Thread: [Continuation] Global warming discussion V
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Old 26th January 2018, 06:10 PM   #37
macdoc
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Join Date: Dec 2008
Location: Planet earth on slow boil
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http://www.thenrgroup.net/climatechange/index.htm

not about to shoved back in a bottle anytime soon.
We would need to invert the curve with sequestration over the next 100 years to get even close....ain't gonna happen.



Quote:
Humanity's carbon budget set at one trillion tonnes | New Scientist
https://www.newscientist.com/.../dn1...at-one-trillio...
Apr 29, 2009 - Industrial activity since the mid-18th century means we have already emitted 500 billion tonnes of carbon – half of the 1-trillion-tonne budget. “At some point in the last few years, we released the 500-billionth tonne of carbon,” says Allen. We can afford to dump only 250 billion tonnes more – or perhaps 500 ...
so round figures we have to stop emissions entirely and remove 5 billion tons of C02 per annum

so far ..

Quote:
There are presently 21 large-scale CCS facilities in operation or under construction globally; these facilities can remove 37 million tonnes per annum (Mtpa) of CO2 that otherwise could have entered the atmosphere. This is the equivalent to taking almost eight million passenger vehicles off our roads.
and that's before even stopped the increase....'t'wil be a toasty 21st

this is reality ....

Quote:
Slam on the climate brakes

What would happen to the climate if we were to stop emitting carbon dioxide today, right now? Would we return to the climate of our elders?

The simple answer is no. Once we release the carbon dioxide stored in the fossil fuels we burn, it accumulates in and moves among the atmosphere, the oceans, the land and the plants and animals of the biosphere. The released carbon dioxide will remain in the atmosphere for thousands of years. Only after many millennia will it return to rocks, for example, through the formation of calcium carbonate – limestone – as marine organisms’ shells settle to the bottom of the ocean. But on time spans relevant to humans, once released the carbon dioxide is in our environment essentially forever. It does not go away, unless we, ourselves, remove it.

In order to stop the accumulation of heat, we would have to eliminate not just carbon dioxide emissions, but all greenhouse gases, such as methane and nitrous oxide. We’d also need to reverse deforestation and other land uses that affect the Earth’s energy balance (the difference between incoming energy from the sun and what’s returned to space). We would have to radically change our agriculture. If we did this, it would eliminate additional planetary warming, and limit the rise of air temperature. Such a cessation of warming is not possible.

So if we stop emitting carbon dioxide from burning fossil fuels today, it’s not the end of the story for global warming. There’s a delay in air-temperature increase as the atmosphere catches up with all the heat that the Earth has accumulated. After maybe 40 more years, scientists hypothesize the climate will stabilize at a temperature higher than what was normal for previous generations.

This decades-long lag between cause and effect is due to the long time it takes to heat the ocean’s huge mass. The energy that is held in the Earth by increased carbon dioxide does more than heat the air. It melts ice; it heats the ocean. Compared to air, it’s harder to raise the temperature of water; it takes time – decades. However, once the ocean temperature is elevated, it will release heat back to the air, and be measured as surface heating.
more

https://theconversation.com/if-we-st...e-change-78882

Last edited by macdoc; 26th January 2018 at 06:12 PM.
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