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Need air pollution subsidy for women to move from solid fuels to LPG: Sunita Narain

Eminent environmentalist Sunita Narain has stressed the need for an “air pollution subsidy” programme to make households move from solid fuels to LPG and reduce the burden on the health of poor women. She also said air pollution is a political issue and people won’t get the air they deserve if “we don’t get the politics of development right”. “The government’s Ujjawala programme is an excellent effort and Prime Minister (Narendra Modi) said ‘I am taking the subsidy from the rich and giving it to the poor and I am also doing it to prevent women from getting exposed to air pollution’. This is an excellently structured programme. “LPG cylinder has reached the people, but they are not buying a refill… The problem is we do not value the labour of women,” Narain said in response to a question at a discussion on air pollution. Solid fuel is not a predominant source when it comes to pollution in Delhi. However, it’s a very prime source when it comes to women’s health in rural areas in north India where the inversion of air happens, she said. VDO.AI An inversion represents a layer of the atmosphere that gets warmer with height. A layer of cooler air is trapped near the ground by a layer of warm air above the surface. When the air cannot rise, pollutant concentration increases. “Unless you have inclusive growth and the poor women can move from chulha to cleaner fuel, you will not get the air we deserve. “So, air quality is a contested issue, it’s a political issue… if we don’t get the politics of development right, we won’t get the air we deserve… that’s where politics and environment come together when it comes to air pollution,” Narain, the director-general of the green think tank Centre for Science and Environment, said. “The government should come up with an air pollution subsidy programme in all non-attainment areas in India. This subsidy should be given to all households to move from solid fuels to LPG,” she suggested, adding, “On a pan-India basis, my suggestion would be to give people electricity to cook food.” Non-attainment areas are those that have fallen short of the National Ambient Air Quality Standards for over five years. The Pradhan Mantri Ujjwala Yojana, launched on May 1, 2016, aims to provide clean fuel to women below the poverty line to prevent health-related issues. Under the scheme, financial support of Rs 1,600 is provided for each LPG connection for BPL households. The connections are given in the name of the women head of the households. The scheme is being implemented using the money saved in LPG subsidy through the ‘give-it-up’ campaign. People who have given up subsidies are buying LPG cylinders at market price. Narain also said the overall pollution from electric vehicles is not lower than BS VI-compliant vehicles. “Only thing is you’ve moved pollutants from Delhi to Chhattisgarh where power plants are. “So, if we are looking to find a solution from electric vehicles (EV) we need to move our power plants to cleaner coal or move them to gas or renewables to reduce emissions. The overall impact of EVs will be much better if the electricity is clean,” she said. However, EVs will play a much better role in Delhi as they do not have the factor of local pollution compared to diesel and petrol vehicles. “Still, you need to transform mobility if you want to have a greater impact of EVs. Bringing in a few cars and autos won’t work. We will see an impact if we have all cars, taxis, autos and buses running on electricity,” Narain said. She also said there has been a lot of effort to complicate the sources “so that we do not act (against air pollution)”. “We need more knowledge, science, we need to know more sources of pollution. But we first need to act on what we know. “The inability to act has also a lot to do with the fact that it is an extremely politically contested issue… Air pollution is not a very polite issue which can be discussed very gently because it has interests which are in the interest of air pollution versus what needs to be done,” the environmentalist said. Narain said a lot has been done to improve the quality of fuel and vehicle technology. But “now the problem is the very large number of vehicles on the roads”, she said. “It’s simple science. If you keep adding vehicles on the roads, you end up negating the impact of cleaning the fuel and vehicles. We need a complete reinvention of mobility, which we have not even begun to address,” she said. PTI GVS NB NB NSD NSD

सीएसई का खुलासा : सर्दी में प्रदूषण के लिए स्थानीय स्रोत 80 फीसदी जिम्मेदार, शोधकर्ताओं ने दी चेतावनी

