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