Official China is fixated on controlling everything, including the weather, even when science struggles to provide methods for doing so. China boasts of doing weather modification in Tibet, having spent six decades trying to seed rain over water catchments to compensate for lowland China’s wasteful overuse of water.
It’s a classic case of policy overshooting science, as there is precious little scientific evidence that cloud seeding works.  This is especially true given the vast size and low population density of the Tibetan Plateau: does it really matter if cloud seeding causes the rain to fall here or five kms away? And what if the fall becomes destructive hail, common enough in Tibet without cloud seeding artillery making it worse?
China does not, however, boast of its far bigger impact on Tibetan skies, threatening the health of all living organisms in Tibet: its’ persistent production of illegal chemicals that destroy the protective ozone layer of the upper atmosphere.
The Tibetan Plateau, as Chinese scientists have reminded us for decades, is our planet’s Third Pole. It is like the Arctic and Antarctic not only in being a polar extreme of frigidity but in other ways too. That includes having an ozone hole in the upper atmosphere, which ruins the capacity of this ocean of air above us to protect us from damaging radiation coming at us from outer space, especially from the Sun.
While the ozone holes above the North, South and Tibetan Poles has been well known to science for decades, it seemed a cure was in place. Unlike the climate change treaty negotiations which faltered in Paris in 2015, after crashing in Copenhagen in 2009 due to China’s intransigence, the world has rightly celebrated the 1988 Montreal Protocol on Substances that Deplete the Ozone Layer as a great success. That treaty, banning the industrial production and use of ozone-depleting substances (ODS), was universally accepted, and observed. It became a model for how the world could manage to unite to deal effectively with a threat common to us all, the only one of the environmental conventions that actually works.
Because ODS remain active in the upper atmosphere for a long time, there has been so far very little shrinkage in the polar ozone holes, but the world was on the right track, all countries working together, and Tibetans, vulnerable to high levels of damaging ultra -violet (UV) rays, could look forward to a gradual diminution of the danger.
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