दिल्ली-एनसीआर में हर साल सर्दी में हवा के दमघोंटू होने पर पराली का धुएं आरोप प्रत्यारोप की राजनीति का आधार बनता है। इसके विपरीत बीते वर्ष की सर्दी में दमघोंटू हवा के लिए स्थानीय स्तर का प्रदूषण 80 फीसदी जिम्मेदार पाया गया है। इस संबंध में सेंटर फॉर साइंस एंड इनवायरमेंट (सीएसई) ने विश्लेषण किया है। शोधकर्ताओं ने चेतावनी दी है कि अगर इस पर तुरंत कार्रवाई नहीं की गई तो आने वाले वर्षों में यह प्रवृत्ति और खराब हो सकती है। सीएसई ने एक अक्तूबर 2021 से 28 फरवरी 2022 के दौरान दिल्ली-एनसीआर में निगरानी स्टेशनों से वास्तविक समय के आंकड़ों का विश्लेषण किया है। इससे पता चलता है कि इस सर्दी में विभिन्न चरणों में भारी और लंबे समय तक बारिश के बावजूद धुंध और प्रदूषण के स्तर में वृद्धि हुई है। इस दौरान कोरोना महामारी के कारण लगने वाले लॉकडाउन और बारिश के कारण कुछ दिन संतोषजनक श्रेणी के भी दर्ज किए गए हैं, जो कि बीते तीन सीजन में दर्ज नहीं हुए। सीएसई के कार्यकारी निदेशक अनुमिता चौधरी कहती हैं कि बढ़े हुए प्रदूषण के स्तर और स्मॉग एपिसोड प्रणालीगत प्रदूषण का एक प्रमाण है, जो सभी क्षेत्रों में प्रदूषण नियंत्रण के लिए अपर्याप्त बुनियादी ढांचे और प्रणालियों के कारण क्षेत्र में जारी है। इसे तभी काबू में किया जा सकता है जब साल भर की कार्रवाई सभी क्षेत्रों और क्षेत्र में अधिक कठोर और एक समान हो जाए। स्वच्छ वायु मानकों को पूरा करने के लिए कार्रवाई का प्रदर्शन आधारित होना चाहिए। सीएसई के अर्बन लैब एनालिटिक्स के कार्यक्रम प्रबंधक अविकल सोमवंशी कहते हैं कि भले ही पूरे क्षेत्र में मौसमी औसत में काफी भिन्नता है, लेकिन बड़ी दूरी के बावजूद इस क्षेत्र में सर्दियों के प्रदूषण के एपिसोड खतरनाक रूप से उच्च हैं। विश्लेषण में प्रयुक्त डाटा विश्लेषण के लिए केंद्रीय प्रदूषण नियंत्रण बोर्ड (सीपीसीबी) के 81 वायु गुणवत्ता निगरानी स्टेशनों द्वारा दर्ज आंकड़ों का विश्लेषण किया है। साथ ही खेत में पराली धुएं के आंकड़े सिस्टम ऑफ एयर क्वालिटी एंड वेदर फॉरकास्टिंग एंड रिसर्च (सफर) से लिए गए हैं। मौसम के आंकड़े भारतीय मौसम विभाग के सफदरजंग मौसम केंद्र से लिए गए हैं। पराली के धुएं का 48 फीसदी तक योगदान सफर के अनुसार, उत्तरी राज्यों में पराली के धुएं ने 10 अक्तूबर 2021 से दिल्ली के पीएम 2.5 स्तर में योगदान देना शुरू कर दिया था। इसका प्रभाव 30 नवंबर 2021 तक रिकॉर्ड किया गया। इन 52 दिनों के दौरान प्रदूषण में इसका योगदान एक फीसदी से 48 फीसदी के बीच रहा। इस सर्दी पराली की आग का वायु गुणवत्ता पर असर पिछले दो सर्दियों की तुलना में चार दिन कम था। बीते वर्ष सर्दी में 25 दिन गंभीर स्तर की वायु गुणवत्ता दर्ज की गई। वहीं, इससे पिछली सर्दियों में ऐसे 23 दिन दर्ज हुए थे।

सर्दी में रिकार्ड बारिश के बाद भी दिल्ली-एनसीआर के वायु प्रदूषण में मामूली सुधार, मौसम ने बिगाड़ा हवा का हाल

