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विज्ञान और पर्यावरण केंद्र

ग्रीन थिंक-टैंक सेंटर फॉर साइंस एंड एनवायरनमेंट (सीएसई) ने आज कहा कि पहले भीषण स्मॉग प्रकरण ने दिल्ली और राष्ट्रीय राजधानी क्षेत्र (एनसीआर) को प्रभावित किया है और अगले दो दिनों तक चलने की उम्मीद है। हालांकि दिल्ली में मौसमी धुंध तीव्र है, अक्टूबर के मध्य से 8 नवंबर तक खेत की आग से निकलने वाले धुएं का औसत दैनिक योगदान पिछले चार वर्षों में सबसे कम रहा है। सीएसई के कार्यकारी निदेशक (अनुसंधान और वकालत) अनुमिता रॉयचौधरी ने कहा, “अनुमानतः, मौसम की पहली कड़ी प्रतिकूल मौसम की स्थिति (ठंडी और शांत हवाओं और उलटा), पराली जलाने और पटाखों के संयुक्त प्रभाव से शुरू हुई है।” पिछले चार वर्षों के पहले स्मॉग एपिसोड की तुलना में, वर्तमान स्मॉग 2018 और 2020 सीज़न के पहले स्मॉग की अवधि से मेल खाता है – दोनों छह दिनों तक चले। सीएसई ने कहा कि अगर स्थिति में सुधार नहीं होता है, तो यह 2019 के आठ दिनों तक चले धुंध से आगे निकल सकता है। इस साल अब तक स्मॉग की औसत तीव्रता 329 माइक्रोग्राम प्रति क्यूबिक मीटर प्रति दिन है, जो कि 2020 स्मॉग (7 फीसदी) और 2019 स्मॉग (3 फीसदी) की तुलना में कम है। यह 2018 के स्मॉग (करीब 9 फीसदी) की तुलना में अधिक तीव्र है। ग्रीन थिंक टैंक ने कहा कि अपेक्षाकृत तेज़ स्थानीय परिस्थितियों के बावजूद इस साल के धुंध के लंबे समय तक रहने का कारण शहर में प्रदूषण नियंत्रण उपायों की कमी हो सकती है। “जबकि PM2.5 की बहुत अधिक सांद्रता ने ध्यान आकर्षित किया है, इस स्मॉग एपिसोड के दौरान गैसों – ओजोन, CO या NO2 – का स्तर ऊंचा बना हुआ है। साथ ही, दिवाली की रात को SO2 से NO2 के अनुपात में वृद्धि हुई है, जो प्रदूषण भार में वृद्धि का संकेत देता है। पटाखों। दिवाली की रात (रात 8 बजे से सुबह 8 बजे तक) पीएम2.5 की सघनता 2017 के बाद से सबसे अधिक तीव्र रही है,” शहरी लैब, सीएसई के कार्यक्रम प्रबंधक अविकल सोमवंशी ने कहा। यह विश्लेषण दिल्ली-एनसीआर में वर्तमान कार्यरत वायु गुणवत्ता निगरानी स्टेशनों और बड़े भारत-गंगा के मैदान से उपलब्ध वास्तविक समय के आंकड़ों पर आधारित है। “औसतन, अक्टूबर से 8 नवंबर के मध्य के दौरान दिल्ली के दैनिक PM2.5 में धुएं का योगदान पिछले चार वर्षों में सबसे कम रहा है। अब तक, यह प्रति दिन औसतन 12 प्रतिशत दर्ज किया गया है, जबकि 17 प्रतिशत प्रति दिन औसत है। 2020 में प्रति दिन प्रतिशत, 2019 में प्रति दिन 14 प्रतिशत और 2018 में प्रति दिन 16 प्रतिशत (जैसा कि SAFAR द्वारा रिपोर्ट किया गया है), “सीएसई ने कहा। “यदि पूर्ण सांद्रता में परिवर्तित किया जाता है, तो इस वर्ष अब तक धुएं का प्रति दिन योगदान 26 माइक्रोग्राम प्रति क्यूबिक मीटर था, जबकि 2020 में 35 माइक्रोग्राम प्रति क्यूबिक मीटर, 2019 में 40 माइक्रोग्राम प्रति क्यूबिक मीटर और 2018 में 31 माइक्रोग्राम प्रति क्यूबिक मीटर था। ,” यह कहा। हालांकि, दिल्ली के पीएम स्तर पर धुएं का चरम योगदान 7 नवंबर को दर्ज किया गया था, जब यह 48 प्रतिशत तक पहुंच गया था। इस तरह के अनुमान के बाद से 2018 में SAFAR द्वारा शुरू किए जाने के बाद से दर्ज किया गया यह दूसरा सबसे बड़ा दैनिक योगदान प्रतिशत है।

