615,"date":"2020-03-31T15:45:10","date_gmt":"2020-03-31T13:45:10","guid":{"rendered":"http:\/\/nano-sense.com\/?p=5615"},"modified":"2022-12-15T16:28:03","modified_gmt":"2022-12-15T14:28:03","slug":"une-nette-amelioration-de-la-qualite-de-lair-exterieur-depuis-la-mise-en-place-du-confinement-une-etude-dairparif","status":"publish","type":"post","link":"https:\/\/nano-sense.com\/index.php\/actualites\/une-nette-amelioration-de-la-qualite-de-lair-exterieur-depuis-la-mise-en-place-du-confinement-une-etude-dairparif\/","title":{"rendered":"Une nette am\u00e9lioration de la Qualit\u00e9 de l&rsquo;Air Ext\u00e9rieur depuis la mise en place du confinement : Etude Airparif"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"5615\" class=\"elementor elementor-5615\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-12ba20f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"12ba20f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-88ea3c1\" data-id=\"88ea3c1\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0caf78e elementor-widget elementor-widget-heading\" data-id=\"0caf78e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">L'impact du confinement  sur la qualit\u00e9 de l\u2019air en \u00cele-de-France.<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-dd023d2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"dd023d2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c6d6696\" data-id=\"c6d6696\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c0161b6 elementor-widget elementor-widget-heading\" data-id=\"c0161b6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Bilan Provisoire : Semaine du 16 au 20 mars 2020<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-afd2f57 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"afd2f57\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ce0251d\" data-id=\"ce0251d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3ca27ab elementor-widget elementor-widget-text-editor\" data-id=\"3ca27ab\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"box-sizing: border-box; margin: 0px 0px 20px; padding: 0px; border: 0px; outline: 0px; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400; color: #248cb5; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"><span style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; outline: 0px; font-variant: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; font-family: arial, helvetica, sans-serif; font-size: 17px; font-style: inherit; font-weight: inherit;\">Pour limiter la propagation du virus COVID-19, des mesures de confinement on \u00e9t\u00e9 mises en place par les autorit\u00e9s \u00e0 partir du mardi 17 mars \u00e0 midi.<\/span><br style=\"box-sizing: border-box;\" \/><span style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; outline: 0px; font-variant: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; font-family: arial, helvetica, sans-serif; font-size: 17px; font-style: inherit; font-weight: inherit;\">Cet article met en avant une am\u00e9lioration de la qualit\u00e9 de l\u2019air de l\u2019ordre de 20 \u00e0 30% dans l\u2019agglom\u00e9ration parisienne, cons\u00e9cutive \u00e0 une baisse des \u00e9missions de plus de 60% pour les oxydes d\u2019azote. Le long des axes de circulation, cet impact peut \u00eatre encore plus important. Il \u00e9tait en revanche peu visible pour les particules fines (PM10 et PM2.5) lors de ces premiers jours de confinement.<\/span><br style=\"box-sizing: border-box;\" \/><span style=\"box-sizing: border-box; margin: 0px; padding: 0px; border: 0px; outline: 0px; font-variant: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; font-family: arial, helvetica, sans-serif; font-size: 17px; font-style: inherit; font-weight: inherit;\">Autre bonne nouvelle, cette baisse des polluants de l\u2019air s\u2019accompagne d\u2019une baisse du dioxyde de carbone (C02), gaz \u00e0 effet de serre, soulignant les liens entre ces deux probl\u00e9matiques et le co-b\u00e9n\u00e9fice pour le climat de toute am\u00e9lioration de la qualit\u00e9 de l\u2019air.