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Lockdown eases seasonal smog - but less than expected

02.04.2020
Příroda
Air quality index peaks at three across England and Wales, but wood fires and farming continue to cause pollutionWe think of spring as the time of blossom and fresh new green growth, but it is often the most polluted time of year in western Europe. Last week, as winds turned easterly, particle pollution once again spread across western Europe. Spring smogs can cause particle pollution to reach the top value of 10 in the UK air quality index, but four to nine is more typical.With the lockdown in place, the increases were less than normal. The air quality index peaked at three over most of England and Wales. A few places in south-east England, Yorkshire and north Wales reached four, the level where health advisory messages are issued. After three days, a welcome change of wind direction at the weekend pushed the polluted air southwards. Continue reading...
Zdroj: The Guardian

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