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Delhi: Vehicles biggest source of local pollution, says study

NEW DELHI: Vehicles have emerged as the biggest contributor to particulate pollution in Delhi. Their real-time share of vehicular emissions in air pollution has increased to over 50% in early winter (October 24-November 8) this year, says a new analysis released on Thursday by the Centre for Science and Environment. Track the pollution level in your city CSE has analysed the real-time data on the comparative contributions of different sources to the pollutants in the city’s air compiled by Indian Institute of Tropical Meteorology. CSE accessed data for every alternate hour for the October 24- November 8 period. The pollution sources include transport, industry, construction, waste burning, energy, residential sources, road dust and other groups of sources. Stubble burning and pollution across the National Capital Region were not considered. Congratulations! The analysis shows vehicular pollution at more than half of all sources, followed by household pollution between 12.5 and 13.5%. Industry contributed 9.9-13.7% of the pollutants, construction 6.7-7.9%, waste burning 4.6-4.9% and road dust, 3.6-4.1%. This indicative composition is based on the trend every alternate hour in each 24 hours of the study period. An additional CSE analysis of the traffic speed in the city — a measure of congestion — on 15 key stretches during the study period shows that traffic congestion is back to pre-pandemic levels and correlates with the pollution peaks. The traffic speed improved dramatically during the lockdown in 2020. The mean travel speed now is 26 kmph and in peak hours, 23 kmph. In off-peak hours, it is 32 kmph. The speed in the same period in 2019 was 23 kmph in the peak hour, showing traffic build-up has returned to pre-Covid levels, the report said. The CSE report added, “While Delhi needs to speed up action on all key sources of pollution, it requires urgent action to scale up integrated public transport systems, walking and cycling infrastructure, and city-wide parking area management plans to restrain vehicle use. In absence of this reform, Delhi is unable to enforce emergency action to control traffic volumes during smog episodes. Vehicle numbers are explosive at 1.3 crore.” Anumita Roy Chowdhury, executive director (research and advocacy), CSE, said, “After the closure of all coal-based power plants, expansion of natural gas usage in industry and controls on dirty fuels, vehicles have emerged as the biggest real-time contributor among the local sources of winter pollution in Delhi this year. Action on transportation has to gather strong momentum. At the same time, action on waste management, clean energy access in households and dust control must be speeded up.”

Delhi 'very poor' on Friday, study puts vehicular pollution as top reason

Air pollution became worse after people violated a ban and burnt firecrackers on Diwali on November 4, but the problem was compounded by other sources. Toxic air shrouded Delhi for another day, making it the second most polluted city on the planet as an environment group’s report said vehicles accounted for 50 per cent of the pollution. The air quality index (AQI) in Delhi was in the 'very poor' category at 8am, according to the state-run System of Air Quality and Weather Forecasting And Research (SAFAR). Readings below 50 are considered safe and anything above 300 is hazardous or 'severe'. Air pollution became worse after people violated a ban and burnt firecrackers on Diwali on November 4, but the problem was compounded by stubble burning by farmers in areas adjoining Delhi. Green group Centre for Science and Environment (CSE) said that vehicles' comprised half of Delhi's pollution in the early phase of this year's winter, from October 24 to November 8. Vehicular effluents were followed by household pollution (12.5-13.5 per cent), industry (9.9-13.7 per cent), construction (6.7-7.9 per cent), waste burning and road dust, said CSE’s analysis based on real-time data. Many other places in north India recorded an AQI between 'very poor' and 'severe'. IQAir, a website which monitors air pollution around the world, had Pakistan’s Karachi on the top of its worst-places list and Delhi next. Kolkata and Mumbai were the other Indian cities on the list. The toxic air pollution levels underline the risks faced by India as it discusses climate priorities at the global negotiations at the COP26 summit in Glasgow. Prime Minister Narendra Modi pledged last week that the world’s third-worst emitter will aim to reach net-zero by 2070. Air pollution costs Indian businesses $95 billion or roughly 3 per cent of its GDP every year, according to U.K.-based non-profit Clean Air Fund and the Confederation of Indian Industry, Bloomberg reported last week.

