Limiting Global: How CO2?

Warming and Climate Change: causes, consequences, analysis ... Debate on CO2 and other greenhouse gas.
izentrop
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Re: Limit the warming: how many CO2?




by izentrop » 26/12/20, 12:39

ABC2019 wrote:For the moment, all nuclear power from the start has "saved" around twenty Gt of C maximum: not only is it nothing, around 4 ppm
Compared to ? It would be good if you put a link of what you put forward in an extraordinary way : Wink:
And you forget that we are moving towards mainly electrical energy.

For those who find it difficult to sort things out, we can recall what is written in this excellent document (do not stop at the political side of the site) https://lepcf.fr/Creation-de-l-associat ... Climat-PNC
PS: We can underline the courage of the politicians who dare to oppose the single thought.
Fessenheim reactor 1 was shut down in February 2020 and reactor 2 on June 30. The two reactors together produced around 12 TWh (terawatt-hours) per year, which provides an annual income of 500 million euros. Such income would correspond to that of a portfolio of 9 billion euros (on the basis of a reactor life of 40 years and a discount rate of 4,5%).

The Center Nucléaire de Production d'Electricité (CNPE) is the main provider of jobs and funding for the Fessenheim region. The abandonment of this heritage has not been justified. Moreover, the virtually carbon-free electric current (12 grams of CO2 / kWh) produced by the two reactors will be replaced by that imported from Germany, mainly produced by coal-fired power stations (1000 gCO2 / kWh).
While the two reactors at Fessenheim are shut down, a 1100 MW coal-fired power station is commissioned on the other side of the Rhine, Datteln. Ultimately the shutdown of the Fessenheim plant will result in the emission of 13 million tonnes of additional CO2 each year.
Including the 58 reactors in service previously, that was almost 40 Gt of CO2 equivalent saved per year, which largely contradicts your assertion. : roll:

And for those who point to the risks as a final argument
A comparative study of the risks associated with the production of electricity was carried out by the European Union. Its main results, summarized by the journal Forbes, have a few surprises in store:
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ABC2019
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Re: Limit the warming: how many CO2?




by ABC2019 » 26/12/20, 12:50

izentrop wrote:
ABC2019 wrote:For the moment, all nuclear power from the start has "saved" around twenty Gt of C maximum: not only is it nothing, around 4 ppm
Compared to ? It would be good if you put a link of what you put forward in an extraordinary way : Wink:

compared to what we would have produced if we had produced the same electricity with a mix of fossils. There is nothing extraordinary, except the fact that people do not even bother to make rules of 3. Nuclear produces less than 5% of the world energy which produces at a little more than 2 ppm per year of CO2 therefore saves about 0,1 ppm / year, and it has been deployed for about 40 years.
And you forget that we are moving towards mainly electrical energy.


in the virtual universes of prospective reports, perhaps.
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Re: Limit the warming: how many CO2?




by Obamot » 26/12/20, 12:59

We need a “Marshall plan” of energy, and start with a fundamental reflection: why do we consume so much?

izentrop wrote:For those who find it difficult to sort things out
What you call “part of things”Is it never to have a pro-nuclear oriented discourse?

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moinsdewatt
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Re: Limit the warming: how many CO2?




by moinsdewatt » 02/03/21, 08:58

CO2 emissions from energy have already rebounded strongly

AFP published on March 02, 2021

After a historic decline last year due to the Covid-19 pandemic, CO2 emissions from the energy sector have already rebounded sharply, warns the International Energy Agency (IEA) on Tuesday.

"After hitting a low point in April, global emissions rebounded strongly and rose above their 2019 level in December," underlines the IEA.

Emissions from the energy sector were thus 2% - or 60 million tonnes - last December above their level in December 2019.

"The rebound in CO2 emissions around the world at the end of last year is a serious warning that we have not done enough to accelerate the transition to clean energy across the world," the director warned. IEA Executive, Fatih Birol.

"If the economic rebound expected this year is confirmed - and in the absence of major political change among the largest economies on the planet - then global emissions will probably increase in 2021", he stressed.

Energy emissions overall fell 5,8% last year, or almost 2 billion tonnes of CO2, the largest drop in human history, according to the latest figures from the 'IEA contained in a special report.

