this post was submitted on 12 Jul 2023
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This. It's also not accurate to say it's the warmest we've been in the past 10,000 years, it was likely warmer during the roman warm period, and potentially a couple of other points. So we can only really say it's the warmest we've seen in the last couple hundred years.
That's not to say this isn't concerning, we're on track to smash the roman warm periods average temperatures within our lifetimes and make the earth the hottest it's been since the paleoscene, which would have massive ramifications. But we're not there yet, the problem is that we will likely get there in the next few decades.
I appreciate your optimism.
If you want some more optimism, we actually have slowed the rate of warming from what was predicted 20 years ago. The reality we are living in would have been considered an "optimistic prediction" at one point. We are still warming, things are still going in the wrong direction, but the changes that people have been making to mitigate global warming are making an impact. We might still be going over the cliff, but at least we're doing it with our brakes on instead of full speed ahead. So yes, I do think it will be decades before we truly break temperature records that have been seen by humans, maybe even several decades. That doesn't downplay the significance of the need to stop it though
What about tipping points? I hear about ice cover, ocean currents, and other systems where once we get past a tipping point, additional warming is self sustaining. At that point it doesn't matter if we have our brakes on, we've gone over the cliff right?
If we end up triggering a self-sustaining feedback loop, that's how I understand it, yeah. We still do have some very high risk strategies we could implement, like solar shielding to reduce total light reaching the earth, or bioengineering plants that suck up carbon super efficiently, but it's hard to say what the impacts of those would be
I don’t see either of those happening because there’s no short-term profit. Also, unintended consequences.
I wouldn't consider solar shielding high risk, since it would be easy to design fail-safe, but I totally wouldn't trust bioengineering methods, since life uhh... finds a way.