नई दिल्ली, राज्य ब्यूरो। बीती सर्दी के मौसम में रिकार्ड बारिश के बावजूद दिल्ली-एनसीआर के वायु प्रदूषण में मामूली सुधार देखा गया। बुधवार को जारी की गई सेंटर फार साइंस एंड एनवायरनमेंट (सीएसई) की एक रिपोर्ट के अनुसार, अक्टूबर 2021 व फरवरी 2022 के बीच प्रदूषण का स्तर तय मानकों से कहीं अधिक था। रिपोर्ट में कहा गया है कि पराली के धुएं से इतर प्रदूषण के अन्य स्नोतों का मौसमी औसत पीएम 2.5 स्तर का लगभग 80 प्रतिशत हिस्सा रहा। रिपोर्ट में कहा गया है कि 217 मिमी की औसत वर्षा के साथ दिल्ली में पीएम 2.5 का औसत स्तर 172 माइक्रोग्राम प्रति घन मीटर, जबकि सर्वाधिक स्तर 516 माइक्रोग्राम प्रति घन मीटर रहा। वर्ष 2021-21 की सर्दी के मौसम में यह क्रमश: 189 और 542 माइक्रोग्राम प्रति घन मीटर था, जबकि बारिश 114 मिमी थी। बढ़े हुए प्रदूषण के स्तर और धुंध के एपिसोड प्रणालीगत प्रदूषण का सुबूत है, जो सभी क्षेत्रों में प्रदूषण नियंत्रण के लिए अपर्याप्त बुनियादी ढांचे और प्रणालियों के कारण इस क्षेत्र में जारी है। सीएसई की कार्यकारी निदेशक अनुमिता राय चौधरी कहती हैं, ‘इस पर तभी काबू पाया जा सकता है जब साल भर की कार्रवाई सभी क्षेत्रों और क्षेत्र में अधिक कठोर और समान हो जाए।’ रिपोर्ट में कहा गया है कि पराली जलाने से पीएम 2.5 का औसत स्तर 28 माइक्रोग्राम प्रति घन मीटर प्रति दिन था, जबकि बाकी प्रदूषण के लिए अन्य स्रोत जिम्मेदार रहे। इस रिपोर्ट के मुताबिक एनसीआर में ‘गंभीर’ श्रेणी की वायु गुणवत्ता वाले दिनों की संख्या सबसे अधिक दिल्ली में ही थी। दिल्ली में इस सर्दियों के दौरान ‘गंभीर’ श्रेणी की हवा वाले 25 दिन दर्ज किए गए। इसके बाद गाजियाबाद में 16 दिन का रिकार्ड रहा। नोएडा, फरीदाबाद और गुरुग्राम में 15, 13 और पांच दिन दर्ज किए गए।’ इसमें आगे कहा गया है कि दिल्ली के 38 वायु गुणवत्ता निगरानी स्टेशनों में से 30 में इस सर्दी में मौसमी औसत में गिरावट दर्ज की गई है। हालांकि, लोधी रोड और रोहिणी में प्रदूषण उच्चतम शिखर पर दर्ज किया गया। वजीरपुर एकमात्र हाटस्पाट था, जिसने हवा की गुणवत्ता में गिरावट दर्ज की। वजीरपुर को छोड़कर, दिल्ली-एनसीआर की हाटस्पाट सूची के सभी स्थानों में पिछली सर्दियों की तुलना में मौसमी पीएम 2.5 के स्तर में गिरावट देखी गई। 131 माइक्रोग्राम प्रति घन मीटर के मौसमी औसत के साथ बहादुरगढ़ हाटस्पाट में सबसे कम प्रदूषित बना हुआ है, जबकि जहांगीरपुरी मौसमी औसत 252 माइक्रोग्राम प्रति घन मीटर के साथ दिल्ली में सबसे गंदा था। एनसीआर की बात करें तो रिपोर्ट बताती है कि फरीदाबाद और गुरुग्राम में मौसमी औसत में बढ़ोतरी हुई है, जबकि गाजियाबाद और नोएडा में गिरावट देखी गई है। गाजियाबाद में लोनी 247 माइक्रोग्राम प्रति घन मीटर के मौसमी औसत के साथ उभरते हाटस्पाट्स में सबसे प्रदूषित था। सीएसई की रिपोर्ट दिल्ली-एनसीआर में तय मानकों से बहुत अधिक था अक्टूबर 2021 और फरवरी 2022 के बीच प्रदूषण का स्तर एनसीआर में गंभीर श्रेणी की वायु गुणवत्ता वाले सर्वाधिक दिन दिल्ली में ही दर्ज किए गए सीएसई निदेशक ने कहा, प्रदूषण पर काबू पाने के लिए पूरे साल करनी होगी कठोर कार्रवाई इस साल मार्च में बारिश बिल्कुल नहीं हुई। दूसरी तरफ हवा की दिशा पश्चिम ज्यादा रही। मध्य पाकिस्तान और राजस्थान से धूल भरी गर्म हवाएं लगातार चलती रही हैं, जिससे प्रदूषक कण बढ़े। स्थानीय कारक तो हमेशा अपनी भूमिका निभाते ही हैं। डा. दीपांकर साहा पूर्व अपर निदेशक, सीपीसीबी

Delhi: Local and regional sources more responsible for air pollution in winter than stubble burning, reveals study

Among cities in the National Capital Region (NCR), Delhi recorded the most “severe” air days this season (25 days), followed by Ghaziabad (16 days). The overall contribution of local and regional sources to PM 2.5 levels in the national capital during winter is higher than the contribution from stubble burning, an analysis of air pollution levels in the past winter by the Centre for Science and Environment (CSE) has revealed. “Winter gets smoggy even without the stubble smoke,” notes the analysis by Anumita Roychowdhury and Avikal Somvanshi at CSE. In the 52 days in October, November and December last year, the average concentration of stubble fire smoke in Delhi was 28 ug/m3 per day. The contribution of other sources was 151 ug/m3, more than 80% of the average concentration of 179 ug/m3. This was similar to previous winters when an average of 32 ug/m3 was found to be from stubble burning, and 159 ug/m3 from other sources. The analysis uses data from the SAFAR forecasting system, which provides the contribution of stubble smoke as a percentage, to arrive at these figures. “Smoke from stubble fires only tips over the local-regional pollution load, which is already elevated due to [winter] inversion, to severe category,” the report states, adding that smog episodes are recorded even in late December when stubble burning doesn’t happen. The average PM2.5 level this winter, from October 1 to February 28, was 172 ug/m3, similar to 173 ug/m3 in 2019-20, and lower than the 189 ug/m3 in 2020-21. The peak PM 2.5 concentration this winter (516 ug/m3) was lower than the two preceding ones — 542 ug/m3 in 2020-21, and 549 ug/m3 in 2019-20. The analysis states that this is only a marginal improvement in Delhi’s air quality, despite it being the wettest winter in over a century. The study also throws light on the long smog episodes this winter — especially a 10-day period that started around Diwali and was the longest one in the last three years. Another winter smog episode was observed from December 21, lasting for nine days and much longer than the previous winter’s that remained for only three. The average PM 2.5 concentration during the December smog episode was 340 ug/m3, even higher than the one around Diwali when the average was 318 ug/m3. “Relatively slow dissipation of smog episodes this year compared to previous year points towards increase in the overall pollution load in the larger air shed (all the gains of lockdowns lost) and ineffectiveness of ad-hoc pollution control efforts,” the report states, adding that the higher intensity of the smog episode in December also points towards increased contribution of local sources. The contribution of local sources is also highlighted by the large variations in pollution levels at different monitoring stations in the city — the average PM2.5 concentration this winter was highest at Jahangirpuri (252 ug/m3) and lowest at Aya Nagar (117 ug/m3). Stations at Anand Vihar, Wazirpur, Mundka, Rohini and Ashok Vihar also recorded an average above 200 ug/m3. Among cities in the National Capital Region (NCR), Delhi recorded the most “severe” air days this season (25 days), followed by Ghaziabad (16 days). Smog episodes were also found to be more intense and longer in Delhi. Though Delhi recorded an improvement in seasonal average PM 2.5 concentration this winter, other NCR towns like Hapur, Bhiwani and Manesar witnessed deteriorating air quality this season.

