Australia Makes Sure Every Place on Earth Spreads Deadly Air Pollution
There is no safe place on earth that is free from deadly air pollution. PHOTOS/ DOC iStock
SIDNEY – Recent research conducted by Monash University School of Public Health and Preventive Medicine in Melbourne, Australia has found no place on Earth that is free from deadly air.
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The results of this research found an increase in airborne toxic particles in various parts of the world during the 2000-2019 period.
The study found that only 0.001% of the global population is living at PM2.5 levels, which are considered safe by WHO standards.
PM2.5 is an air pollutant consisting of solid microparticles and the smallest liquid droplets around 10 nm to 2.5 µm.
PM2.5 easily penetrates biological barriers and therefore poses the greatest threat to the body. The results of the new study suggest that the size of the hazard may be greater than previously thought.
To conduct the research properly, the research team used data from various sources, such as: air quality monitoring observations, satellite-based meteorological and air pollution detectors, statistical and machine learning methods.
“In this study, we used an innovative machine learning approach to integrate multiple meteorological and geological information to estimate global surface level daily PM2.5 concentrations at a high spatial resolution of approximately 10km × 10km for global grid cells in 2000-2019, focusing on the areas above the WHO safe limit (the threshold is debatable),” said the leader of the research, professor Yuming Guo,
As reported by Sputnik News, researchers have identified PM2.5 change patterns that are specific to each different macro-region period:
“We also recorded relatively high PM2.5 air pollution in August and September in South America and from June to September in sub-Saharan Africa,” said the professor.
The new WHO 2021 guideline limits state that in 2019 only 0.18% of the global land area and 0.001% of the global population have concentrations lower than the annual limit.