Pea souper fogs, those veils of ground level cloud that gave atmosphere to Sherlock Holmes movies, have halved in thirty years – triggering up to a fifth of global warming across Europe, new research shows.
It\’s not a surprise, but the implications might at least annoy some.
It\’s a pretty standard assumption in the models that sulphates (or is it sulfates?) in the atmosphere tend to cool. These thick peas soupers were indeed caused by such things a coal burning, leading to such sulphates being in the atmosphere.
OK, so far so good. However, the potential conclusion that will annoy many is that if we really need to fight climate change, then we might want to recreate the sulphates in the atmosphere in order to do so. Which is exactly what some of the geo-engineers propose. Fire the stuff up into the clouds from giant guns.
What this research show is that it would indeed work. Whether we want to do it is another question, but it would indeed work.