Sentences with phrase «when air pollution levels»

Funded by a multinational partnership led by UMass Amherst and including the Himalayan region's Intergovernmental Centre for Integrated Mountain Development (ICIMOD) and the Institute for Advanced Sustainability Studies in Potsdam, Germany, the investigation will follow a cohort of 32 traffic control officers in Kathmandu during two seasons: Cold, dry winter from this month into March, with a second study in the hot, rainy monsoon season from June to August, when air pollution levels are lower.

Not exact matches

Some researchers have pinned the blame on indoor air pollution and a study last year showed that when outdoor ozone levels rose, the number of people inside suffering from so - called «sick building syndrome» also increased.

When his team ran the same scenario but capped air pollution at 2000 levels, ice - free summers in the Arctic started more than a decade earlier in 2045.

The researchers say that although air pollution levels in Western Europe are relatively low when compared to cities in Asia or Latin - America, study participants were still exposed to pollution levels that exceed the values recommended by the World Health Organization.

Singapore's air pollution index is at the worst level since 2006, when Sumatra last experienced severe fires.

High levels of air pollution have become commonplace in Beijing and other Chinese cities, especially during winter months when temperatures drop and more coal is burned when heating systems are switched on.

At its worst it can help create seven more days a year when ozone levels exceed air pollution limits.