पहला गंभीर स्मॉग एपिसोड दिल्ली में हिट, 4 साल में सबसे लंबा हो सकता है: रिपोर्ट

दिल्ली में अब तक स्मॉग की औसत तीव्रता 329 माइक्रोग्राम प्रति क्यूबिक मीटर प्रतिदिन है। नई दिल्ली: ग्रीन थिंक-टैंक सेंटर फॉर साइंस एंड एनवायरनमेंट (सीएसई) ने आज कहा कि पहले भीषण स्मॉग प्रकरण ने दिल्ली और राष्ट्रीय राजधानी क्षेत्र (एनसीआर) को प्रभावित किया है और अगले दो दिनों तक चलने की उम्मीद है। दिल्ली में मौसमी धुंध भले ही तीव्र हो, लेकिन अक्टूबर के मध्य से आठ नवंबर तक खेत की आग से निकलने वाले धुएं का औसत दैनिक योगदान पिछले चार वर्षों में सबसे कम रहा है। सीएसई के कार्यकारी निदेशक (अनुसंधान और वकालत) अनुमिता रॉयचौधरी ने कहा, “अनुमानतः, मौसम की पहली कड़ी प्रतिकूल मौसम की स्थिति (ठंडी और शांत हवाओं और उलटा), पराली जलाने और पटाखों के संयुक्त प्रभाव से शुरू हुई है।” पिछले चार वर्षों के पहले स्मॉग एपिसोड की तुलना में, वर्तमान स्मॉग 2018 और 2020 सीज़न के पहले स्मॉग की अवधि से मेल खाता है – दोनों छह दिनों तक चले। सीएसई ने कहा कि अगर स्थिति में सुधार नहीं होता है, तो यह 2019 के आठ दिनों तक चले धुंध से आगे निकल सकता है। इस साल अब तक स्मॉग की औसत तीव्रता 329 माइक्रोग्राम प्रति क्यूबिक मीटर प्रति दिन है, जो कि 2020 स्मॉग (7 फीसदी) और 2019 स्मॉग (3 फीसदी) की तुलना में कम है। यह 2018 के स्मॉग (करीब 9 फीसदी) की तुलना में अधिक तीव्र है। ग्रीन थिंक टैंक ने कहा कि अपेक्षाकृत हवा वाली स्थानीय परिस्थितियों के बावजूद इस साल के धुंध के लंबे समय तक रहने का कारण शहर में प्रदूषण नियंत्रण उपायों की कमी हो सकती है। “जबकि PM2.5 की बहुत अधिक सांद्रता ने ध्यान आकर्षित किया है, इस स्मॉग एपिसोड के दौरान गैसों – ओजोन, CO या NO2 – का स्तर ऊंचा बना हुआ है। साथ ही, दिवाली की रात को SO2 से NO2 के अनुपात में वृद्धि हुई है, जो प्रदूषण भार में वृद्धि का संकेत देता है। पटाखों। दिवाली की रात (रात 8 बजे से सुबह 8 बजे तक) पीएम2.5 की सघनता 2017 के बाद से सबसे तीव्र रही है, “अर्बन लैब, सीएसई के प्रोग्राम मैनेजर अविकल सोमवंशी ने कहा। यह विश्लेषण दिल्ली-एनसीआर में वर्तमान कार्यरत वायु गुणवत्ता निगरानी स्टेशनों और बड़े भारत-गंगा के मैदान से उपलब्ध वास्तविक समय के आंकड़ों पर आधारित है। “औसतन, अक्टूबर से 8 नवंबर के मध्य के दौरान दिल्ली के दैनिक PM2.5 में धुएं का योगदान पिछले चार वर्षों में सबसे कम रहा है। अब तक, यह प्रति दिन औसतन 12 प्रतिशत दर्ज किया गया है, जबकि 17 प्रतिशत प्रति दिन औसत है। 2020 में प्रति दिन, 2019 में प्रति दिन 14 प्रतिशत, और 2018 में प्रति दिन 16 प्रतिशत (जैसा कि SAFAR द्वारा रिपोर्ट किया गया है), “सीएसई ने कहा। “यदि पूर्ण सांद्रता में परिवर्तित किया जाता है, तो इस वर्ष अब तक धुएं का प्रति दिन योगदान 26 माइक्रोग्राम प्रति क्यूबिक मीटर था, जबकि 2020 में 35 माइक्रोग्राम प्रति क्यूबिक मीटर, 2019 में 40 माइक्रोग्राम प्रति क्यूबिक मीटर और 2018 में 31 माइक्रोग्राम प्रति क्यूबिक मीटर था। ,” यह कहा। हालांकि, दिल्ली के पीएम स्तर पर धुएं का चरम योगदान 7 नवंबर को दर्ज किया गया था, जब यह 48 प्रतिशत तक पहुंच गया था। इस तरह के अनुमान के बाद से यह दूसरा सबसे बड़ा दैनिक योगदान प्रतिशत दर्ज किया गया, जिसे SAFAR द्वारा 2018 में शुरू किया गया था। 5 नवंबर, 2018 को उच्चतम एकल दिवस योगदान प्रतिशत 58 प्रतिशत दर्ज किया गया है।

