South Asian Monsoons Remove Smog, Spread Pollution https://t.co/muzcrQvuAV
— The Aerogram (@theaerogram) June 24, 2018
I really enjoy the tweets from the Aerogram since they provide well-curated content. However this third-party article on Monsoon dispersion of pollution is simply rife with generalities and polemicism, high by even BP’s well-worn standards.
The article starts off on a fascinating note:
As South Asia burns fossil fuels, researchers from Germany say the clockwise-spinning storm pulls the emissions high into the troposphere. There, lightning-fueled chemical reactions transform the pollutants into more stable forms, which fall to earth as harmless rain.
A paen to Mother India cleaning up after her messy spawn. However before we could take any consolation in the good news:
By combining these measurements with computer models of air circulation, the researchers tracked the path of the contaminants and how they changed as they reached higher altitudes.
As expected, at lower altitudes, the South Asian monsoon did disperse pollutants over a wide region, including distant areas like Tibet. However, the scientists also found that the monsoon pulled the polluted air from the atmosphere into the much higher troposphere, where with the assistance of the storm’s lightning, it reacted with other gases, and could be washed out by the rain.
Note they use simulated models to track the pollutants so in a way this isn’t verified or empirical based science. It would have been good to actually validate pollution levels in places like Tibet etc. And then for the final piece de resistance:
Unfortunately, Lelieveld told VOA, “the monsoon is weakening, which can reduce the cleaning mechanism. We also believe that the air pollution contributes to a weakening of the monsoon.” He added, “Intuitively, if the monsoon weakens, the pollution will stay more near the ground rather than being transported upward.”
This is a comment that wouldn’t have even passed muster in our own threads. How do we know the Monsoon is weakening and how do know that air pollution is weakening the Monsoon.
I do think it’s fairly straightforward and uncontroversial to state that we should pollute less but it’s increasingly evident that anthropogenic pollution isn’t as clear-cut a topic as we think it is. The Earth does seem to have some feedback mechanisms and it’s also worth reflect if the human scale of pollution can match natural events (like a volcano eruption etc).
We live in a liberal-defined shibboleth and these new orthodoxies are sometimes even more pernicious than the ones of yore since these are draped in the values and ideals of the enlightenment. Please note I’m not necessarily espousing one view over the other but we as learnt in BP; argument from authority (experts) is a logical fallacy and the article above reeks of it.