https://www.lokmattimes.com/national/regional-sources-bigger-contributor-than-stubble-smoke-to-delhi-ncr-winter-pollution-cse/

Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday.</p><div id="div-ub-lokmat"><script> window.unibots = window.unibots || { cmd: [] }; unibots.cmd.push(()=>{ unibotsPlayer('lokmat'); });</script> </div><p>While there had been a minor drop in the seasonal level compared to previous winters, the level is still extremely high, and far from meeting the safety standards, the CSE researchers said, warning that if not acted upon immediately, this trend can worsen in the coming years negating the downward dip of the pandemic years.</p><div id="inArticle1" class="inarticleAd" style="margin:0px auto; width:300px; height:250px; text-align:center;"><div id="div-gpt-ad-1636978810195-0" data-google-query-id="CIbj8LPj7_YCFYQJ1QodGdYD5A" style="display: none;"><div id="google_ads_iframe_/45238043/English_Generic_Article_Mobile_Desktop_300x250_1_0__container__" style="border: 0pt none; width: 300px; height: 0px;"></div></div><script type="text/javascript">googletag.cmd.push(function() { googletag.display('div-gpt-ad-1636978810195-0'); });</script></div><p>The CSE carried out the analysis of real-time data from monitoring stations in Delhi-NCR for the entire winter period - starting from October 1, 2021 till February 28, 2022.</p><p>"Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. This can be tamed only if round the year action becomes more stringent and uniform across sectors and the region," said Anumita Roychowdhury, Executive Director, Research and Advocacy, CSE.</p><div id="inArticle2" class="inarticleAd" style="margin:0px auto; width:300px; height:250px; text-align:center;"><div id="div-gpt-ad-1636978839832-0" data-google-query-id="CPOS8bPj7_YCFRLraAodYVEJQg" style="display: none;"><div id="google_ads_iframe_/45238043/English_Generic_Article_Mobile_Desktop_300x250_2_0__container__" style="border: 0pt none; width: 300px; height: 0px;"></div></div><script type="text/javascript">googletag.cmd.push(function() { googletag.display('div-gpt-ad-1636978839832-0'); });</script></div><p>Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: "Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke."</p><p>According to SAFAR, smoke from the stubble fire in northern states started contributing to Delhi's PM2.5 level from October 10, 2021 and ended on November 30, 2021. During these 52 days, the percentage contribution varied between one per cent and 48 per cent, with the latter being reported on November 7, 2021. This winter's stubble fire season was four days shorter than the ones in the previous two winters. The number of days when percentage contribution was over 40 per cent was the same this winter as last year: just two days.</p><div id="inArticle3" class="inarticleAd" style="margin:0px auto; width:300px; height:250px; text-align:center;"><div id="div-gpt-ad-1636978869388-0" data-google-query-id="CMX58LPj7_YCFQj7aAodHDYFHg" style="display: none;"><div id="google_ads_iframe_/45238043/English_Generic_Article_Mobile_Desktop_300x250_3_0__container__" style="border: 0pt none; width: 300px; height: 0px;"></div></div><script type="text/javascript">googletag.cmd.push(function() { googletag.display('div-gpt-ad-1636978869388-0'); });</script></div><p>But if looked at from absolute concentration terms, this year had twice the number of days when the PM2.5 load from stubble fire was high enough to plunge Delhi's air quality into 'very poor' category on its own. Further, these high contribution load days happened in a cluster, which indicates that the biggest bulk burning instances took place in a span of fewer days this year than in the previous years. This might be due to the extended monsoon which reduced the rain-free period before the sowing of the wheat crop.</p><p>The city-wide winter average for Delhi stood at 172 micro-gram per cubic metre, which is identical to the seasonal average of the winter of 2019-20 but is nine per cent lower than the seasonal average of 2020-21 winter. The seasonal peak was about five per cent lower than both preceding winters.</p><!-- break-4 --><p>Number of days with severe or worse air quality bounced back to pre-Covid levels: This winter, 25 days had the city-wide average in 'severe' or 'worse' AQI category up from 23 such days in the previous winter and on par with 25 days in the winter of 2019-20.</p><p>The CSE used data as recorded by 81 air quality monitoring stations under the Continuous Ambient Air Quality Monitoring System (CAAQMS) of the Central Pollution Control Board (CPCB) while the farm stubble fire data was sourced from System of Air Quality and Weather Forecasting and Research (SAFAR). Weather data was sourced from the Safdarjang weather station of Indian Meteorological Department (IMD).</p><p>Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor</p>