Delhi NCR in grip of first smog episode, could be longest in 4 years https://www.news9live.com/india/delhi-in-grip-of-first-smog-episode-could-be-longest-in-4-years-132738

New Delhi: The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, the green think-tank Centre for Science and Environment (CSE) said on Wednesday. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in the last four years, it said. Also Read - Delhi does little to help homeless in long run: Unvaccinated, jobless migrant workers struggle to feed families "Predictably, the season's first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers," said Anumita Roychowdhury, executive director, research and advocacy, CSE. Compared to the first smog episode of the previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 – both lasting six days. If conditions don't improve, it might overtake the 2019 smog that lasted eight days, the CSE said. Also Read - BJP to roll out tractor rallies across UP on Nov 16 to woo farmers The average intensity of the smog this year so far is 329 micrograms per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year's smog for a longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. Also Read - The crypto-craze in India and where it is heading "While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 -- have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017," said Avikal Somvanshi, programme manager, Urban Lab, CSE. Also Read - 'Madness or treason?', says Varun Gandhi to Kangana Ranaut's India got 'real freedom' in 2014 This analysis is based on the real-time data available from the current working air quality monitoring stations in Delhi-NCR and the larger Indo-Gangetic Plain. "On an average, the contribution of smoke to Delhi's daily PM2.5 during the middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR)," the CSE said. "If converted to absolute concentrations, the per day contribution of smoke stood at 26 micrograms per cubic metre this year so far compared to 35 micrograms per cubic metre in 2020, 40 micrograms per cubic metre in 2019, and 31 micrograms per cubic metre in 2018," it said. However, the peak contribution of smoke to Delhi's PM level was recorded on 7th November when it hit 48 per cent. This is the second-highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single-day contribution percentage has been 58 per cent recorded on November 5, 2018. "The ongoing smog episode is a public health emergency. This requires urgent emergency action on key combustion sources (vehicles, industry, waste burning) and dust sources (construction and roads) to prevent further trapping of pollution when there is no wind to blow this away. We need pollution-source-wise and hotspot-wise status of action," Roychowdhury said.

Delhi NCR in grip of first smog episode, could be longest in 4 years https://www.news9live.com/india/delhi-in-grip-of-first-smog-episode-could-be-longest-in-4-years-132738

New Delhi: The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, the green think-tank Centre for Science and Environment (CSE) said on Wednesday. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in the last four years, it said. Also Read - Delhi does little to help homeless in long run: Unvaccinated, jobless migrant workers struggle to feed families "Predictably, the season's first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers," said Anumita Roychowdhury, executive director, research and advocacy, CSE. Compared to the first smog episode of the previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 – both lasting six days. If conditions don't improve, it might overtake the 2019 smog that lasted eight days, the CSE said. Also Read - BJP to roll out tractor rallies across UP on Nov 16 to woo farmers The average intensity of the smog this year so far is 329 micrograms per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year's smog for a longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. Also Read - The crypto-craze in India and where it is heading "While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 -- have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017," said Avikal Somvanshi, programme manager, Urban Lab, CSE. Also Read - 'Madness or treason?', says Varun Gandhi to Kangana Ranaut's India got 'real freedom' in 2014 This analysis is based on the real-time data available from the current working air quality monitoring stations in Delhi-NCR and the larger Indo-Gangetic Plain. "On an average, the contribution of smoke to Delhi's daily PM2.5 during the middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR)," the CSE said. "If converted to absolute concentrations, the per day contribution of smoke stood at 26 micrograms per cubic metre this year so far compared to 35 micrograms per cubic metre in 2020, 40 micrograms per cubic metre in 2019, and 31 micrograms per cubic metre in 2018," it said. However, the peak contribution of smoke to Delhi's PM level was recorded on 7th November when it hit 48 per cent. This is the second-highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single-day contribution percentage has been 58 per cent recorded on November 5, 2018. "The ongoing smog episode is a public health emergency. This requires urgent emergency action on key combustion sources (vehicles, industry, waste burning) and dust sources (construction and roads) to prevent further trapping of pollution when there is no wind to blow this away. We need pollution-source-wise and hotspot-wise status of action," Roychowdhury said. https://www.news9live.com/india/delhi-in-grip-of-first-smog-episode-could-be-longest-in-4-years-132738

