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Climate change has turned permafrost into a carbon emitter

cbc.ca

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Re: Climate change has turned permafrost into a carbon emitter

#71

Post by easymodex »

mlyle wrote: post #67
DennisP wrote: post #10

Earlier quoted context omitted.

Based on geological history, the negative feedbacks seem predominant for small perturbations, but if you push things a little too hard the positive feedbacks take over. It's happened before several times; a little initial heating from orbital variations, which leads to greenhouse gas emissions, which leads to the global average temperature going up several degrees. A good explanation of the evidence for this is in Ja…

(and then obviously negative feedback takes back over, as we don't run away to infinite or zero temperature).

I suppose, but before that happens the environment could get very, very unpleasant for humans (and animals in general).

Re: Climate change has turned permafrost into a carbon emitter

#73

Post by dunstad »

dr_dshiv wrote: post #65
nkingsy wrote: post #58

Earlier quoted context omitted.

Anything that doesn’t impact co2 becomes a permanent crutch.

The climate changes with or without human behaviour. Only 8000 years ago, you could walk from England to Europe! So we need solutions for managing climate stability, not just cleaning up after humans.

Well, if we fail to develop solutions to clean up after ourselves, we won't need to worry about climate stability because we'll all be dead. So that's one way to handle things.

Re: Climate change has turned permafrost into a carbon emitter

#74

Post by baq »

pdonis wrote: post #39
rgbrenner wrote: post #33

Earlier quoted context omitted.

Here are a few: increased temp > increased evaporation > increased cloud coverage which reflects more sunlight increased co2 > increased tree growth increased co2 > increased algae, plankton growth to absorb co2... other marine animals will also feed on these, increasing their mass, and when they die, they'll sink to the bottom, where they'll mostly remain. increased co2 > increased diffusion into seawater.. clams, o…

> increased evaporation > increased cloud coverage which reflects more sunlight Also increased evaporation > increased latent heat transport to upper atmosphere where it can more easily escape to space. According to the numbers in Kiehl & Trenberth's global energy budget, total latent heat transport is about 80 W/m^2, which means a 5 percent increase in it would entirely cancel out the increased radiative forcing fro…

One slight problem is that we know there were turtles and palm trees in the arctic 50My ago.

Re: Climate change has turned permafrost into a carbon emitter

#75

Post by samvher »

NeedMoreTea wrote: post #17
tito wrote: post #11

Tropical forests are also now a carbon emitter: https://www.carbonbrief.org/tropical-forests-no-longer-carbo...

And I read this morning that some expect the Amazon to stop being a rainforest pretty soon, which would hugely accelerate tree loss.

Do you have a source to share on this?

Re: Climate change has turned permafrost into a carbon emitter

#76

Post by sunkenvicar »

Regardless of the truth of this story and the facts surrounding climate change Canadian media is not a credible source of information.

The CBC gets $2 BILLION/yr from the Trudeau Liberal government. All other private news orgs have a hand in a $600 Million/yr pot. For example, the Toronto Star alone receives $5.2 Million/yr from the Canadian federal government.

We can all agree this is a bad system apt to produce favourable results for the Liberals. For example, they won re-election on Monday.

Re: Climate change has turned permafrost into a carbon emitter

#77

Post by hnarn »

samvher wrote: post #75
NeedMoreTea wrote: post #17

Earlier quoted context omitted.

And I read this morning that some expect the Amazon to stop being a rainforest pretty soon, which would hugely accelerate tree loss.

Do you have a source to share on this?

https://www.theguardian.com/environment/2019/oct/23/amazon-r...

Re: Climate change has turned permafrost into a carbon emitter

#78

Post by aaronbrethorst »

sunkenvicar wrote: post #76

Regardless of the truth of this story and the facts surrounding climate change Canadian media is not a credible source of information. The CBC gets $2 BILLION/yr from the Trudeau Liberal government. All other private news orgs have a hand in a $600 Million/yr pot. For example, the Toronto Star alone receives $5.2 Million/yr from the Canadian federal government. We can all agree this is a bad system apt to produce fav…

For example, they won re-election on Monday.

Or Andrew Scheer is completely out of step with 2019.

Re: Climate change has turned permafrost into a carbon emitter

#80

Post by sunkenvicar »

aaronbrethorst wrote: post #78
sunkenvicar wrote: post #76

Regardless of the truth of this story and the facts surrounding climate change Canadian media is not a credible source of information. The CBC gets $2 BILLION/yr from the Trudeau Liberal government. All other private news orgs have a hand in a $600 Million/yr pot. For example, the Toronto Star alone receives $5.2 Million/yr from the Canadian federal government. We can all agree this is a bad system apt to produce fav…

For example, they won re-election on Monday. Or Andrew Scheer is completely out of step with 2019.

I agree that the Conservatives suffered a colossal loss because Andrew Scheer is not leadership material.

Also, there will never be another typical Conservative majority due to mass migration. The Liberals bring 1 million Liberal-voting migrants per year into Canada. The population of which is 35 million. Simple math.

But none of this invalidates my argument that the Canadian media system is broken.

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