Regional Sources Bigger Contributor than Stubble Smoke to Delhi-NCR Winter Pollution, Claims CSE

Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday. While there had been a minor drop in the seasonal level compared to previous winters, the level is still extremely high, and far from meeting the safety standards, the CSE researchers said, warning that if not acted upon immediately, this trend can worsen in the coming years negating the downward dip of the pandemic years. The CSE carried out the analysis of real-time data from monitoring stations in Delhi-NCR for the entire winter period - starting from October 1, 2021 till February 28, 2022. “Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. This can be tamed only if round the year action becomes more stringent and uniform across sectors and the region," said Anumita Roychowdhury, Executive Director, Research and Advocacy, CSE. Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: “Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke." According to SAFAR, smoke from the stubble fire in northern states started contributing to Delhi’s PM2.5 level from October 10, 2021 and ended on November 30, 2021. During these 52 days, the percentage contribution varied between one per cent and 48 per cent, with the latter being reported on November 7, 2021. This winter’s stubble fire season was four days shorter than the ones in the previous two winters. The number of days when percentage contribution was over 40 per cent was the same this winter as last year: just two days.

Delhi: Winter pollution dips a little, but still way off safe mark, says study

NEW DELHI: The national capital region, including Delhi, saw only marginal improvement in air pollution this winter despite receiving one of the highest recorded rainfalls. Track the pollution level in your city According to a report by Centre for Science and Environment (CSE), the pollution levels, between October 2021 and February 2022, were extremely high and far from meeting the safety standards. The non-stubble sources accounted for almost 80% of the seasonal average PM2.5 levels. The report stated that even with an average rainfall of 217mm, Delhi’s average and peak PM2.5 levels this winter were 172ug/m3 and 516ug/m3 as against 189 and 542ug/m3 and 114mm rainfall in the previous winter. Though at a declining trend, Delhi still had the highest number of days with “severe” air quality. “Delhi recorded 25 days with ‘severe’ air quality. It was followed by Ghaziabad recording 16 days. Noida, Faridabad and Gurgaon recorded 15, 13 and five days,” the report stated, adding that Ghaziabad was the most polluted among the four major satellite towns. “Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued due to inadequate infrastructure for pollution control in all sectors. This can be tamed only if round-the-year action becomes more stringent and uniform across sectors and the region,” says Anumita Roychowdhury, executive director of CSE. The report stated that the average PM2.5 from stubble burning was 28ug/m3 per day while the rest was of “non-stubble origin”. According to the report, 30 out of the 38 air quality monitoring stations in Delhi recorded a declining trend, but Lodhi Road and Rohini registered the highest peak pollution. “Wazirpur was the only recognised hotspot that registered a worsening air quality. All other locations on the Delhi-NCR pollution hotspot list saw a decline... compared with last winter,” it stated. Bahadurgarh, with an average of 131ug/m3, continues to be the least polluted hotspot, while Jahangirpuri, with 252ug/m3 average, was the dirtiest in Delhi.

Winter air poor despite rain

Despite its wettest winter in several decades, the Capital only saw a marginal reduction in pollution this time around as compared to last year, according to the Centre for Science and Environment (CSE). Despite recording its wettest winter in the last several decades, Delhi only saw a marginal reduction in pollution this time around as compared to last year, found an analysis released by the Centre for Science and Environment (CSE) on Wednesday. Analysing a five-month period from October 1, 2021, to February 28, 2022, the city-wide average PM 2.5 level was found to be 172 microgramme per cubic metre (μg/m3) -- over four times the national annual standard of 40μg/m3 and the daily standard of 60μg/m3. This is 9% lower than the seasonal average during the corresponding period in 2020-21 (189μg/m3), and similar to the pollution level in 2019-20 (173μg/m3). The 2018-19 winter saw an average PM2.5 level of 190μg/m3. The analysis also found the seasonal peak PM 2.5 level (516μg/m3) to be 5% lower than in 2020-21 (542μg/m3) and 2019-20 (549μg/m3). “Meteorologically, this winter was the wettest in recent years with almost two-three fold more rainfall compared to previous winters, bulk of which happened in January, making it the least polluted January since real-time air quality monitoring started in the city. But, this meteorological advantage did not give much reprieve to the city as a rapid build-up in between rainy spells and formation of smog episodes during the rainless periods kept overall seasonal average very high,” said the analysis. Delhi recorded 217mm of rainfall during this winter period -- nearly double of the 114mm recorded in the previous winter. The Capital was 74mm during the 2019-20 winter and 86mm in 2018-19 winter.