Delhi has experienced its first severe smog episode in four years, which may be the longest in the city’s history: Report

According to the Centre for Science and Environment, the average daily contribution of smoke from farm fires was the lowest in the last four years from the middle of October to November 8. New Delhi, India’s capital The first severe smog episode has hit Delhi and the National Capital Region (NCR), according to the green think-tank Centre for Science and Environment, and it is expected to last for another two days (CSE). Despite Delhi’s severe seasonal smog, the average daily contribution of smoke from farm fires was the lowest in the city’s history from the middle of October to November 8. “The season’s first episode was predictably triggered by a combination of unfavourable weather conditions (cool and calm winds and inversion), stubble burning, and firecrackers,” CSE executive director of research and advocacy Anumita Roychowdhury said. In comparison to the previous four years’ first smog episodes, the current smog has matched the duration of the first smog episodes in the 2018 and 2020 seasons, both of which lasted six days. If conditions do not improve, the eight-day smog that occurred in 2019 may be exceeded. So far this year, the average smog intensity is 329 micrograms per cubic metre per day, which is 7% lower than the smog levels in 2020 (b) and 2019. The persistence of this year’s smog, despite relatively windier local conditions, could be attributed to a lack of pollution control measures in the city, according to the green think tank. “While extremely high levels of PM2.5 have captured the public’s attention, other gases such as ozone, CO, and NO2 have remained elevated throughout this smog episode. Furthermore, the SO2 to NO2 ratio increased on Diwali night, indicating an increase in pollution load from firecrackers. On Diwali night (8 p.m. to 8 a.m.), the PM2.5 concentration was the highest since 2017.” Avikal Somvanshi, CSE’s Urban Lab programme manager, agreed. This is the second highest daily contribution percentage recorded since SAFAR began tracking it in 2018.

https://www.lokmatnews.in/india/first-dense-fog-of-the-season-in-delhi-expected-to-remain-longest-in-four-years-cse-b421/

दिल्ली और राष्ट्रीय राजधानी क्षेत्र में मौसम की पहली घनी धुंध छा गयी है और इसके दो और दिनों तक रहने की आशंका है। विज्ञान एवं पर्यावरण केंद्र (सीएसई) ने बुधवार को यह जानकारी दी।</p><p> हालांकि, दिल्ली में मौसमी धुंध घनी है लेकिन अक्टूबर के मध्य से आठ नवंबर तक पराली जलाने से होने वाले धुएं का औसत दैनिक योगदान पिछले चार वर्षों में सबसे कम रहा है।

Centre For Science And Environment

Even despite the fact that the seasonal smog in Delhi is intense, the typical day-to-day contribution of smoke from farm fires from the center of October to November 8 has been the bottom in final 4 years, it mentioned. “Predictably, the season’s first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers,” mentioned Anumita Roychowdhury, govt director, analysis and advocacy, CSE. Compared to the primary smog episode of earlier 4 years, the present smog has matched the length of the primary smog of 2018 and 2020 season — each lasted six days. If stipulations do not give a boost to, it would overtake the 2019 smog that lasted 8 days, the CSE mentioned. The moderate depth of the smog this yr thus far is 329 microgram in step with cubic metre in step with day, which is less than that of the 2020 smog (by way of 7 in step with cent) and 2019 smog (by way of 3 in step with cent). It is extra intense than the 2018 smog (about 9 in step with cent). Lingering on of this yr’s smog for longer length regardless of moderately windier native stipulations may well be because of the loss of air pollution keep watch over measures within the town, the fairway suppose tank mentioned. “While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 — have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017,” mentioned Avikal Somvanshi, programme supervisor, Urban Lab, CSE. This research is according to the actual time knowledge to be had from the present running air high quality tracking stations in Delhi-NCR and the bigger Indo-Gangetic Plain. “On an average, contribution of smoke to Delhi’s daily PM2.5 during middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR),” the CSE mentioned. “If converted to absolute concentrations, the per day contribution of smoke stood at 26 microgram per cubic metre this year so far compared to 35 microgram per cubic metre in 2020, 40 microgram per cubic metre in 2019, and 31 microgram per cubic metre in 2018,” it mentioned. However, the height contribution of smoke to Delhi’s PM stage was once recorded on seventh November when it hit 48 in step with cent. This the second one easiest day-to-day contribution share recorded since such estimation was once began by way of SAFAR in 2018. The easiest unmarried day contribution share has been 58 in step with cent recorded on November 5, 2018.

