In big cities, traffic and other factors that increase pollution are not paid attention to. The blame is placed on Punjab. The speed of the wind is not so high that it can take the particles of pollution to Delhi or Lahore. Rejected by scientific arguments
Monday 11 November 2024
Chandigarh (News International Newspaper Latest - International Press Agency. November 11, 2024) The Department of Climate Change and Agricultural Meteorology of the Indian Punjab Agricultural University and the Punjab Pollution Control Board say that there is no scientific study that can prove that In the villages of Indian Punjab, there is air pollution in Lahore and Delhi from the fires after harvesting crops, on the contrary, there are scientific arguments that prove that here, the pollution caused by burning the residues after harvesting crops. The particles are not reaching the boundaries of Lahore and Delhi.
According to the report of the British Broadcasting Corporation, the burning of crop residues after harvesting in India and Pakistan is considered to be the main cause of this smog. Contrary to the claims of the experts of Indian Punjab, the governments and experts of India and Pakistan consider this fire as the cause of pollution in Delhi and Lahore.
It should be noted that six weeks ago, when the satellite images were taken of these places, there was a clear sky and there were less signs of fire. Besides, according to research institutes, the land after harvesting crops in any state, including Punjab, India. Smoke from wildfires contributed only 4.44 percent to Delhi's pollution this year. Satellite data from the US space agency NASA shows that India sees more fires than Pakistan. The Secretary of the Ministry of Environment, Raja Jahangir Anwar, while talking to "BBC", said that the Punjab government has evidence based on the satellite data of the American space agency "NASA" and the data and information of the Department of Meteorology that the Indian Punjab The smoke coming from Lahore is an important cause of smog in and around Lahore. To move from one place to another, the wind speed should be more than six kilometers per hour. The particles of pollution in Punjab can neither reach Delhi nor Lahore.
Puneet Kaur Dhingra, head of Meteorological Department, says that the wind speed must be more than six kilometers per hour for the movement of pollutants and smoke in any direction. The wind speed was more than 4 km per hour. For the first time on October 5, the wind speed was recorded at 4.4 km per hour and for the second time on October 24, the wind speed was recorded at 4.1 km per hour. Pollutant particles produced by wildfires cannot travel in any direction. According to the Department of Climate Change, the accumulation of pollution and smoke in a particular place in the months of October and November is related to the decrease in temperature.
He said that when the temperature increases, the air expands and the polluting particles are easily dispersed and when the temperature decreases, the polluting particles stay in one place, so if the smog condition in Lahore and Delhi And if there is pollution, there are reasons behind it. Puneet Kaur Dhingra says that as the temperature rises, the air expands and the pollution spreads. The polluting elements are not completely dispersed and get stuck there, in such a situation, a condition like smoke is created.
Adarsh Pal Vij, chairman of the Indian Punjab Pollution Control Board, says that PM 10 and PM 2.5 pollutant particles released from the gases produced by the fires burned after harvesting the crops in Punjab are far away in any case. He said that there is no research that proves that the pollution of Punjab causes or plays an important role in the pollution of Delhi and Lahore. PM 10 and PM 2.5 particles do not fly that far. Punjab Pollution Control Board's Environmental Scientist Avtar Singh says that after harvesting, the land is set on fire in Lahore as well as in Pakistani Punjab, so Lahore is responsible for the polluted air.
Even under these conditions, PM 10 particles can travel a maximum distance of 25 km while PM 2.5 can travel a maximum distance of 50 km, said SS Marwaha, former chairman of the Indian Punjab Pollution Control Board. When the temperature drops, these particles cannot travel such a distance. Send Indian Institute Professor Vinayak Sinha of the Department of Earth and Environmental Sciences, Tuet of Science Education and Research, admitted that pollution from Punjab has an effect on Delhi's pollution, but it is very minor. Incidents of post-harvest fires have a greater impact on pollution in Delhi than in Punjab.
India's government agency Indian Institute of Science Education and Research says that an analysis conducted in New Delhi Delhi before Diwali and winter showed that the main cause of pollution is the smoke from vehicles rather than fires in fields. Anumita Roy Chowdhury, executive director of the Indian Institute of Science Education and Research, said that the contribution of farm fires to Delhi's air quality during the onset of winter each year is usually the biggest. They believe that it diverts attention from local sources of air pollution.
He said that Delhi's air quality has gone from bad to very bad this year, while the share of field fires in most parts has been between 1 and 3 percent during this phase, adding to the local level of air pollution. According to experts, the AAQI or "Air Quality Index" is a tool for measuring the amount of pollutants in the air that can be used to tell how clean or polluted an area is. It is estimated by AQI Measurements are done by meters that are installed in the area.
In different countries, the method or tools for testing it may be different, but according to the internationally established standard, AQI is divided into six categories, from zero to 50 AQI is considered a clean air. An AKI of 51 to 100 is acceptable, but if it goes from 101 to 150, it can be dangerous for people who are already sick or weak. If the AQI exceeds 151, then the risk increases to the general public. When the AQI is between 201 and 300, such atmosphere is considered extremely unhealthy for humans. This category is called "Health Alert". , which means that there will be health risks for everyone, and when it exceeds 300, the atmosphere is considered "extremely hazardous", in which case a health warning of an emergency situation is issued. is.
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