Vehicles Accounted For 50% Delhi Pollution In Early Winter, Says Report

Vehicles' contribution in Delhi pollution is followed by household pollution, industry and construction, the report said Vehicles accounted for more than 50 per cent of Delhi's pollution during the early phase of this year's winter, from October 24 to November 8, according to an analysis by the green think tank Centre for Science and Environment (CSE). The CSE study released here today is based on real-time data on source contribution from the Decision Support System for Air Quality Management of the Indian Institute of Tropical Meteorology (IITM) in Pune. "The analysis clearly shows vehicles' contribution is half or more. This is followed by household pollution (12.5-13.5 per cent), industry (9.9-13.7 per cent), construction (6.7-7.9 per cent), waste burning and road dust (each varied between 4.6-4.9 per cent and 3.6-4.1 per cent, respectively)," it said. The Decision Support System of IITM is part of the Air Quality Early Warning System and provides information on the potential emission sources in Delhi. It also tracks data from sources outside Delhi -- 19 districts in the national capital region -- as well as biomass burning in the neighbouring states. During November 2-6, the contribution of pollution sources in NCR dominated the initial phase -- going up to 70-80 per cent. Its share declined during the smog episode post-Diwali when the relative contribution of Delhi's own sources increased. Similarly, the contribution of biomass burning from other states remained low in the initial pre-Diwali phase but peaked post-Diwali. Clearly, the calm conditions during the smog episode post-Diwali have reduced intrusion of cross-boundary movement from NCR and enhanced the share of local pollution in Delhi, the CSE said. On the other hand, the long-range transport wind brought more pollution from biomass burning from neighbouring states, it said.

Vehicles accounted for 50% of Delhi’s air pollution Read more at: https://www.oneindia.com/india/vehicles-accounted-for-50-of-delhi-s-air-pollution-3334664.html

Vehicles accounted for more than 50 per cent of Delhi's pollution during the early phase of this year's winter, from October 24 to November 8, according to an analysis by the green think tank Centre for Science and Environment (CSE), PTI reported. The CSE study released here today is based on real-time data on source contribution from the Decision Support System for Air Quality Management of the Indian Institute of Tropical Meteorology (IITM) in Pune. Read more at: https://www.oneindia.com/india/vehicles-accounted-for-50-of-delhi-s-air-pollution-3334664.html?story=1

Delhi Pollution News: CSE की रिपोर्ट, दिल्ली में गाड़ियां ही घोल रही हैं हवा में आधा जहर

नई दिल्ली: इन सर्दियों की शुरुआत में राजधानी में प्रदूषण में सबसे अधिक हिस्सेदारी गाड़ियों की रही। गाड़ियों ने प्रदूषण बढ़ाने में 50 प्रतिशत हिस्सेदारी निभाई। 24 अक्टूबर से 8 नवंबर के बीच की विश्लेषण रिपोर्ट सीएसई (सेंटर फॉर साइंस एंड एनवायरमेंट) ने जारी की है। इस रिपोर्ट में आईआईटीएम पुणे के डिसिजन सपोर्ट सिस्टम से मिले रियल टाइम डेटा को शामिल किया है। इससे प्रदूषण के सोर्स का पता चलता है। गाड़ियों के अलावा प्रदूषण बढ़ाने में घरों से होने वाला प्रदूषण, उद्योग, निर्माण कार्य, कूड़ा और सड़कों की धूल शामिल है। सीएसई ने 27 अक्टूबर से 6 नवंबर के बीच ट्रैफिक स्पीड के ट्रेंड को भी जानने की कोशिश की। यह ट्रैफिक स्पीड़ 15 प्रमुख सड़कों पर की गई। सीएसई की एग्जीक्यूटिव डायरेक्टर अनुमिता रायचौधरी के अनुसार इन सर्दियों में प्रदूषण की बड़ी वजह गाड़ियां ही रही हैं। दिल्ली में इंडस्ट्रीज ने नेचुरल गैस को अपनाया है। गंदे ईधन का इस्तेमाल कंट्रोल हुआ है। कोयले से चलने वाले पावर प्लांट को बंद किया गया है। ऐसे में अब गाड़ियां प्रदूषण की सबसे बड़ी वजह बन रही हैं। सीएसई ने इस आकलन में हर दूसरे घंटे का डेटा लिया है। गाड़ियां इस दौरान राजधानी को 50 या इससे अधिक प्रदूषित करती रही हैं। अन्य कारणों में घरों से निकलने वाला प्रदूषण शामिल है। इसकी हिस्सेदारी 12.5 से 13.5 प्रतिशत के बीच रही। तीसरे नंबर पर इंडस्ट्री (9.9 से 13.7 प्रतिशत), निर्माण (6.7 से 7.9 प्रतिशत), कूड़ा जलाना (4.6 से 4.9 प्रतिशत) और सड़कों की धूल (3.6 से 4.1 प्रतिशत) रहे।