Delhi Smog News: सीएसई का अनुमान- दिल्ली में मौसम की पहली घनी घुंध, चार वर्षों में सबसे लंबे समय तक बने रह सकता है

Smog News In Delhi: दिल्ली में घनी स्मॉग को लेकर विज्ञान एवं पर्यावरण केंद्र आशंका जताई गई है कि इस साल की धुंध काफी लंबे समय तक बनी रह सकती है. Smog In Delhi: दिल्ली और राष्ट्रीय राजधानी क्षेत्र में मौसम की पहली घनी धुंध (स्मॉग) छा गयी है. यह स्मॉग अगलो दो दिनों तक दिल्ली और आसपास के इलाके में घेरे रह सकती है. दिल्ली में स्मॉग को लेकर विज्ञान एवं पर्यावरण केंद्र (सीएसई) ने इस बात की जानकारी दी है. रिपोर्ट की माने तो दिल्ली में मौसमी स्मॉग घनी है लेकिन अक्टूबर के मध्य से आठ नवंबर तक पराली जलाने से होने वाले धुएं का औसत दैनिक योगदान पिछले चार साल में सबसे कम रहा है. स्मॉग में धुएं का योगदान पिछले चार वर्षों में सबसे कम VDO.AI सीएसई ने कहा, ''दिल्ली के औसतन दैनिक पीएम 2.5 में अक्टूबर से आठ नवंबर के दौरान धुएं का योगदान पिछले चार वर्षों में सबसे कम रहा है. अभी तक यह प्रतिदिन औसतन 12 प्रतिशत दर्ज किया गया जबकि पिछले साल 17 फीसदी, 2019 में 14 फीसदी और 2018 में 16 प्रतिशत था.'' जानें कैसे छाई धुंध? सीएसई में रिसर्च की कार्यकारी निदेशक अनुमिता रॉय चौधरी ने कहा, ''जाहिर तौर पर मौसम की प्रतिकूल परिस्थितियों (ठंडी और शांत हवाओं) के संयुक्त असर, पराली और पटाखे जलाने से मौसम की धुंध छा गयी है.'' 2019 में आठ दिनों तक रही थी धुंध सीएसई ने बताया कि पिछले चार वर्षों की धुंध की पहली घटना की तुलना करने पर मौजूदा धुंध 2018 और 2020 की पहली धुंध की अवधि से मिलती है जो छह दिनों तक रही थी. अगर परिस्थितियों में सुधार नहीं होता है तो यह 2019 की धुंध से भी अधिक समय तक रह सकती है जो आठ दिनों तक रही थी.

CSE forecast – Delhi’s first dense haze of weather, may remain for the longest time in four years

Smog In Delhi: The first dense smog of the season has covered Delhi and the National Capital Region. This smog is likely to engulf Delhi and surrounding areas for the next two days. The Center for Science and Environment (CSE) has given this information regarding smog in Delhi. According to the report, the seasonal smog in Delhi is dense, but the average daily contribution of stubble burning from mid-October to November 8 has been the lowest in the last four years. Contribution of smoke to smog lowest in last four years CSE said, “The contribution of smoke to the average daily PM 2.5 of Delhi during October to November 8 has been the lowest in the last four years. So far it has been recorded on an average of 12 per cent per day as compared to 17 per cent last year, 14 per cent in 2019 and 16 per cent in 2018. Learn how the mist formed? “Obviously the combined effect of adverse weather conditions (cold and calm winds), stubble and crackers burning has turned the weather hazy,” said Anumita Roy Chowdhury, executive director of research at CSE. There was haze for eight days in 2019 CSE said that comparing the first occurrence of haze of the last four years, the present haze matches the first haze period of 2018 and 2020 which lasted for six days. If the conditions do not improve, it could last longer than the haze of 2019 which lasted for eight days.

