One of the scientists working for NASA revealed that air in Syria became purified ever since the war started. On the other hand, pollution is increased in the refugee hotspots.
According to NASA a prolonged war, which leads to significant populations drops through deaths and refugees fleeing, will lead to clearer air, even with detonating bombs being taken into account.
The US space agency, which also doubles as a climate change investigator, has cited the “cleaner air” caused by the war in Syria as proof of how over-populated areas will suffer from worse pollution.
The finding was made by NASA during a globe-wide study of nitrogen dioxide levels, which found the UK, northern Europe, New York and China to be the most polluted places on the planet.
Nitrogen dioxide is given off by car exhausts and industrial burning.
In the Middle East, levels are usually low, and had increased in Iran due to economic growth. But since 2011 in Syria, when the civil war began, levels dropped there.
A NASA spokesman said: “In Syria, nitrogen dioxide levels decreased since 2011, most likely because of the civil war, which has interrupted economic activity and displaced millions of people.”
Areas of high pollution increase are shown in orange to red, with those of big reductions show blue.
The new map shows no areas of orange or red in Syria, and big concentrations of blue over main cities Damascus and Aleppo.
However, Lebanon, where many refugees have gone is largely orange and red, showing large increases.
The NASA spokesman added: “The trend map of the Middle East shows the change in nitrogen dioxide concentrations from 2005 to 2014.
In a NASA video about the research, the narrator said: “We see decreases in Nitrogen Dioxide levels over Syria due to the country’s civil war and displacement of its population.
“Meanwhile, levels have gone up in neighbouring countries where millions of Syrians have taken refuge.”
NASA used high-resolution global satellite maps of air quality indicators to tracked air pollution trends over the last decade in various regions and 195 cities around the globe.
The study found changes in air quality patterns were not random and could be linked to specific events such as a war, as in Syria, major development, or tighter regulation on air quality.
The team examined observations made from 2005 to 2014 by the Dutch-Finnish Ozone Monitoring Instrument aboard NASA’s Aura satellite.
The findings have re-opened the debate on the link between growing world populations and environmental impacts such as air pollution.
With England already one of the most polluted places on Earth, the expected UK population rise over the next decade, according to the Office of National Statistics, will be around 4.4million, taking us from the current 65million to moire than 69 million.
The Global Population Speak Out group is trying to get support for its campaign to try to “educate the world” about the environmental damages caused by over population.