दमघोंटू हवा: दिल्ली-एनसीआर की वायु फिर हुई जहरीली, लगातार दूसरे दिन गाजियाबाद देश का सबसे प्रदूषित शहर

पड़ोसी राज्यों में पराली जलने की घटनाएं नहीं थम रही हैं। छठ महापर्व के दौरान भी दिल्ली-एनसीआर में जमकर आतिशाबाजी हुई। नतीजा, बृहस्पतिवार को हवा की सेहत बिगड़कर गंभीर श्रेणी में पहुंच गई है। दिनभर सड़कों पर स्मॉग की मोटी परत छाई रही और दृश्यता का स्तर कम रहा। स्मॉग के कारण लोगों को आंखों में जलन व सांस संबंधी परेशानियों का सामना करना पड़ा। अगले 24 घंटे में भी दमघोंटू हवा से राहत मिलने की उम्मीद नहीं है। हवा की रफ्तार कम होने के कारण आज हवा की गुणवत्ता और भी बिगड़ सकती है। सफर के मुताबिक, बीते 24 घंटे में पड़ोसी राज्यों में 3,914 पराली जलने की घटनाएं दर्ज की गई हैं। इसकी दिल्ली के प्रदूषण में 26 फीसदी हिस्सेदारी रही है। हवा की रफ्तार कम होने व उत्तर-पश्चिम दिशा से आने वाली हवाओं के कारण दिल्ली-एनसीआर में प्रदूषण बढ़ रहा है। सफर के परियोजना निदेशक गुरफान बेग के मुताबिक, स्थानीय स्तर पर चलने वाली हवाएं 5.5 किलोमीटर प्रतिघंटा की रफ्तार से चल रही हैं। लेकिन, बृहस्पतिवार की रात से इनकी रफ्तार में कमी होगी और यह अधिक शांत हो जाएगी। इससे दिल्ली-एनसीआर में प्रदूषण का स्तर गंभीर श्रेणी में बढ़ेगा। आगामी 13 नवंबर से प्रदूषण से हल्की राहत मिलने के आसार हैं। हालांकि, तब भी हवा बहुत खराब श्रेणी के उच्चतम स्तर में दर्ज की जाएगी। बीते 24 घंटे में हवा में पीएम 10 का स्तर 387 व पीएम 2.5 का स्तर 237 माइक्रोग्राम प्रति घन मीटर रहा। दोनों प्रदूषक बहुत खराब श्रेणी में दर्ज किए गए हैं। Read more: https://www.amarujala.com/delhi/ghaziabad-most-polluted-city-in-the-country-for-the-second-consecutive-day?pageId=1

Vehicles the biggest pollution source in Delhi, says CSE study

The CSE study has analysed the real-time data on source contribution done by the Decision Support System (DSS) for Air Quality Management of the Indian Institute of Tropical Meteorology (IITM) in Pune. Vehicles have emerged as the biggest contributor to particulate pollution in Delhi. Their real time share increased to more than 50 per cent during the early phase of winter (October 24-November 8, 2021), says a study released on Thursday by the Centre for Science and Environment (CSE). The CSE study has analysed the real-time data on source contribution done by the Decision Support System (DSS) for Air Quality Management of the Indian Institute of Tropical Meteorology (IITM) in Pune. The other contributors, in descending order, are household pollution, industries, the construction sector, solid waste and road dust.

