The global scientific team plans to compile data on air quality for the next 46 megacities in Africa, Asia and the Middle East using air surveillance from instruments. on NASA and European Space Agency (ESA) satellites for 2005 to 2018.
Published today at Scientific advances, the study shows a rapid decline in air quality and an increase in urban air pollutants that are dangerous to health. In all cities, the authors saw a significant increase in pollutants per year of up to 14% for nitrogen dioxide (NO.2) and up to 8% for fine particles (PM2.5), and increasing the precursors of PM2.5 and up to 12% for ammonia and up to 11% for conversion solvents.
Researchers have reported a rapid decline in air quality in future industries and infrastructure such as road transport, fire extinguishing, and heavy use of coal and other industries. the wood.
The lead author, Dr. Karn Vohra (UCL Geography), who completed his studies as a Ph.D. students at the University of Birmingham, said: “Open fires of biomass for land reclamation and agricultural waste disposal in the past overwhelmingly dominated air pollution in the tropics. Our focus is on this. “We’re seeing a new era of air pollution in these cities. With some of the same annual reduction rates seen by other cities in a year.”
The scientists also found an increase of 1.5 to four times the city’s population with air pollution during the study period in 40 of the 46 cities for NO.2 and 33 of the 46 cities for PM2.5.This is due to a combination of population growth and a rapid decline in air quality.
According to the study, more people die than ever before from air pollution in cities in South Asia, including Dhaka, Bangladesh (total of 24,000 people). , and the Indian cities of Mumbai, Bangalore, Kolkata, Hyderabad. , Chennai, Surat, Pune and Ahmedabad (total 100,000 people).
The researchers said that while the number of deaths in African cities has been declining as a result of improved health care across the country as a result of the reduction in premature deaths, the best effects of air pollution on health to come in the years to come. .
Dr. writes. Eloise Marais (UCL Geography) said: “We are continuing to transform air pollution from one region into the future, rather than learning from the mistakes of the past. past and to ensure that the speed of business and economic development does not harm the health of the public. We hope that our result will be stronger. national defense action. “
Cities analyzed in the study:
- ʻApelika – Abidjan, Abuja, Addis Ababa, Antananarivo, Bamako, Blantyre, Conakry, Dakar, Dar es Salaam, Ibadan, Kaduna, Kampala, Kano, Khartoum, Kigali, Kinshasa, Lagos, Lilongwe, Luanda, Lubumbashi, Lusaka, Mombasa, N ‘Djamena, Nairobi, Niamey, Ouagadougou.
- Asia Hema – Ahmedabad, Bangalore, Chennai, Chittagong, Dhaka, Hyderabad, Karachi, Kolkata, Mumbai, Pune, Surat.
- Hikina Hema – Bangkok, Hanoi, Ho Chi Minh City, Jakarta, Manila, Phnom Penh, Yangon.
- Middle East – Riyadh, Sana’a.
Urban air killed more than 1.8 million people worldwide in 2019
Karn Vohra et al, Rapid increase in primary mortality due to anthropogenic air pollution in fast -growing cities from 2005 to 2018, Scientific advances (2022). DOI: 10.1126 / sciadv.abm4435. www.science.org/doi/10.1126/sciadv.abm4435
Presented by University College London
Directions: Air pollution accounts for 180,000 deaths in hot cities (2022, April 8) Retrieved 8 April 2022 from https://phys.org/news/2022-04-air-pollution- responsible-excess-deaths.html
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