Air quality in India's North East states is worsening and while still much better than pollution hotspots in other parts of the country, appear to be under threat by the same sources - vehicles, industry and urbanization that have soiled the air elsewhere, according to an analysis of air quality by the Delhi - based Center for Science And Environment.
So far, air pollution is largely seen as a crisis of the In do Gametic plains, particularly in winter when Delhi and several cities in Uttar Pradesh and Haryana find themselves in the list of the world's most polluted cities. Air in the northeast states, in the popular imagination, is less befouled due to the region's topography that is less conductive to fossil-fuel led Industrialization and Geo - Graphical isolation.
CSE analyzed concentration of PM 2.5, particulate matter sized 2.5 micron or less, from January 1, 2019, to December 7,2021, in Assam, Meghalaya, Tripura, Nagaland, Mizoram, and Arunachal Pradesh over annual and seasonal periods. They relied on live data available from seven continuous ambient air quality monitoring stations (CHASMS) spread across six cities in five states: two stations in Guwahati and one station each in Shillong (Meghalaya), Agartala (Tripura), Kohima (Nagaland), Rizal (Mizoram) and Naharlagun (Arunachal Pradesh).
The number of air quality monitors in the northeast are few and have been installed in the last two years, unlike those in many cities in India. This, therefore, gives only a limited picture of the variability and scale of air pollution.
What CSE found was that the annual, average PM 2.5 levels of Guwahati in 2021 (as of November 30) was 60 micrograms per cubic meter, which was less than that in 2020 but more than in 2019. India upper limit for PM 2.5 is 40.
Agartala, reading for which were available only for 2021, had an annual concentration of 45 whereas Shillong, Kohima and Naharlagun were below the 40-mark.
Shillong was the only other city in the region with a station generating data for over two years but "due to poor data averages could not be considered credible,"the researchers noted," Aizawl and Naharlagun do not meet the minimum data availability requirements but the limited data available indicates that these two would most probably be meeting the annual standard".
That is very personal and confidential information for the news, then what it helped and pollution and mask. Very critical situation of northeast India.
The addition of unwanted substances into the environment that can damage our Earth is called pollution. There are four main types of Pollution; air pollution, water pollution, soil pollution, and noise pollution. The careless activities carried out by humans leads to pollution. Air pollution is caused by vehicles that release smoke in the air and contaminate it, making it difficult for organisms to breathe. Water pollution is caused by dumping waste directly into water bodies. This affects the organisms living in the water as well. We dump waste directly into water bodies, which results in water pollution. When we dump waste into landfills, it results in soil pollution. Noise pollution is invisible, but it is hazardous to our ears.
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