Vehicular emissions greatest contributor to air pollution ranges in Delhi: Evaluation

The CSE evaluation famous that autos contribution has been half or extra in the course of the examine interval Delhi air air pollution: Though there are numerous elements chargeable for the air pollution degree in Delhi, vehicular emissions are mentioned to be the most important contributor to Delhi’s PM 2.5 ranges, by way of native sources of air pollution. This evaluation got here from the Centres for Science and Surroundings (CSE) and is predicated on knowledge for each alternate hour from october 24 to November 8. The information is sourced from the Resolution Assist System (DSS) developed by the Indian Institute of Tropical Meteorology, Pune. It has been analysed to find out completely different sources of air pollution ranges chargeable for air pollution in Delhi. The CSE evaluation famous that autos contribution has been half or extra in the course of the examine interval. Anumita Roychowdhury, government director, Analysis and Advocacy, CSE, who was a part of the crew that carried out the evaluation mentioned this determine could be round 50-53 per cent. As per the evaluation, the contribution of family air pollution stood at 12.5-13.5 per cent and of trade’s, it stood at 9.9-13.7 per cent. The contribution of building stood at 6.7-7.9 per cent whereas waste burning air pollution was at 4.6-4.9 per cent. The contribution of street mud stood at 3.6-4.1 per cent. The biomass burning air pollution from different states remained low throughout pre-Diwali instances however soared publish Diwali. Transport winds additionally introduced in pollution from biomass burning in different states. The evaluation additionally famous that nitrogen dioxide ranges improve within the setting when site visitors congestion will increase, and journey velocity reduces. On November 5, the NO2 degree was near 70 µg/m3 between 6 pm and seven pm, up from 40 µg/m3, between 2 pm and three pm. Peak hours within the night in Delhi NCR are normally between 6 pm and eight pm. Google Map knowledge was analysed for 15 main roads in Delhi and the journey time and velocity alongside these roads.

Delhi-NCR Witnesses Season’s Worst AQI At 471 As Thick, Toxic Smog Engulfs Region

The eye-stinging smog also lowered visibility to 200 metres at several places in Delhi-NCR, which has been witnessing hazardous pollution levels since early November. New Delhi: Air pollution in Delhi-NCR worsened on Friday as the toxic smog grew thicker and the 24-hour average Air Quality Index (AQI) reached 471 by 4pm in the evening. The eye-stinging smog also lowered visibility to 200 metres at several places in the region, which has been witnessing hazardous pollution levels since early November. At 471, Delhi recorded the worst AQI of the season. It was 411 on Thursday. Over 4,000 farm fires accounted for 35 per cent of Delhi’s pollution on Friday. The city has recorded severe air quality on six of the last eight days after Diwali. People in the national capital breathe the worst air between November 1 and November 15 every year, according to an analysis by the Delhi Pollution Control Committee (DPCC). Faridabad (460), Ghaziabad (486), Greater Noida (478), Gurugram (448) and Noida (488) also recorded severe air quality at 4 pm. 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”. According to the Central Pollution Control Board (CPCB), the 24-hour average concentration of lung-damaging fine particles known as PM2.5 in Delhi-NCR crossed the 300 mark around midnight and stood at 381 micrograms per cubic metre at 4 pm (Friday), more than six times the safe limit of 60 micrograms per cubic metre. The PM10 level was recorded at 577 micrograms per cubic metre. According to the Graded Response Action Plan (GRAP), the air quality is considered to be in the emergency category if the PM2.5 and PM10 levels continue to be above 300 micrograms per cubic metre and 500 micrograms per cubic metre respectively for 48 hours or more. ALSO READ | Visibility In Delhi To Remain Poor For Next 3 Due To Smog: IMD Officials from the India Meteorological Department (IMD) said moderate fog and low temperatures in the morning — Delhi recorded a minimum temperature of 12.6 degrees Celsius on Friday — and calm winds have been trapping pollutants close to the ground. Advertisement. Scroll to continue reading. A Rapid Metro train makes its way amid low visibility due to a thick layer of smog, in Gurugram, Friday. (PTI) “Visibility levels at the Indira Gandhi International Airport and the Safdarjung Airport dropped to 200-500 metres due to moderate fog. It (fog) has intensified on Friday due to high humidity,” an official said. Green think tank Centre for Science and Environment (CSE) had Wednesday said the ongoing smog episode is a public health emergency and could be the longest in four years. The longer duration of this year’s smog, despite relatively windier local conditions, might be due to a lack of pollution control measures in the city, the CSE had said in a report. In another report, it said vehicles accounted for more than 50 per cent of Delhi’s pollution during the early phase of this year’s winter, from October 24 to November 8. According to the Ministry of Earth Sciences’ air quality forecasting agency SAFAR, stubble burning has accounted for at least 25 per cent of Delhi’s PM2.5 pollution for nine days on the trot, starting November 4.

