Smog formation possible in Hong Kong

at least one recent scientific study has shown that the city can, under the right conditions, “form its own smog”.

The study by Hong Kong and Macau air scientists argued that a rapid build-up of particulate matter in the air – a key component of smog – was possible even in the absence of northerly winds that can transport pollutants from afar.

http://www.scmp.com/news/hong-kong/health-environment/article/2076236/ho...

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