Marginal improvement in Delhi-NCR's air quality this winter season despite record rain

Delhi recorded 25 "severe" air quality days this winter season – equalling the number of such days in 2019-20 – despite heavy and prolonged rains, according to an analysis by the Centre for Science and Environment. The city also saw two days of 'good' air and seven days of 'satisfactory' air this winter, which is an improvement from the last winter season when no such low-pollution days were recorded. This high variability in air quality this winter can be attributed to the increased number of heavy rainfall days and colder-than-usual weather. The winter average of PM2.5 for Delhi stood at 172 micrograms per cubic metre (μg/m3), which is equal to the average of the 2019-20 winter season but is 9 per cent lower than the seasonal average of the 2020-21 winter. Meteorologically, this winter was the wettest in recent years with almost two-three times more rainfall, bulk of which happened in January, compared to previous winters, making it the least polluted January since real-time air quality monitoring started in the city. But this meteorological advantage did not give much reprieve to the city as a rapid build-up in between rainy spells and the formation of smog episodes during rainless periods kept the overall seasonal average very high, the green think tank said. "Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. "This can be tamed only if round-the-year action becomes more stringent and uniform across sectors and the region. Action has to be performance-based to meet the clean air standards," said Anumita Roychowdhury, executive director, Research and Advocacy, CSE. Avikal Somvanshi, programme manager, Urban Lab Analytics, CSE, said, "Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances." "This is the challenge of this landlocked region. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke," Somvanshi said. PTI GVS DIV DIV

Marginal improvement in Delhi-NCR’s air quality this winter season despite record rain

Delhi recorded 25 “severe” air quality days this winter season – equalling the number of such days in 2019-20 – despite heavy and prolonged rains, according to an analysis by the Centre for Science and Environment. The city also saw two days of ‘good’ air and seven days of ‘satisfactory’ air this winter, which is an improvement from the last winter season when no such low-pollution days were recorded. This high variability in air quality this winter can be attributed to the increased number of heavy rainfall days and colder-than-usual weather. The winter average of PM2.5 for Delhi stood at 172 micrograms per cubic metre (μg/m3), which is equal to the average of the 2019-20 winter season but is 9 per cent lower than the seasonal average of the 2020-21 winter. Meteorologically, this winter was the wettest in recent years with almost two-three times more rainfall, bulk of which happened in January, compared to previous winters, making it the least polluted January since real-time air quality monitoring started in the city. VDO.AI But this meteorological advantage did not give much reprieve to the city as a rapid build-up in between rainy spells and the formation of smog episodes during rainless periods kept the overall seasonal average very high, the green think tank said. “Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. “This can be tamed only if round-the-year action becomes more stringent and uniform across sectors and the region. Action has to be performance-based to meet the clean air standards,” said Anumita Roychowdhury, executive director, Research and Advocacy, CSE. Avikal Somvanshi, programme manager, Urban Lab Analytics, CSE, said, “Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances.” “This is the challenge of this landlocked region. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke,” Somvanshi said. PTI GVS DIV DIV

Regional Sources Bigger Contributor Than Stubble Smoke To Delhi-NCR Winter Pollution: CSE

Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday. While there had been a minor drop in the seasonal level compared to previous winters, the level is still extremely high, and far from meeting the safety standards, the CSE researchers said, warning that if not acted upon immediately, this trend can worsen in the coming years negating the downward dip of the pandemic years. The CSE carried out the analysis of real-time data from monitoring stations in Delhi-NCR for the entire winter period – starting from October 1, 2021 till February 28, 2022. “Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. This can be tamed only if round the year action becomes more stringent and uniform across sectors and the region,” said Anumita Roychowdhury, Executive Director, Research and Advocacy, CSE. Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: “Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke.” According to SAFAR, smoke from the stubble fire in northern states started contributing to Delhi’s PM2.5 level from October 10, 2021 and ended on November 30, 2021. During these 52 days, the percentage contribution varied between one per cent and 48 per cent, with the latter being reported on November 7, 2021. This winter’s stubble fire season was four days shorter than the ones in the previous two winters. The number of days when percentage contribution was over 40 per cent was the same this winter as last year: just two days. But if looked at from absolute concentration terms, this year had twice the number of days when the PM2.5 load from stubble fire was high enough to plunge Delhi’s air quality into ‘very poor’ category on its own. Further, these high contribution load days happened in a cluster, which indicates that the biggest bulk burning instances took place in a span of fewer days this year than in the previous years. This might be due to the extended monsoon which reduced the rain-free period before the sowing of the wheat crop. The city-wide winter average for Delhi stood at 172 micro-gram per cubic metre, which is identical to the seasonal average of the winter of 2019-20 but is nine per cent lower than the seasonal average of 2020-21 winter. The seasonal peak was about five per cent lower than both preceding winters. Number of days with severe or worse air quality bounced back to pre-Covid levels: This winter, 25 days had the city-wide average in ‘severe’ or ‘worse’ AQI category — up from 23 such days in the previous winter and on par with 25 days in the winter of 2019-20. The CSE used data as recorded by 81 air quality monitoring stations under the Continuous Ambient Air Quality Monitoring System (CAAQMS) of the Central Pollution Control Board (CPCB) while the farm stubble fire data was sourced from System of Air Quality and Weather Forecasting and Research (SAFAR). Weather data was sourced from the Safdarjang weather station of Indian Meteorological Department (IMD).