Smog tightens grip on Delhi-NCR; AQI season"s worst at 471

The layer of eye-stinging smog lingering over Delhi-NCR thickened on Friday, giving an orange tint to the sun and lowering visibility to 200 metres at several places in the region reeling under hazardous pollution levels since early November. Over 4,000 farm fires, which accounted for 35 per cent of Delhi"s pollution on Friday, played a major role in pushing the 24-hour average Air Quality Index (AQI) to 471 by 4 pm, the worst this season so far. It was 411 on Thursday. The city has recorded severe air quality on six of the last eight days after Diwali. According to an analysis by the Delhi Pollution Control Committee (DPCC), people in the national capital breathe the worst air between November 1 and November 15 every year. Faridabad (460), Ghaziabad (486), Greater Noida (478), Gurugram (448) and Noida (488) also recorded severe air quality at 4 pm. 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". According to the Central Pollution Control Board (CPCB), the 24-hour average concentration of lung-damaging fine particles known as PM2.5 in Delhi-NCR crossed the 300 mark around midnight and stood at 381 micrograms per cubic metre at 4 pm (Friday), more than six times the safe limit of 60 micrograms per cubic metre. The PM10 level was recorded at 577 micrograms per cubic metre. According to the Graded Response Action Plan (GRAP), the air quality is considered to be in the emergency category if the PM2.5 and PM10 levels continue to be above 300 micrograms per cubic metre and 500 micrograms per cubic metre respectively for 48 hours or more. Officials from the India Meteorological Department (IMD) said moderate fog and low temperatures in the morning -- Delhi recorded a minimum temperature of 12.6 degrees Celsius on Friday -- and calm winds have been trapping pollutants close to the ground. "Visibility levels at the Indira Gandhi International Airport and the Safdarjung Airport dropped to 200-500 metres due to moderate fog. It (fog) has intensified on Friday due to high humidity," an official said. Green think tank Centre for Science and Environment (CSE) had Wednesday said the ongoing smog episode is a public health emergency and could be the longest in four years. The longer duration of this year"s smog, despite relatively windier local conditions, might be due to a lack of pollution control measures in the city, the CSE had said in a report. In another report, it said vehicles accounted for more than 50 per cent of Delhi"s pollution during the early phase of this year"s winter, from October 24 to November 8. According to the Ministry of Earth Sciences" air quality forecasting agency SAFAR, stubble burning has accounted for at least 25 per cent of Delhi"s PM2.5 pollution for nine days on the trot, starting November 4. Gufran Beig, the founder project director of SAFAR, said stubble burning generally contributes in PM2.5 but this time its coarser particles in PM10 are also becoming a lead pollutant at several locations in Delhi. "This is a new feature in winter period. This is mainly because of particle growth mechanism due to high humidity at night and increased humidity during the day probably due to water sprinkling which also increases the holding capacity of the air. Since flow is regular many PM2.5 particles are growing towards PM10 (sic),” he said. The share of farm fires in Delhi"s pollution had increased to 48 per cent on Sunday, the highest since November 5, 2018, when it was recorded at 58 per cent. Last year, the share of stubble burning in Delhi"s pollution had peaked at 42 per cent on November 5. In 2019, crop residue burning accounted for 44 per cent of Delhi"s PM2.5 pollution on November 1. Delhi Environment Minister Gopal Rai Friday launched the second leg of a campaign to control dust pollution. On Thursday, he had launched a month-long campaign to prevent open burning of waste and biomass in the city in a bid to further cut down pollution from local sources. PTI GVS SMN SMN

दिल्ली में मौसम की पहली घनी धुंध, 4 सालों में सबसे लंबे समय तक बने रहने का अनुमान

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। नई दिल्ली: दिल्ली और राष्ट्रीय राजधानी क्षेत्र में मौसम की पहली घनी धुंध छा गई है और इसके दो और दिनों तक रहने की आशंका है। विज्ञान एवं पर्यावरण केंद्र (CSE) ने बुधवार को यह जानकारी दी। 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। सीएसई में अनुसंधान 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 गई है।’’ 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। दिल्ली में मौसम की पहली घनी धुंध, 4 सालों में सबसे लंबे समय तक बने रहने का अनुमान 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। नई दिल्ली: दिल्ली और राष्ट्रीय राजधानी क्षेत्र में मौसम की पहली घनी धुंध छा गई है और इसके दो और दिनों तक रहने की आशंका है। विज्ञान एवं पर्यावरण केंद्र (CSE) ने बुधवार को यह जानकारी दी। 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। सीएसई में अनुसंधान 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 गई है।’’ 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। सीएसई ने कहा, ‘‘दिल्ली के औसतन दैनिक पीएम2.5 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।’’