The IEA had previously mentioned an even steeper drop, of around 7%.

Most of the decline was caused by reduced use of oil for road transport and aviation.

"With the resumption of travel and economic activities, oil consumption and its associated emissions are on the rise," says the IEA.

The overall figure for 2020 also masks a strong disparity between countries: China's emissions increased by 0,8% in 2020 with a rapid recovery in activity, while they fell by 10% in the United States. .


https://www.connaissancedesenergies.org ... ent-210302
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moinsdewatt
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Re: Limit the warming: how many CO2?




by moinsdewatt » 02/03/21, 09:02

CO2 at Mauna Loa available from February 2021:
source: http://www.esrl.noaa.gov/gmd/webdata/cc ... nd_mlo.pdf

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ABC2019
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Re: Limit the warming: how many CO2?




by ABC2019 » 02/03/21, 10:12

moinsdewatt wrote:CO2 at Mauna Loa available from February 2021:
source: http://www.esrl.noaa.gov/gmd/webdata/cc ... nd_mlo.pdf

Image

it's always the same curve every year, just shift the horizontal and vertical scale by one notch : Lol:
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Re: Limit the warming: how many CO2?




by Obamot » 02/03/21, 15:06

The red curve is the precessions and the troughs are the ice ages, am I right? Image
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moinsdewatt
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Re: Limit the warming: how many CO2?




by moinsdewatt » 20/04/21, 23:33

Energy-related CO2 emissions set off for a major rebound in 2021

AFP • 20 / 04 / 2021

Greenhouse gas emissions linked to energy production and consumption are expected to rebound to the point of approaching their pre-Covid-2021 peak in 19, due to the recovery in global demand for all fuels fossils and in particular the resurgence of coal, estimates the International Energy Agency (IEA).

After a historic decline of 5,8% in 2020 linked to the pandemic and its containment measures, energy-related emissions (or around three quarters of the world total all sectors combined) should experience a rebound of 4,8 this year, 1,5% (+33 billion tonnes, to XNUMX billion tonnes).

This would be the second highest annual increase on record for these emissions causing global warming, after the post-financial crisis rebound in 2.

Indeed, all fossil fuels should see their demand increase "significantly" in 2021, and notably coal, the most emitting of all, in emerging countries.

Demand for coal is expected to grow 4,5%, surpassing its 2019 level to approach its 2014 highs. Its growth, driven by the electricity sector, is expected to be 60% greater than that of renewables (which are also growing) .

Gas demand is also expected to exceed its 2019 level. Oil demand is picking up sharply, but is unlikely to return to its 2019 peak due to uncertainties weighing on the airline sector.

On the renewable side, electricity production is expected to grow by 8%, to supply some 30% of global electricity (compared to less than 27% in 2019).

Solar and wind power in particular should experience record annual growth: electricity production from wind power is expected to grow by 17% compared to 2020, that from photovoltaic sources by nearly 18%. China accounts for about half of this progress.

But in the end, global energy-related emissions in 2021 would end up just 1,2% below the 2019 level (at 400 million tonnes less).

"This is a grim warning, which shows that the economic recovery after the Covid crisis is to date anything but sustainable for our climate," said IEA director Fatih Birol in a statement.

"Unless governments act quickly to start cutting emissions, we are likely to face an even worse situation in 2022," warns the economist, for whom "the climate summit hosted by US President Joe Biden this week is a critical time to commit to clear and immediate action ahead of COP26 in Glasgow. "


https://www.boursorama.com/actualite-ec ... 92964a1ad7
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ABC2019
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Re: Limit the warming: how many CO2?




by ABC2019 » 21/04/21, 17:34

moinsdewatt wrote:
Energy-related CO2 emissions set off for a major rebound in 2021

roh well then, would the world after look like the world before? but who could have imagined that? : Shock:
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Re: Limit the warming: how many CO2?




by moinsdewatt » 13/05/21, 11:16

CO2 at Mauna Loa available in May 2021:
source: http://www.esrl.noaa.gov/gmd/webdata/cc ... nd_mlo.pdf

419ppm CO2

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