Regional Sources Bigger Contributor Than Stubble Smoke To Delhi-NCR Winter Pollution: CSE

Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and Regional sources were higher than that from Stubble Smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday. Regional Sources Bigger Contributor Than Stubble Smoke To Delhi-ncr Winter Pollution: Cse-TeluguStop.com While there had been a minor drop in the seasonal level compared to previous winters, the level is still extremely high, and far from meeting the safety standards, the CSE researchers said, warning that if not acted upon immediately, this trend can worsen in the coming years negating the downward dip of the pandemic years. The CSE carried out the analysis of real-time data from monitoring stations in Delhi-NCR for the entire winter period – starting from October 1, 2021 till February 28, 2022. “Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors.This can be tamed only if round the year action becomes more stringent and uniform across sectors and the region,” said Anumita Roychowdhury, Executive Director, Research and Advocacy, CSE. Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: “Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances.Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and Regional sources are higher than that from Stubble smoke.” According to SAFAR, Smoke from the Stubble fire in northern states started contributing to Delhi’s PM2.5 level from October 10, 2021 and ended on November 30, 2021.During these 52 days, the percentage contribution varied between one per cent and 48 per cent, with the latter being reported on November 7, 2021. This winter’s Stubble fire season was four days shorter than the ones in the previous two winters.The number of days when percentage contribution was over 40 per cent was the same this winter as last year: just two days. But if looked at from absolute concentration terms, this year had twice the number of days when the PM2.5 load from Stubble fire was high enough to plunge Delhi’s air quality into ‘very poor’ category on its own.Further, these high contribution load days happened in a cluster, which indicates that the biggest bulk burning instances took place in a span of fewer days this year than in the previous years.This might be due to the extended monsoon which reduced the rain-free period before the sowing of the wheat crop. The city-wide winter average for Delhi stood at 172 micro-gram per cubic metre, which is identical to the seasonal average of the winter of 2019-20 but is nine per cent lower than the seasonal average of 2020-21 winter.The seasonal peak was about five per cent lower than both preceding winters. Number of days with severe or worse air quality bounced back to pre-Covid levels: This winter, 25 days had the city-wide average in ‘severe’ or ‘worse’ AQI category — up from 23 such days in the previous winter and on par with 25 days in the winter of 2019-20. The CSE used data as recorded by 81 air quality monitoring stations under the Continuous Ambient Air Quality Monitoring System (CAAQMS) of the Central Pollution Control Board (CPCB) while the farm Stubble fire data was sourced from System of Air Quality and Weather Forecasting and Research (SAFAR). Weather data was sourced from the Safdarjang weather station of Indian Meteorological Department (IMD).

Regional sources bigger contributor than stubble smoke to Delhi-NCR winter pollution: CSE

Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday. Despite being this winter being the wettest, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources were higher than that from stubble smoke, an analysis of winter pollution for Delhi-NCR by the Centre for Science and Environment (CSE) showed on Wednesday. While there had been a minor drop in the seasonal level compared to previous winters, the level is still extremely high, and far from meeting the safety standards, the CSE researchers said, warning that if not acted upon immediately, this trend can worsen in the coming years negating the downward dip of the pandemic years. The CSE carried out the analysis of real-time data from monitoring stations in Delhi-NCR for the entire winter period - starting from October 1, 2021 till February 28, 2022. "Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. This can be tamed only if round the year action becomes more stringent and uniform across sectors and the region," said Anumita Roychowdhury, Executive Director, Research and Advocacy, CSE. Avikal Somvanshi, Programme manager, Urban Lab Analytics, CSE, said: "Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke." According to SAFAR, smoke from the stubble fire in northern states started contributing to Delhi's PM2.5 level from October 10, 2021 and ended on November 30, 2021. During these 52 days, the percentage contribution varied between one per cent and 48 per cent, with the latter being reported on November 7, 2021. This winter's stubble fire season was four days shorter than the ones in the previous two winters. The number of days when percentage contribution was over 40 per cent was the same this winter as last year: just two days. But if looked at from absolute concentration terms, this year had twice the number of days when the PM2.5 load from stubble fire was high enough to plunge Delhi's air quality into 'very poor' category on its own. Further, these high contribution load days happened in a cluster, which indicates that the biggest bulk burning instances took place in a span of fewer days this year than in the previous years. This might be due to the extended monsoon which reduced the rain-free period before the sowing of the wheat crop. The city-wide winter average for Delhi stood at 172 micro-gram per cubic metre, which is identical to the seasonal average of the winter of 2019-20 but is nine per cent lower than the seasonal average of 2020-21 winter. The seasonal peak was about five per cent lower than both preceding winters. Number of days with severe or worse air quality bounced back to pre-Covid levels: This winter, 25 days had the city-wide average in 'severe' or 'worse' AQI category -- up from 23 such days in the previous winter and on par with 25 days in the winter of 2019-20. The CSE used data as recorded by 81 air quality monitoring stations under the Continuous Ambient Air Quality Monitoring System (CAAQMS) of the Central Pollution Control Board (CPCB) while the farm stubble fire data was sourced from System of Air Quality and Weather Forecasting and Research (SAFAR). Weather data was sourced from the Safdarjang weather station of Indian Meteorological Department (IMD).