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7f84d3e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7f84d3e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-01e3654\" data-id=\"01e3654\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5834016 elementor-widget elementor-widget-text-editor\" data-id=\"5834016\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"box-sizing: border-box; margin: 0px 0px 20px; padding: 0px; border: 0px; outline: 0px; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; vertical-align: baseline; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400; color: #248cb5; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400;\">Avec la mise ne place des mesures de confinement, une baisse cons\u00e9quente des \u00e9missions d\u2019oxydes d\u2019azote a \u00e9t\u00e9 constat\u00e9e d\u00e8s la mise en place compl\u00e8te de cette action (baisse sup\u00e9rieure \u00e0 60% \u00e0 partir du mercredi 18 mars). Malgr\u00e9 une augmentation du chauffage r\u00e9sidentiel, cette baisse est li\u00e9e en grande partie \u00e0 la forte diminution du trafic routier et a\u00e9rien. Celle des autres secteurs d\u2019activit\u00e9 est moins quantifiable en raison du peu d\u2019informations disponibles. Pour les oxydes d\u2019azote, la baisse des \u00e9missions se traduit aussi au niveau des concentrations, avec une am\u00e9lioration de la qualit\u00e9 de l\u2019air respir\u00e9 de 20 \u00e0 30% selon les conditions m\u00e9t\u00e9orologiques rencontr\u00e9es entre le 17 et le 20 mars. Cette am\u00e9lioration est particuli\u00e8rement sensible le long des axes routiers o\u00f9 les niveaux rejoignent sur certaines stations d\u2019Airparif les niveaux de la pollution de fond\u00a0: en 40 ans de mesures d\u2019Airparif, cette situation sur les stations trafic ne s\u2019et jamais produite de mani\u00e8re aussi importante et sur autant de stations.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-329458ea elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"329458ea\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-14215a37\" data-id=\"14215a37\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7c73c0a8 elementor-widget elementor-widget-text-editor\" data-id=\"7c73c0a8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-family: arial, helvetica, sans-serif;\"><\/span><\/p>\n<p><br><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif;\"><\/span><\/p>\n<p class=\"has-text-align-center\"><span style=\"font-family: arial, helvetica, sans-serif;\"><em><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/nano-sense.com\/wp-content\/uploads\/2020\/03\/Tabl-article-Airparif.png\" alt=\"\" width=\"577\" height=\"197\"><\/em><\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif;\"><\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif;\"><em>Cartes moyennes de pollution au dioxyde d\u2019azote du 17 au 19 mars 2020&nbsp;: en situation normale, en situations de confinement et de diff\u00e9rence entre les deux.<\/em><\/span><\/p>\n<p><span style=\"font-family: arial, helvetica, sans-serif;\"><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9dc82f9 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9dc82f9\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a47d887\" data-id=\"a47d887\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bd878f3 elementor-widget elementor-widget-text-editor\" data-id=\"bd878f3\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px;\">En revanche, peu d\u2019impact a \u00e9t\u00e9 constat\u00e9 pour les particules qui sont issues davantage de sources et pour lesquelles la diminution du trafic n\u2019a pas compens\u00e9 l\u2019augmentation li\u00e9e au chauffage r\u00e9sidentiel et au maintien des activit\u00e9 agricoles, conjugu\u00e9s \u00e0 une m\u00e9t\u00e9orologie printani\u00e8re favorable \u00e0 la formation de particules observ\u00e9es dans plusieurs r\u00e9gions avoisinantes. De fait, la qualit\u00e9 de l\u2019air n\u2019a pas \u00e9t\u00e9 aussi bonne qu\u2019escompt\u00e9e mercredi 18 mars. Mais avec la forte diminution du trafic, les niveaux n\u2019ont pas augment\u00e9 au point de nous placer en \u00e9pisode de pollution, ce qui aurait vraisemblablement \u00e9t\u00e9 le cas en temps normal, avec des conditions similaires et un trafic normal.