{"id":67462,"date":"2020-10-28T02:28:54","date_gmt":"2020-10-27T20:58:54","guid":{"rendered":"https:\/\/www.pranaair.com\/blog\/pm2-5-in-the-ambient-air-is-increasing\/"},"modified":"2023-02-20T17:39:40","modified_gmt":"2023-02-20T12:09:40","slug":"pm2-5-in-the-ambient-air-is-increasing","status":"publish","type":"post","link":"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/","title":{"rendered":"Beware! PM2.5 in the ambient air is increasing-Prana Air investigates"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #161616;color:#161616\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #161616;color:#161616\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#Why_are_winters_so_uncomfortable_in_terms_of_Particulate_Pollution\" >Why are winters so uncomfortable in terms of Particulate Pollution?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#Does_that_mean_blaming_Dussehra_for_the_rising_pollution_levels_in_Delhi_is_wrong\" >Does that mean blaming Dussehra for the rising pollution levels in Delhi is wrong?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#Whats_next\" >What&#8217;s next?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#An_unhealthy_beginning\" >An unhealthy beginning<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#The_severity_increases\" >The severity increases<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#A_breathable_plummet\" >A breathable plummet<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#Alas_Not_again\" >Alas! Not again.<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.pranaair.com\/blog\/us\/pm2-5-in-the-ambient-air-is-increasing\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/nav><\/div>\n<p style=\"text-align: justify;\"><em>Have you observed any changes in the visibility outside lately? Do you feel irritation in your nose and throat whenever you go out? Are you cancelling your outings and preferring to stay indoors nowadays? If the answer to all these questions is yes, then you are falling prey to the winter pollution that is steadily spreading its roots since the beginning of this month. Its impact is not really unnoticeable. The concentration of PM2.5 in the ambient air is the main culprit, and <a href=\"https:\/\/www.pranaair.com\/us\/\">Prana Air<\/a> decided to investigate how and why!\u00a0<\/em><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Why_are_winters_so_uncomfortable_in_terms_of_Particulate_Pollution\"><\/span>Why are winters so uncomfortable in terms of Particulate Pollution?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">The levels of air pollutants, like particulate matter, start to rise with the onset of winters. This happens because of the combination of two phenomena- Winter Inversion and Vertical Mixing.<\/p>\n<p style=\"text-align: justify;\">Various sources release varied concentrations of air-contaminants that remain suspended into the ambient air. During summers, the air in the lower part of the atmosphere is light and warm. Due to this, it rises upwards with ease and carries these pollutants in the subsequent upper layers. The upper layers of the atmosphere contain relatively cleaner air, and thus, the pollutants move farther away from the ground. This is called vertical mixing.<\/p>\n<p style=\"text-align: justify;\">Atmospheric inversion occurs in winters. The normal conditions reverse themselves, and air near the lower atmosphere is cooler and denser. The relatively warmer air of the upper layers, hence, acts as an atmospheric lid. This lid entraps the pollutants within the cold layer and evades their atmospheric dispersion. Therefore, the vertical mixing occurs in the lower layer itself.<\/p>\n<p style=\"text-align: justify;\">At constant emission rates and concentration of pollutants, the lesser the temperature, the more is the pollution.<\/p>\n<p style=\"text-align: justify;\">As a result of these events, the pollution levels are lesser in summers as compared to winters, provided the spatial and meteorological remain the same. You can observe a similar effect during winter<br \/>\nafternoons. The increase in heat levels down pollution slightly.<\/p>\n<p style=\"text-align: justify;\">The early mornings and the nights are the worst. The impact of inversion is visibly evident, which is why the air quality plummets during these hours.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Does_that_mean_blaming_Dussehra_for_the_rising_pollution_levels_in_Delhi_is_wrong\"><\/span>Does that mean blaming Dussehra for the rising pollution levels in Delhi is wrong?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">No. Festival of Dussehra exacerbated the problem of air pollution in the state.<\/p>\n<p style=\"text-align: justify;\">Air quality is an ambiguous attribute. Numerous spatial, temporal, atmospheric, anthropological, and meteorological factors contribute to the air quality of a particular area.<\/p>\n<p style=\"text-align: justify;\">People burnt hundreds of effigies locally, to mark the festivities of the triumph of good over evil. However, it increased particulate emissions. People also lit firecrackers which contributed to the sudden spike in the levels of pollutants.<\/p>\n<p style=\"text-align: justify;\">Many areas of Delhi-NCR witnessed a rise in the pollution levels even as wind speed- a crucial meteorological determinant- remained low.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Whats_next\"><\/span>What&#8217;s next?<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Experts have predicted that the pollution levels will continue increasing as the days will progress. Thus, we decided to run an immediate follow-up on the information.<\/p>\n<p style=\"text-align: justify;\">The following figure contains the data accessed from the official website of the Central Pollution Control Board (CPCB) on October 26, 2020. Rohini, Delhi was entered as the target location because this monitoring station was the nearest to our premise (2.2 km away).<\/p>\n<p style=\"text-align: justify;\">As seen in the figure, PM2.5 was the most prominent pollutant during the day, followed by PM10. The concentration of PM2.5 peaked during the early hours of the day, and late hours of the night. Evening hours witnessed a decreasing trend in PM2.5 concentration.<\/p>\n<p style=\"text-align: justify;\">We also observed the real-time concentrations of PM2.5 with the help of our <a href=\"\/?page_id=56355\">Pocket Monitor<\/a> over a period of 12 hrs throughout the day. We photographed the readings at different temporal intervals, viz. morning, afternoon, evening and night.