Weather Update: इन राज्यों में अगले 2 दिन भारी बारिश की चेतावनी, दिल्‍ली में छाई धुंध

नई दिल्‍ली. बंगाल की खाड़ी (Bay of Bengal) के ऊपर बना निम्‍न दबाव का असर अब कई राज्‍यों में दिखाई पड़ने लगा है. मौसम विभाग (Meteorological Department) के मुताबिक जिस तरह के हालात दिखाई पड़ रहे हैं उसे देखने के बाद अनुमान लगाया जा रहा है कि निम्‍न दबाव बहुत जल्‍द दबाव वाले क्षेत्र में तब्‍दील हो जाएगा और कई राज्‍यों में भारी बारिश (Rain) होगी. मौसम विभाग के मुताबिक अगले कुछ दिनों में तमिलनाडु (Tamil Nadu) और उसके आसपास के इलाकों में भारी बारिश होने की आशंका है. चेन्‍नई (Chennai) में पिछले कई दिनों से हो रही बारिश में कई क्षेत्रों में कमी देखने को मिली है लेकिन तमिलनाडु के नागापट्टिनम और केंद्र शासित प्रदेश पुडुचेरी के कराईकल जैसे क्षेत्रों में भारी से बहुत भारी बारिश हुई. मौसम विभाग से मिली जानकारी के मुताबिक एक ट्रफ रेखा दक्षिण-पूर्व बंगाल पर बने चक्रवाती हवाओं के क्षेत्र से तमिलनाडु तट से दूर दक्षिण-पश्चिम बंगाल की खाड़ी तक फैली हुई है. इसका असर अब मौसम पर दिखाई दे रहा है. मौसम पूर्वानुमान के मुताबिक केरल और तमिलनाडु के कुछ हिस्सों, तटीय आंध्र प्रदेश और अंडमान और निकोबार द्वीप समूह के अलग-अलग हिस्सों में अगले 24 घंटे के अंदर हल्की से मध्यम बारिश हो सकती है. विज्ञापन दिल्ली और राष्ट्रीय राजधानी क्षेत्र में मौसम की पहली घनी धुंध छा गई है और इसके दो और दिनों तक रहने की आशंका है. विज्ञान एवं पर्यावरण केंद्र (सीएसई) ने जानकारी देते हुए बताया कि 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. सीएसई में अनुसंधान 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 गई है. चार वर्षों में सबसे लंबे समय तक धुंध बने रहने का अनुमान 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.

मुना से झाग खत्म करने के लिए पानी का छिड़काव करने के पीछे क्या लॉजिक है?

दिल्ली में यमुना नदी में बन रहे झाग को खत्म करने के लिए पानी का छिड़काव किया जा रहा है. साथ ही झाग को नदी के तटों तक आने से रोकने के लिए बैरिकेड्स लगाए जा रहे हैं. न्यूज एजेंसी ANI ने एक वीडियो ट्वीट किया है. इसमें दिल्ली जल बोर्ड का एक कर्मचारी कहता है, झाग खत्म करने के लिए पानी छिड़काव से क्या होगा? यमुना में झाग बनना प्रदूषित नदी की निशानी है. एक्सपर्ट्स का मानना है कि अब भी शहर के कई हिस्सों का सीवर बिना ट्रीटमेंट के ही यमुना में गिर रहा है, जो झाग बनाता है. सेंटर फॉर साइंस एंड एनवायरनमेंट (CSE) में जल कार्यक्रम की वरिष्ठ प्रबंधक सुष्मिता सेनगुप्ता के मुताबिक, नदी में फॉस्फेट से झाग बनता है. यमुना का जलस्तर इस समय कम है. पानी का प्रवाह कम है. ऐसे में प्रदूषक कण एक परत बना लेते हैं. खास तौर पर यमुना में फास्फेट की मात्रा इस झाग की परत के लिए जिम्मेदार है. उन्होंने दी लल्लनटॉप को फोन पर बताया, दिल्ली में 50 प्रतिशत एरिया सीवर वाला है. 50 प्रतिशत वेस्ट नदी में ऐसे ही डंप हो रहा है. क्योंकि यहां के घर सीवर ट्रीटमेंट प्लांट से कनेक्टेड नहीं हैं. सीवेज के कारण यमुना एकदम से प्रदूषित हो गई है. झाग फास्फेट से बन रहा है. जो हाउसहोल्ड डिटर्जेंट या कम्युनटी लेवल लॉन्ड्री या बॉयलर के पानी से फास्फेट आ रहा है. जो इंडस्ट्री से यमुना में गिरने वाला पानी है उसी से झाग बन रहा है. इस साल की शुरुआत में दिल्ली प्रदूषण नियंत्रण समिति (DPCC) ने एक रिपोर्ट निकाली थी. इसमें बताया गया है कि कहां-कहां फास्फेट बढ़ रहा है. केंद्रीय प्रदूषण नियंत्रण बोर्ड (CPCB) की एक रिपोर्ट में कहा गया है कि झाग का निर्माण दो जगह पर होता है. आईटीओ के डाउनस्ट्रीम और ओखला बैराज. ओखला बैराज पर ऊंचाई से पानी गिरने से फास्फेट और सरफेक्टेंट पानी में घुलते हैं और झाग बनाते हैं.

