Most people think of the Arctic as a highly pristine clean environment, but this is not always the case. During the long dark Arctic winter, the urban atmosphere can become extremely polluted.
Indeed, at some point during the year, the remote Alaskan city of Fairbanks turns into the most polluted city in the whole of the US.
This is due to the very cold Arctic winter when emissions of gases and particles (such as from wood-burning stoves, traffic, power stations) can become trapped locally at ground level due to the very stable meteorological conditions, with poor vertical mixing. [Read more…] about Arctic pollution: Air quality monitoring at 40°C below zero