<\/span><\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\">\u00a0<\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px;\">Le changement de m\u00e9t\u00e9orologie \u00e0 partir du samedi 21 mars, conjugu\u00e9 \u00e0 la baisse tr\u00e8s cons\u00e9quente des \u00e9missions, notamment du trafic a\u00e9rien et routier, conduit \u00e0 une qualit\u00e9 de l\u2019air \u00ab bonne \u00bb en ce d\u00e9bit de deuxi\u00e8me semaine de confinement. Ces conditions m\u00e9t\u00e9orologiques typiques \u00e0 cette p\u00e9riode de l\u2019ann\u00e9e peuvent n\u00e9anmoins tr\u00e8s amen\u00e9es \u00e0 se reproduire.<\/span><\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\">\u00a0<\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px;\">Vous trouverez dans le PDF ci-dessous un r\u00e9sum\u00e9 des impacts sur la quantit\u00e9 de polluants rejet\u00e9s dans l\u2019atmosph\u00e8re et sur la qualit\u00e9 de l\u2019air respir\u00e9 par les franciliens<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-73300b8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"73300b8\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a7ea939\" data-id=\"a7ea939\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4e3a488 elementor-widget elementor-widget-heading\" data-id=\"4e3a488\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Documentations<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9bfd751 elementor-widget elementor-widget-text-editor\" data-id=\"9bfd751\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<figure style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><\/figure>\n<div style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\">\n<figure style=\"font-size: 17px;\"><a style=\"font-size: 17px; font-family: arial, helvetica, sans-serif; background-color: #ffffff; color: #248cb5;\" href=\"https:\/\/nano-sense.com\/wp-content\/uploads\/2020\/03\/Impact-sur-la-quantit%C3%A9-de-polluants-rejet%C3%A9s-dans-latmosph%C3%A8re.pdf\">Petit guide NanoSense sur les donn\u00e9es d&rsquo;Airparif<\/a><\/figure>\n<\/div>\n<div style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\">\n<figure style=\"font-size: 17px;\"><span style=\"color: #248cb5;\"><a style=\"font-family: arial, helvetica, sans-serif; color: #248cb5;\" href=\"https:\/\/nano-sense.com\/wp-content\/uploads\/2016\/11\/communique_presse_evaluation-impact-confinement-sur-air_25032020.pdf\">Communiqu\u00e9 de presse Airparif COVID-19<\/a><\/span><\/figure>\n<\/div>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px; color: #248cb5;\"><a style=\"font-size: 17px; color: #248cb5;\" href=\"https:\/\/nano-sense.com\/wp-content\/uploads\/2020\/03\/Document-guide-REHVA-COVID-19-par-lAICVF.pdf\">Document guide REHVA COVID-19 par l&rsquo;AICVF<\/a><\/span><\/p>\n<p style=\"font-variant-ligatures: normal; font-variant-caps: normal; font-family: 'Roboto Condensed'; font-size: 17px; font-style: normal; font-weight: 400;\"><span style=\"font-family: arial, helvetica, sans-serif; font-size: 17px; color: #248cb5;\"><a style=\"font-size: 17px; color: #248cb5;\" href=\"https:\/\/www.airparif.asso.fr\/\">Lien vers le site d&rsquo;Airparif<\/a><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Cet article met en avant une am\u00e9lioration de la qualit\u00e9 de l\u2019air de l\u2019ordre de 20 \u00e0 30% dans l\u2019agglom\u00e9ration parisienne.<\/p>\n","protected":false},"author":2,"featured_media":7507,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":"","_wp_rev_ctl_limit":""},"categories":[154,158],"tags":[],"class_list":["post-5615","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-bibliotheque","entry","has-media"],"aioseo_notices":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Une nette am\u00e9lioration de la Qualit\u00e9 de l&#039;Air Ext\u00e9rieur depuis la mise en place du confinement : Etude Airparif - NanoSense<\/title>\n<meta name=\"description\" content=\"Sonde multi-capteurs mesure la Qualit\u00e9 de l&#039;Air Int\u00e9rieur et contr\u00f4le la ventilation (sur demande) tout en \u00e9conomisant de l&#039;\u00e9nergie.\" 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