Will have a go at straightening you out Red, but nothing has worked so far so hopes are not high.
People talking about geologic time scales for climate change is silly for the simple reason that we don't live on geologic timescales. Our civilization arose in the blink of an eye, geologically speaking, in a climate that has been very stable. Plants domesticated thousands of years ago are still viable because the growing seasons hardly changed. Now we've dug deep and pulled carbon out of the ground and put it in the atmosphere, such that the atmospheric CO2 levels are 160% of their mean value for the last few thousand years, during the time that we stopped being exclusively dependent on hunting & gathering and started growing our own food. Carbon that was in the ground is now carbon in the atmosphere. And the science of how CO2 traps radiated infrared is long known. So sunlight hits the ground, re-radiates in the IR spectrum but instead of escaping to space it heats the atmosphere that little bit more. CO2 also gets absorbed in the oceans and affects pH levels and such.
So we're pushing the climate very quickly away from a steady state point to which our civilization has adapted. The lower latitudes have been affected by that, and it disrupts the cycles of life in less developed areas that are closer to carrying capacity. That makes people for example want to get to Europe, or the United States, moving north in latitude. The given proximal cause for leaving might be war or lack of jobs, but an underlying contributing factor is the disruptions produced by crop failures or natural disasters.
So someone decides they're going to be sanguine about dramatic changes in our climate that push it outside of the envelope that has sustained civilization, I guess on the logic that if we're all doomed, then hey it was a good ride. But at the same time I hear the talk about how bad it is if the wrong people get over the border or a dead person is still listed on the voter rolls. To me it's a little like having your basement be on fire, smelling the smoke coming up from it, but ignoring it because the front door dead bolt doesn't lock.
Anyways, "Happy Holidays", bud.
People talking about geologic time scales for climate change is silly for the simple reason that we don't live on geologic timescales. Our civilization arose in the blink of an eye, geologically speaking, in a climate that has been very stable. Plants domesticated thousands of years ago are still viable because the growing seasons hardly changed. Now we've dug deep and pulled carbon out of the ground and put it in the atmosphere, such that the atmospheric CO2 levels are 160% of their mean value for the last few thousand years, during the time that we stopped being exclusively dependent on hunting & gathering and started growing our own food. Carbon that was in the ground is now carbon in the atmosphere. And the science of how CO2 traps radiated infrared is long known. So sunlight hits the ground, re-radiates in the IR spectrum but instead of escaping to space it heats the atmosphere that little bit more. CO2 also gets absorbed in the oceans and affects pH levels and such.
So we're pushing the climate very quickly away from a steady state point to which our civilization has adapted. The lower latitudes have been affected by that, and it disrupts the cycles of life in less developed areas that are closer to carrying capacity. That makes people for example want to get to Europe, or the United States, moving north in latitude. The given proximal cause for leaving might be war or lack of jobs, but an underlying contributing factor is the disruptions produced by crop failures or natural disasters.
So someone decides they're going to be sanguine about dramatic changes in our climate that push it outside of the envelope that has sustained civilization, I guess on the logic that if we're all doomed, then hey it was a good ride. But at the same time I hear the talk about how bad it is if the wrong people get over the border or a dead person is still listed on the voter rolls. To me it's a little like having your basement be on fire, smelling the smoke coming up from it, but ignoring it because the front door dead bolt doesn't lock.
Anyways, "Happy Holidays", bud.

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