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"An_unhealthy_beginning\"><\/span>An unhealthy beginning<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure id=\"attachment_13788\" aria-describedby=\"caption-attachment-13788\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13788 size-full\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2020\/10\/unhealthy-pm2.5-monitoring-in-delhi.jpg\" alt=\"unhealthy pm2.5 monitoring in delhi\" width=\"700\" height=\"500\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/unhealthy-pm2.5-monitoring-in-delhi.jpg 700w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/unhealthy-pm2.5-monitoring-in-delhi-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption id=\"caption-attachment-13788\" class=\"wp-caption-text\"><em><span style=\"font-family: 'book antiqua', palatino, serif;\">The concentration of PM2.5 in the ambient air at 9:30 a.m.<\/span><\/em><\/figcaption><\/figure>\n<p style=\"text-align: justify;\">The first reading was timed at 9:30 a.m.<\/p>\n<p style=\"text-align: justify;\">The visibility from the terrace of our building was very low. The concentration of PM2.5 in the ambient air stood at 302 micrograms per cubic metre. Air was not breathable, and we felt thankful towards the <a href=\"\/?page_id=16136\">masks<\/a> we wore.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"The_severity_increases\"><\/span>The severity increases<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure id=\"attachment_13792\" aria-describedby=\"caption-attachment-13792\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13792 size-full\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2020\/10\/afternoon-pm2.5-monitoring-in-delhi.jpg\" alt=\"afternoon concentration of PM2.5 in the ambient air in Delhi\" width=\"700\" height=\"500\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/afternoon-pm2.5-monitoring-in-delhi.jpg 700w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/afternoon-pm2.5-monitoring-in-delhi-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption id=\"caption-attachment-13792\" class=\"wp-caption-text\"><em><span style=\"font-family: 'book antiqua', palatino, serif;\">The concentration of PM2.5 in the ambient air at 12:30 p.m.<\/span><\/em><\/figcaption><\/figure>\n<p style=\"text-align: justify;\">We took the second reading at 12:30 p.m.<\/p>\n<p style=\"text-align: justify;\">The visibility had worsened. The concentration of PM2.5 in the ambient air stood at 368 micrograms per cubic metre. We started missing indoors as soon as we stepped out. As soon as we were done, we rushed back inside.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"A_breathable_plummet\"><\/span>A breathable plummet<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure id=\"attachment_13795\" aria-describedby=\"caption-attachment-13795\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13795 size-full\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2020\/10\/evening-pm2.5-monitoring-in-delhi.jpg\" alt=\"Evening concentration of PM2.5 in the ambient air in Delhi\" width=\"700\" height=\"500\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/evening-pm2.5-monitoring-in-delhi.jpg 700w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/evening-pm2.5-monitoring-in-delhi-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption id=\"caption-attachment-13795\" class=\"wp-caption-text\"><em><span style=\"font-family: 'book antiqua', palatino, serif;\">The concentration of PM2.5 in the ambient air at 5:30 p.m.<\/span><\/em><\/figcaption><\/figure>\n<p style=\"text-align: justify;\">Evening literally brought a breath of fresh air.<\/p>\n<p style=\"text-align: justify;\">We took the reading at 5:30 p.m. Air was better than what we were breathing since the morning. The view was moderately visible. The concentration of PM2.5 in the ambient air stood at 90 micrograms per cubic metre.<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Alas_Not_again\"><\/span>Alas! Not again.<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<figure id=\"attachment_13796\" aria-describedby=\"caption-attachment-13796\" style=\"width: 700px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-13796 size-full\" src=\"https:\/\/www.pranaair.com\/wp-content\/uploads\/2020\/10\/night-pm2.5-monitoring-in-Delhi.jpg\" alt=\"Night concentration of PM2.5 in the ambient air in Delhi\" width=\"700\" height=\"500\" srcset=\"https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/night-pm2.5-monitoring-in-Delhi.jpg 700w, https:\/\/www.pranaair.com\/blog\/wp-content\/uploads\/2020\/10\/night-pm2.5-monitoring-in-Delhi-300x214.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><figcaption id=\"caption-attachment-13796\" class=\"wp-caption-text\"><em><span style=\"font-family: 'book antiqua', palatino, serif;\">The concentration of PM2.5 in the ambient air at 9:30 p.m.<\/span><\/em><\/figcaption><\/figure>\n<p style=\"text-align: justify;\">We took the last reading at 9:30 p.m.<\/p>\n<p style=\"text-align: justify;\">The concentration of PM2.5 in the ambient air stood at 290 micrograms per cubic metre.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">All of the readings were in more or less sync with the data from the CPCB website.<\/p>\n<p style=\"text-align: justify;\">The situation is worrisome. We cannot control the phenomenon of winter inversion. However, we need to take immediate action to limit the factors that we can- the emissions.<\/p>\n<p style=\"text-align: justify;\">We need to monitor and control the rate of our emissions which may increase the pollutant concentrations in the atmosphere.<\/p>\n<p style=\"text-align: justify;\">The festive season is around the corner. We need to ensure that we celebrate in a manner that does not exacerbate the pollution-situation.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you observed any changes in the visibility outside lately? Do you feel irritation in your nose and throat whenever&hellip;<\/p>\n","protected":false},"author":6,"featured_media":67463,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[456,494,461],"tags":[595,467,596,597,598,599],"class_list":["post-67462","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-pollution-us","category-article-us","category-outdoor-air-quality-us","tag-air-contaminants-us","tag-air-pollution-us","tag-air-pollution-in-delhi-us","tag-air-quality-us","tag-delhi-pollution-us","tag-outdoor-air-pollution-us"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.9 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Beware! PM2.5 in the ambient air is increasing-Prana Air Experiments<\/title>\n<meta name=\"description\" content=\"Winter Pollution has upped its game. 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