The Christianist authors of ES4, after achieving a crescendo of kookiness, manage to dial it back down to nearly normal as they explain Short-Term Climate Change. They explain things like ENSO and La Niña in terms befitting a science text. But you can see them slipping when they devote a section to volcanism. All that ash! It cools the world!
Um. Actually. Ash is just a part of what causes cooling due to volcanic eruptions. But BJU writers can’t be bothered with little things like sulfur dioxide. They also claim forest fires and “large regional dust storms” can cool the climate like volcanoes. Forest fires in Northern latitudes may cool it a bit, but not because of ash – it’s because all those lovely dark green conifers are gone, which means snow’s free to reflect the sun’s heat, and it’s not like that’s going to reverse the upward trend in warming. If an area hasn’t got snow, even that bit of cooling is unlikely. And, of course, burning trees releases bunches o’ carbon, which ultimately leads to more warming. As for dust storms, sure, those dust clouds can reduce temps – but that’s neglecting the winds that, in some regions, bring warm air right back in. And if increased dust starts landing on snow, you get an increase in solar radiation absorption, and you’ve warmed stuff right up again. [Read more…]