Are there any stabilizing forces we know about? I only ever hear about these types of positive feedback loops, and it scares the hell out of me.
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, oysters, etc combine this carbon with calcium to produce shells.. and when they die, they accumulate on the sea floor eventually turning into rock.
Unfortunately, the fact that co2 in the atmosphere is growing indicates we're overwhelming these.. I take zero comfort in the fact that these exists.. it actually makes me nervous because once they reach their maximum, co2 will start growing even more rapidly.. and then it'll be so much worse.
People have long thought the threshold to be around 2 degrees C, but now some are thinking it's more like 1.5. The CO2 level everybody agreed was safe was 350 ppm.
Note that in the near term, the negative feedback of photosynthesis may be overwhelmed by changes in ecosystems: if the climate changes rapidly, whole forests may find themselves in a different biome, ocean circulation patterns may change, more freshwater may enter estuaries, etc. Plants evolve quickly, though, and most of their carbon sequestration is through algae and seaweed with short lifespans.
My concern is, if we stop polluting the environment and the global dimming is stopped, then climate change will get much worse.
Global Dimming might explain why the climate hasn't changed as much as some would expect.
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.
Or Andrew Scheer is completely out of step with 2019.
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.
Here is a 2019 paper on the critical role of clouds in arctic cooling https://www.nature.com/articles/s41598-019-44155-w#Sec7
https://www.carbonbrief.org/tropical-forests-no-longer-carbo...
For example, the news earlier this year about treeplanting, spoke about removing Carbon from the atmosphere. Typically, the GHG's will be rolled up into either CO2e (CO2-equivalent) or just C. In the latter case, you often just have to do some molar math to get the CO2e from C.
No, but when we say "carbon emitter", we're talking about methane and other alkanes... and CO2.
CH4 is itself a greenhouse gas that is more potent than CO2 in the short term... and then it decays to water vapor and CO2 in reactions with radicals in the upper atmosphere.
So, it's overall somewhat worse than CO2 in the short term (since it's not just CO2), and equivalent in the long term?
There is definitely a concern about multiple feedback loops involving methane from clathrates, permafrost and also wetlands. There's also considerable uncertainty about the origin of methane emissions. But as far as I can tell the methane "bomb" theory shouldn't be our major concern.
[1] http://www.realclimate.org/index.php/archives/2013/11/arctic...
"... the research didn't measure methane, a greenhouse gas about 30 times more potent than carbon dioxide that is also released from soil."