Monday 10 April 2023

Good video explainers of Climate Change

Someone on twitter once asked me for good videos on climate change.

I didn't have a great answer then, but I think I would now. 

A simplistic understanding?

I recently watched some videos that demonstrated that I, like most people, had the sort of 'high-school' level understanding of climate change. 

Sabina Hossenfelder is a top physicist and she recently admitted she had just the basic understanding until recently. In a recent video she explains the basic and more accurate versions


Denialist tricks

You'll notice that climate science deniers are often very adept at challenging the simplistic 'school-level' version of climate change. 

They often make claims about climate science that no scientist would support or believe, like that carbon dioxide is the only thing that affects the climate. However, their demonstrations that CO2 isn't the only thing that matters does not debunk the key claim which is that our CO2 emissions are having a serious impact.  b

Denialists aren't engaged in honest science - they simply cherry pick anything that appears to support their pre-determined agenda. They are driven by politics rather than science. 

We have clear evidence that the Earth has been warming in recent decades. Denialists can't deny this any more, so they have to come up with other explanations for the warming - often that it is due to the sun. 

Simon Clark has a very good video explaining why the sun CANNOT be behind global warming



I think this was the video that helped me to understand the point about how climate change really works. The warming of the atmosphere due to the greater amount of CO2 (and other GHGs) puts the system out of balance. Since it isn't possible to emit all that extra energy out to the void of space it has to come back down to Earth. 

It is no doubt hard to know for sure what impacts all that extra heat energy is going to do, but it seems hubristic to think that adding a load of heat to finely balanced systems around the world is going to work out well.

A very good lecture

For a very straightforward (and well-produced) full lecture explaining climate science I can recommend Myles Allen's Gresham College lectures, particularly The Atmospheric Physics Behind Net Zero



Do add further suggestions below! 

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