First Severe Smog Episode Hits Delhi, Could Be Longest In 4 Years: Report

The average intensity of the smog in Delhi so far is 329 microgram per cubic metre per day. New Delhi: The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, green think-tank Centre for Science and Environment (CSE) said today. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in last four years, it said. “Predictably, the season’s first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers,” said Anumita Roychowdhury, executive director, research and advocacy, CSE. Compared to the first smog episode of previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 season — both lasted six days. If conditions don’t improve, it might overtake the 2019 smog that lasted eight days, the CSE said. The average intensity of the smog this year so far is 329 microgram per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year’s smog for longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. “While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 — have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017,” said Avikal Somvanshi, programme manager, Urban Lab, CSE. This analysis is based on the real time data available from the current working air quality monitoring stations in Delhi-NCR and the larger Indo-Gangetic Plain. “On an average, contribution of smoke to Delhi’s daily PM2.5 during middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR),” the CSE said. “If converted to absolute concentrations, the per day contribution of smoke stood at 26 microgram per cubic metre this year so far compared to 35 microgram per cubic metre in 2020, 40 microgram per cubic metre in 2019, and 31 microgram per cubic metre in 2018,” it said. However, the peak contribution of smoke to Delhi’s PM level was recorded on 7th November when it hit 48 per cent. This the second highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single day contribution percentage has been 58 per cent recorded on November 5, 2018.

Delhi in grip of season's longest smog episode in 4 yrs, says report

The average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in the last four years The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, green think-tank Centre for Science and Environment (CSE) said on Wednesday. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in last four years, it said. Predictably, the season's first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers," said Anumita Roychowdhury, executive director, research and advocacy, CSE. Compared to the first smog episode of previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 season -- both lasted six days. If conditions don't improve, it might overtake the 2019 smog that lasted eight days, the CSE said The average intensity of the smog this year so far is 329 microgram per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year's smog for longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. “While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 -- have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017," said Avikal Somvanshi, programme manager, Urban Lab, CSE. If converted to absolute concentrations, the per day contribution of smoke stood at 26 microgram per cubic metre this year so far compared to 35 microgram per cubic metre in 2020, 40 microgram per cubic metre in 2019, and 31 microgram per cubic metre in 2018," it said However, the peak contribution of smoke to Delhi's PM level was recorded on 7th November when it hit 48 per cent. This the second highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single day contribution percentage has been 58 per cent recorded on November 5, 2018. “The ongoing smog episode is a public health emergency. This requires urgent emergency action on key combustion sources (vehicles, industry, waste burning) and dust sources (construction and roads) to prevent further trapping of pollution when there is no wind to blow this away. We need pollution-source-wise and hotspot-wise status of action," Roychowdhury said.

Delhi's AQI improves but remains in 'very poor' category; Kolkata, Mumbai report 'moderate' air

Strong winds lowered pollution levels marginally and the 24-hourly average air quality index stood at 372 on Wednesday. News Stubble burning accounted for 27 per cent of the air pollution in the capital. According to SAFAR, Mumbai's overall AQI was 162 on Thursday morning. Kolkata's air quality also remained in the "moderate" category on Thursday morning. Delhi's air quality remained in the "very poor" zone on Thursday morning with an overall Air Quality Index (AQI) at 360, as per the System of Air Quality and Weather Forecasting And Research (SAFAR) data. On Wednesday, the air quality of the national capital was in the 'very poor' category with AQI standing at 382, showing marginal improvement. It was in the 'very poor' category on Tuesday as well. Delhi recorded a minimum temperature of 13.4 degrees Celsius, the lowest this season so far, on Wednesday and it is likely to dip to 11 degrees Celsius in a week, according to the India Meteorological Department. Also Read - Delhi does little to help homeless in long run: Unvaccinated, jobless migrant workers struggle to feed families Strong winds lowered pollution levels marginally and the 24-hourly average air quality index stood at 372 on Wednesday. The air quality in the city and its neighbouring areas is predicted to worsen in the next two days. Stubble burning accounted for 27 per cent of the air pollution in the capital. An AQI between zero and 50 is considered good, 51 and 100 satisfactory, 101 and 200 moderate, 201 and 300 poor, 301 and 400 very poor, and 401 and 500 severe. Also Read - Agri supply chain in Tamil Nadu thrown off gear by the recent bout of rains According to SAFAR, Mumbai's overall AQI was 162 on Thursday morning and Pune recorded an AQI of 128. Chennai's air quality remained in the "satisfactory" category on Thursday morning, with AQI at 73. Kolkata's air quality also remained in the "moderate" category on Thursday morning with an overall AQI at 184. Meanwhile, the green think-tank Centre for Science and Environment (CSE) said the first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days Also Read - Ashok Gehlot meets Sonia Gandhi in Delhi to discuss Rajasthan cabinet reshuffle Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in the last four years, it said. Compared to the first smog episode of the previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 – both lasting six days. If conditions don't improve, it might overtake the 2019 smog that lasted eight days, the CSE said. Also Read - Maha: 89 per cent eligible population in Raigad covered with first dose of COVID-19 vaccine The average intensity of the smog this year so far is 329 micrograms per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year's smog for a longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. "While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 -- have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017," said Avikal Somvanshi, programme manager, Urban Lab, CSE. This analysis is based on the real-time data available from the current working air quality monitoring stations in Delhi-NCR and the larger Indo-Gangetic Plain. "On an average, the contribution of smoke to Delhi's daily PM2.5 during the middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR)," the CSE said. "If converted to absolute concentrations, the per day contribution of smoke stood at 26 micrograms per cubic metre this year so far compared to 35 micrograms per cubic metre in 2020, 40 micrograms per cubic metre in 2019, and 31 micrograms per cubic metre in 2018," it said. However, the peak contribution of smoke to Delhi's PM level was recorded on 7th November when it hit 48 per cent. This is the second-highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single-day contribution percentage has been 58 per cent recorded on November 5, 2018. https://www.news9live.com/india/delhi-air-quality-improves-but-remains-in-very-poor-category-kolkata-mumbai-report-moderate-aqi-132755

