5 ms·
Let's do an exercise as presented in the article and accept CO2 level increases are irreversible: The Jurassic had 5 times more CO2 than today. [1] Modern cli
by meric 8y ago
Let's do an exercise as presented in the article and accept CO2 level increases are irreversible:
The Jurassic had 5 times more CO2 than today. [1]
Modern climate change is slower than the K-T mass extinction event, when photosynthesis was halted. [2]
[1] https://www.livescience.com/44330-jurassic-dinosaur-carbon-dioxide.html https://www.livescience.com/44330-jurassic-dinosaur-carbon-d...
[2] https://en.wikipedia.org/wiki/Cretaceous–Paleogene_extinction_event https://en.wikipedia.org/wiki/Cretaceous–Paleogene_extinctio...
- rbanffy 8y ago> Modern climate change is slower than the K-T mass extinction event We haven't seen how fast our change can get. We are not over out own mass extinction event yet.
- soVeryTired 8y agoWhat conclusion are we meant to draw from that exercise?
- mavhc 8y agoHumans: Better for Earth than being hit by a giant asteroid
- specialist 8y agoHuman carbon release rate is unprecedented in the past 66 million years of Earth's history [2016] https://www.sciencedaily.com/releases/2016/03/160321123656.htm https://www.sciencedaily.com/releases/2016/03/160321123656.h... Otherwise, I can't imagine what point you're trying to make.
- deleted 8y ago[deleted]
- majewsky 8y agoNo one said that CO2 level increases are irreversible. Just that they're pretty much irreversible on the required time scales.
- anvandare 8y agoWe can deal with small and fast changes, or big and slow changes, but not big and fast. The problem is not the CO2 levels themselves, or the heat, or even the climate. Life can exist and thrive in phenomenally hostile environments. It's the speed and size of the shift. Life needs time to adapt, depending on its size (which is why almost nothing >25 kg survived the K-T event). I'm comfortable when my car goes from 60 mph to 0 in half a minute. I'm not going to be comfortable when my car goes from 60 mph to 0 in a second.