Scientists say they have found the cleanest air in the world

In a study that was the first of its kind in the bioarosol composition of the Southern Ocean, researchers from Colorado State University identified an atmospheric region that remained unchanged. human activity.
Weather and climate are closely linked by connecting every region of the world to other regions. Like climate changes Scientists and researchers are quickly struggling to find a corner of the world that is not affected by humans due to human activities.

However, Professor Sonia Kreidenweis and her team suspected the weather in the Southern Ocean would be least affected by people and dust on the world continent.

The researchers found that the boundary layer air that feeds the subclouds over the Southern Ocean is free from aerosol particles produced by human activity. – including burning fossil fuels, planting certain crops, fertilizer production and disposal of wastewater – or from other countries around the world.

Air pollution It is caused by aerosols, which are solid and liquid particles, and gases suspended in the air.

The researchers decided to use the bacteria in the air as a diagnostic tool to extract the features of the lower atmosphere.

“The aerosols that control the properties of the SO (Southern Ocean) clouds are strongly linked to the ocean biological processes and appear to be isolated from the distribution of microorganisms in the south and their nutrient accumulation,” said Thomas Hill, the researcher and co-author of the study.

“In general, he suggests that SO is one of the very few places on Earth that is least affected by anthropogenic activities.”

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Scientists exemplified the weather at sea level – as part of the atmosphere that directly touches the ocean – on a research boat from Australia’s Tasmania to the ice edge of Antarctica. Scientists then examined the composition of microbes in the air, which are in the atmosphere and usually scatter thousands of kilometers by wind.

DNA sequencing, source tracking, and orbit trajectories using scientist and first author Jun Uetake They found that the origins of microbes belong to the ocean.

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The researchers concluded that human activities such as pollution or soil emissions caused by aerosols and land use change from soil masses far from the bacterial composition of microbes do not go south and into the air.

Scientists found that the results showed a sharp difference in all other studies from the oceans in both the northern hemisphere and subtropics, which most microbes came from in the wind continent.

In the study published on Monday, National Academy of Sciences Proceedings Book The diary, scientists described the area as “really intact”.

According to the World Health Organization (WHO), air pollution is already a global public health crisis and kills seven million people every year.

Studies show that air pollution heart disease, stroke and lung cancer.

The healthcare organization and low- and middle-income countries stated that more than 80% of people living in urban areas following air pollution suffering from the highest exposure are exposed to air quality levels that exceed WHO guidelines.

However, as studies show, air pollution can exceed geographic boundaries and impress people hundreds of miles away from where it originated.

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