Delhi in grip of season’s longest smog episode in 4 yrs, says report

The Center for Science and Environment (CSE) said on Wednesday that the first episode of severe fog hit Delhi and the National Capital Region (NCR) and is expected to continue for another two days. Although seasonal smog in Delhi is severe, the average daily contribution of smoke from farm fires from mid-October to 8 November was the lowest in the past four years. As expected, the first episode of the season was triggered by the combined effect of unfavorable weather conditions (cold, calm winds and inversion), burning hay and firecrackers. Compared to the first episode of smog in the past four years, the current smog matches the duration of the first smog of the 2018 and 2020 season – both of which lasted six days. And if conditions do not improve, the CSE said, it could exceed 2019’s eight-day smog The average smog density so far this year has been 329 micrograms per cubic meter per day, which is lower than the intensity of 2020 smog (up 7 percent) and 2019 smog (up 3 percent). It is more intense than the smog of 2018 (about 9 percent). The Green Research Center said that this year’s smog persistence for longer despite relatively severe local conditions may be due to a lack of pollution control measures in the city. “While very high concentrations of PM2.5 have attracted attention, levels of gases – ozone, carbon dioxide or nitrogen dioxide – remained high during the smog episode. Also, the ratio of SO2 to NO2 increased on the night of Diwali indicating an Increasing pollution load from fireworks.Avikal Somvanshi, program manager at Urban Lab, CSE, said the concentration of PM2.5 on Diwali night (from 8 p.m. to 8 a.m.) was the most intense since 2017. Converted to absolute concentrations, the daily contribution of smoke is 26 micrograms per cubic meter this year so far compared to 35 micrograms per cubic meter in 2020, 40 micrograms per cubic meter in 2019, and 31 micrograms per cubic meter in 2018, “he said However, the peak smoke contribution to the PM level was recorded in Delhi on November 7 when it reached 48 per cent. This is the second highest daily contribution percentage recorded since Saffar began this recognition in 2018. The highest one-day contribution rate was 58% on November 5, 2018. “The persistent phenomenon of smog is a public health emergency. This requires urgent emergency action on major combustion sources (vehicles, industry, waste incineration) and dust sources (construction and roads) to prevent further pollution trapping when there is no wind to blow them away. We Need to work out in terms of pollution source and hotspot.”

Pollution: First severe smog spell of season in Delhi, could be longest in 4 yrs

Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires has been the lowest in last four years: CSE The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, green think-tank Centre for Science and Environment (CSE) said on Wednesday. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in last four years, it said. "Predictably, the season's first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers," said Anumita Roychowdhury, executive director, research and advocacy, CSE. Also watch: Delhi pollution: air quality continues to remain in severe category Compared to the first smog episode of previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 season -- both lasted six days. If conditions don't improve, it might overtake the 2019 smog that lasted eight days, the CSE said. The average intensity of the smog this year so far is 329 microgram per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year's smog for longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said.