Marginal improvement in Delhi-NCR's air quality this winter season despite record rain

Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke, Somvanshi said. Delhi recorded 25 ''severe'' air quality days this winter season – equalling the number of such days in 2019-20 – despite heavy and prolonged rains, according to an analysis by the Centre for Science and Environment. The city also saw two days of 'good' air and seven days of 'satisfactory' air this winter, which is an improvement from the last winter season when no such low-pollution days were recorded. This high variability in air quality this winter can be attributed to the increased number of heavy rainfall days and colder-than-usual weather. The winter average of PM2.5 for Delhi stood at 172 micrograms per cubic metre (μg/m3), which is equal to the average of the 2019-20 winter season but is 9 per cent lower than the seasonal average of the 2020-21 winter. Meteorologically, this winter was the wettest in recent years with almost two-three times more rainfall, bulk of which happened in January, compared to previous winters, making it the least polluted January since real-time air quality monitoring started in the city. But this meteorological advantage did not give much reprieve to the city as a rapid build-up in between rainy spells and the formation of smog episodes during rainless periods kept the overall seasonal average very high, the green think tank said. ''Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. ''This can be tamed only if round-the-year action becomes more stringent and uniform across sectors and the region. Action has to be performance-based to meet the clean air standards,'' said Anumita Roychowdhury, executive director, Research and Advocacy, CSE. Avikal Somvanshi, programme manager, Urban Lab Analytics, CSE, said, ''Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances.'' ''This is the challenge of this landlocked region. Despite being the wettest winter, the overall winter average of PM2.5 has stayed elevated and the overall contribution of the local and regional sources are higher than that from stubble smoke,'' Somvanshi said.

Winter air poor regardless of rain | Newest Information Delhi

Regardless of its wettest wintertime in fairly just a few a long time, the Capital solely noticed a marginal discount in air air pollution this time throughout as compared to last yr, in accordance with the Centre for Science and Ecosystem (CSE). Regardless of recording its wettest winter season within the final plenty of a very long time, Delhi solely noticed a marginal discount in air air pollution this time all-around as versus last yr, found an examination launched by the Centre for Science and Pure atmosphere (CSE) on Wednesday. Analysing a 5-thirty day interval time period from Oct 1, 2021, to February 28, 2022, the town-broad peculiar PM 2.5 quantity was discovered to be 172 microgramme for each cubic metre (μg/m3) — in extra of 4 durations the nationwide once-a-year normal of 40μg/m3 and the every single day frequent of 60μg/m3. That is 9% decrease than the seasonal peculiar by way of the corresponding time period in 2020-21 (189μg/m3), and equivalent to the air pollution degree in 2019-20 (173μg/m3). The 2018-19 winter noticed an regular PM2.5 diploma of 190μg/m3. The analysis additionally uncovered the seasonal peak PM 2.5 degree (516μg/m3) to be 5% decreased than in 2020-21 (542μg/m3) and 2019-20 (549μg/m3). “Meteorologically, this wintertime was the wettest in trendy yrs with nearly two-3 fold much more rainfall compared to former winters, bulk of which occurred in January, constructing it the least polluted January since genuine-time air good high quality monitoring began off within the city. However, this meteorological profit didn’t give a lot reprieve to the city as a speedy develop-up in in between wet spells and improvement of smog episodes at some stage in the rainless durations held whole seasonal typical fairly important,” talked about the analysis. Delhi recorded 217mm of rainfall in the middle of this wintertime interval — roughly double of the 114mm recorded within the previous winter. The Cash was 74mm at some stage in the 2019-20 wintertime and 86mm in 2018-19 winter.

Marginal improvement in Delhi-NCR's air quality this season despite record rain

Delhi recorded 25 "severe" air quality days this winter season – equalling the number of such days in 2019-20 – despite heavy and prolonged rains, according to an analysis by the Centre for Science and Environment. The city also saw two days of 'good' air and seven days of 'satisfactory' air this winter, which is an improvement from the last winter season when no such low-pollution days were recorded. This high variability in air quality this winter can be attributed to the increased number of heavy rainfall days and colder-than-usual weather.The winter average of PM2.5 for Delhi stood at 172 micrograms per cubic metre (µg/m3), which is equal to the average of the 2019-20 winter season but is 9 per cent lower than the seasonal average of the 2020-21 winter. Meteorologically, this winter was the wettest in recent years with almost two-three times more rainfall, bulk of which happened in January, compared to previous winters, making it the least polluted January since real-time air quality monitoring started in the city. But this meteorological advantage did not give much reprieve to the city as a rapid build-up in between rainy spells and the formation of smog episodes during rainless periods kept the overall seasonal average very high, the green think tank said. "Elevated pollution levels and smog episodes are evidence of the systemic pollution that has continued in the region due to inadequate infrastructure and systems for pollution control in all sectors. "This can be tamed only if round-the-year action becomes more stringent and uniform across sectors and the region. Action has to be performance-based to meet the clean air standards," said Anumita Roychowdhury, executive director, Research and Advocacy, CSE. Avikal Somvanshi, programme manager, Urban Lab Analytics, CSE, said, "Even though there is considerable variation in seasonal averages across the region, winter pollution episodes are alarmingly high and synchronised in the region despite large distances."