Kaithal tops Hry farm fires, state count sees 33% drop

Gurgaon: Kaithal has reported the highest number of farm fires in Haryana this season, at 1,066, followed by Fatehabad (938), Karnal (848), Kurukshetra (518), Ambala (267), Yamunanagar (142) and Sirsa (148), according to data from the Haryana Space Applications Centre (HARSAC). Districts with small paddy cultivation areas, such as Palwal (101), Panipat (99) and Sonipat (70), have also witnessed stubble-burning incidents. The data indicates 4,753 cases of stubble fires in the state between September 15 and November 10, which is significantly lower than 7,083 recorded in the same period last year — a drop of nearly 33%. However, this could change, said experts. Since rains lingered well into October this time, farm fires began late and the next couple of weeks could see an increase as farmers clear their fields for the sowing season. In the past 24 hours, about 200 active fire locations (AFLs) have been reported in the state. “The number of farm fires from October 1 to November 6 was less when we look at data from the past four years. But after November 6, the fires have increased. This is happening because of the long monsoon this year. The region might witness a spike in farm fires in the coming two weeks,” said Anumita Roychowdhury, executive director, research and advocacy, Centre for Science and Environment. State agriculture officials, meanwhile, said efforts are being made to provide subsidised machinery to farmers to manage crop waste. An agriculture department official in Kaithal pointed out that the number of active fire locations in the district is down from last year’s 1,418. “Satellite data capturing AFLs is not correct all the time. Also, the fires which have been picked up by satellite are very small that are not spread across 1 acre or 2 acres of land,” said Karam Chand, deputy director, agriculture department, Kaithal. Chand added that a spike in farm fires was unlikely as “all seeds are already sown for the next harvest by now”. Aditya Pratap Dabas, deputy director, agriculture department, Karnal, said officials had been working very closely with farmers for crop residue management. “We have successfully reduced the incidents of farm fires so far despite having 1.7 lakh hectares of paddy cultivation land, the highest in Haryana. Till now, we have imposed a fine of Rs 11 lakh and filed 72 FIRs,” he added. Dabas said the actual number of stubble-burning incidents in Karnal could be less than the 848 reported by HARSAC as “nearly 200 farm locations picked up by satellite were not identified” by their team. He added that he doesn’t expect more farm fires in the coming days because “wheat has already been sown in 50% of the land”. Dr Virender Singh Arya, director, HARSAC, said agencies working on active farm fires incidents this year have a standardised methodology. “All agencies have been directed to monitor farm fires from September 15 to November 30 across the country, which will enable us to get a clear picture. The fires started late this year and we are analysing the data every day,” he added. According to Haryana government data, the total area under paddy in the state was 34 lakh acres last year. This year, the area where cultivation has taken place has been reduced to 30.4 lakh acres. Agriculture officials, therefore, expect that the incidents of stubble burning will remain low this time compared to last year.

Delhi in grip of season's first smog episode, likely to be longest in 4 yrs: 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. 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.