Delhi air pollution: AQI improves to enter very poor zone

Delhi’s air high quality improved marginally to succeed in the ‘very poor’ class on Wednesday because the capital recorded an total air high quality index (AQI) of 372 – a drop from Tuesday’s 404, knowledge from the Central Air pollution Management Board (CPCB) confirmed. Based on specialists, although native meteorological situations largely remained the identical, a slight drop within the velocity of wind that’s bringing stubble emissions to Delhi has led to this slight enchancment within the final 24 hours. Forecasts on Wednesday confirmed transport-level winds will as soon as once more decide up from Thursday onwards, with two days of ‘extreme’ air a chance as soon as once more. Based on the System of Air High quality and Climate Forecasting And Analysis (Safar), winds that transport stubble emissions from Punjab and Haryana to Delhi, are anticipated to select up once more over the subsequent two days. This more likely to deteriorate over the subsequent two days. Although the variety of farm fireplace incidents went as much as 5,317 on Wednesday from 3,476 on Tuesday, their share within the total air pollution mixture of Delhi stayed at 27%. Gufran Beig, founder and mission director at Safar, says a mixture of robust transport-level winds, together with calm wind velocity over Delhi is more likely to see ‘extreme’ air once more. “If the farm fires stay the identical, the share of stubble burning will begin growing once more from Thursday as winds from Punjab and Haryana will decide up velocity. In the meantime, Delhi will see calm wind situations, which can assist lure pollution over town,” he stated. In an evaluation finished by the Middle for Science and Setting (CSE) on Wednesday, the physique stated this smog episode is predicted to final one other two days, with it already matching the primary smog episodes of 2018 and 2020 – every of which lasted six days . “Whereas very excessive concentrations of PM2.5 have hogged consideration, the degrees of gases – ozone, CO or NO2 — have additionally remained elevated throughout this smog episode,” says Avikal Somvanshi, program supervisor, City Lab, CSE, including that if situations don’t enhance, this smog episode is more likely to overtake the 2019 smog episode, which lasted eight days. Delhi recorded a minimal temperature of 13.4 levels Celsius on Wednesday, the bottom to date this season. It was 13.5 levels on Tuesday. “A gradual drop in minimal temperature is predicted over the subsequent seven days, touching 11 levels Celsius by November 16,” a met official stated.

Centre For Science And Environment

The first severe smog episode has hit Delhi and the National Capital Region (NCR) and is expected to last for another two days, green think-tank Centre for Science and Environment (CSE) said today. Even though the seasonal smog in Delhi is intense, the average daily contribution of smoke from farm fires from the middle of October to November 8 has been the lowest in last four years, it said. “Predictably, the season’s first episode has been triggered by the combined effect of unfavourable weather conditions (cool and calm winds and inversion), stubble burning and firecrackers,” said Anumita Roychowdhury, executive director, research and advocacy, CSE. Compared to the first smog episode of previous four years, the current smog has matched the duration of the first smog of 2018 and 2020 season — both lasted six days. If conditions don’t improve, it might overtake the 2019 smog that lasted eight days, the CSE said. The average intensity of the smog this year so far is 329 microgram per cubic metre per day, which is lower than that of the 2020 smog (by 7 per cent) and 2019 smog (by 3 per cent). It is more intense than the 2018 smog (about 9 per cent). Lingering on of this year’s smog for longer duration despite relatively windier local conditions might be due to the lack of pollution control measures in the city, the green think tank said. “While very high concentrations of PM2.5 have hogged attention, the levels of gases – ozone, CO or NO2 — have remained elevated during this smog episode. Also, the ratio of SO2 to NO2 increased on Diwali night indicating increased pollution load from firecrackers. The PM2.5 concentration on Diwali night (8 pm to 8 am) has been the most intense since 2017,” said Avikal Somvanshi, programme manager, Urban Lab, CSE. This analysis is based on the real time data available from the current working air quality monitoring stations in Delhi-NCR and the larger Indo-Gangetic Plain. “On an average, contribution of smoke to Delhi’s daily PM2.5 during middle of October to November 8 has been the lowest in the last four years. So far, it has recorded on an average 12 per cent per day in contrast to 17 per cent per day in 2020, 14 per cent per day in 2019, and 16 per cent per day in 2018 (as reported by SAFAR),” the CSE said. “If converted to absolute concentrations, the per day contribution of smoke stood at 26 microgram per cubic metre this year so far compared to 35 microgram per cubic metre in 2020, 40 microgram per cubic metre in 2019, and 31 microgram per cubic metre in 2018,” it said. However, the peak contribution of smoke to Delhi’s PM level was recorded on 7th November when it hit 48 per cent. This the second highest daily contribution percentage recorded since such estimation was started by SAFAR in 2018. The highest single day contribution percentage has been 58 per cent recorded on November 5, 2018.