The effect of doubling CO2 from 400 ppm to 800 ppm plus feedbacks is just 0.5°C

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The effect of doubling CO2 from 400 ppm to 800 ppm plus feedbacks is 0.5°C, reports a new study using HITRAN data. This is only 0.04°C more than the warming from doubled CO2 from 200ppm to 400 ppm (0.46°C). New research indicates that carbon dioxide which absorbs energy with a wavelength of 15 μm (micrometers) is virtually saturated between 400ppm and 800ppm.

Excerpt: Climate sensitivity to future increases in CO2 concentration is calculated to be 0.50K, including the positive feedback effects of H2O, while climate sensitivities to CH4 and N2O are almost undetectable at 0.06K and 0.08K respectively. This result strongly suggests that increasing levels of CO2 will not lead to significant changes in earth temperature and that increases in CH4 and N2O will have very little discernable impact...This is an unfortunate situation since world governments are implementing ambitious and expensive plans to limit the increase of global temperatures by reduction of CO2 emissions to atmosphere, and to achieve a net zero carbon economy, in the belief that CO2 emissions are the main driver of global temperature increases...

An increase in average Relative Humidity of 1% will result in a temperature increase of 0.03Kelvin. By comparison, CO2 is a bit player.



https://junkscience.com/2021/09/stud...arming-effect/

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A recent paper on atmospheric saturation of so-called green house gases shows that the temperature rise for any give insolation will reach an asymptotic value as the fixed number of heat photons from the sun are now shared among twice as many CO2 and other molecules reducing the heating of each one.

https://papundits.wordpress.com/2021...ate-emergency/

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This is clearly way too hard for the likes of Nordberg, Moonshi'ite, Set 'em Joe, McSlobber et al to.understand.

[Celticguy]

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This is clearly way too hard for the likes of Nordberg, Moonshi'ite, Set 'em Joe, McSlobber et al to.understand.

Anything beyond "CO2 bad" is over their head.
Thanks for sharing !

[moon]

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This is clearly way too hard for the likes of Nordberg, Moonshi'ite, Set 'em Joe, McSlobber et al to.understand.

It might be , maggot, if anybody bothered to read your crap- but it's been found to be crap so often that your enlightened readership must be in negative figures by now.

Still, tell us again how nobody has been affected by climate change. You're at your best with an extended nose.

Haw, haw.....................................haw.

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It might be , maggot, if anybody bothered to read your crap- but it's been found to be crap so often that your enlightened readership must be in negative figures by now.

Still, tell us again how nobody has been affected by climate change. You're at your best with an extended nose.

Haw, haw.....................................haw.

You seem to relish being a scientific illiterate, unfortunately the Greek chorus behind you are just as bad, if not worse.

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You seem to relish being a scientific illiterate, fortunately the Greek chorus behind you are just as bad, if not worse.

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[BartenderElite]

Still starting these threads?

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Still starting these threads?

Yeh, fuck off ignorant twat.

[moon]

Harvard University to end investment in fossil fuels



BOSTON, Sept 9 (Reuters) - Harvard University is ending its investments in fossil fuels, the school's president said on Thursday, drawing praise from divestment activists who had long pressed the leading university to exit such holdings.

In a letter posted on Harvard's website, President Lawrence Bacow said the school's endowment had no direct investments in fossil fuel exploration or development companies as of June and will not make such investments in the future, "given the need to decarbonize the economy."

The university's indirect investments in the fossil fuel industry "are in runoff mode," he added. The indirect investments, made through private equity funds, make up less than 2% of the endowment, Bacow wrote.

Recently valued at about $42 billion, the most of any university, the school's endowment has been under pressure for years from students, alumni and other activists to sell off its fossil fuel holdings as a way to slow climate change.

https://www.reuters.com/world/us/har...7e0ViX5RLj5TyA

Harvard 1 maggot 0

[BartenderElite]

The debate is over.

Just an FYI.

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The debate is over.

Just an FYI.

Bullshit, stick to mixing cocktails

Slide 7 Is warming dangerous
The next area of disagreement takes us away from science and into the realm of values. How dangerous is global warming? The IPCC 5th Assessment Report used a burning embers diagram to portray reasons for concern. The level of concern increases with the amount of global warming. Note that the IPCC does not use the words ‘dangerous’, ‘crisis’ or ‘catastrophe’ in its report; rather it uses ‘reasons for concern.’
Any evaluation of dangerous climate change must confront the Goldilocks principle. Exactly which climate state is too hot versus too cold? Some answer this question by stating that the climate we’re adapted to is ‘just right’. However, the IPCC uses a preindustrial baseline, in the late 1700’s. Why anyone thinks that this is an ideal climate is beyond me. This was during the Little Ice Age, the coldest period of the millennia. Think George Washington and the horrible winters at Valley forge.
While the categories of concern in the burning embers diagram seem a bit nebulous, the 6th assessment report focused on extreme weather and climate events. Lets take a look.

Slide 8 Extreme events
The recent IPCC report did not detect any global trends in flooding, meteorological or hydrological drought, winter storms or tornadoes. Trends were identified in heat waves, heavy rainfall events and fire weather.
The report concluded that it is likely that the global proportion of major hurricanes has increased over the last four decades. Global hurricane data supports this conclusion. However, there’s a large amount of natural variability in hurricane activity.
The diagram on the left shows the number of major hurricanes that have struck the U.S. since 1900. The year 2005 stands out as the highest, which was followed by a period of 11 years with no major hurricane landfalls. Also, there were a large number of major hurricane landfalls during the first half of the 20th century, when surface temperatures were significantly cooler
The large amount of natural variability makes it difficult to identify meaningful trends, and even more difficult to attribute any trend to manmade global warming.
The right hand side shows US heat waves, which have been the big climate story this past summer. As the global average temperature increases, it makes sense that heat extremes would increase and cold extremes would decrease. However, reality isn’t so simple. This figure from the EPA shows that heat waves in the 1930’s were horrendous and much worse than in recent decades, even though the average global temperature was significantly lower in the 1930’s.
An important issue is the mortality associated with heat events. Numerous studies have found that there are more deaths from cold events than from heat events, by as much as an order of magnitude. The inescapable conclusion is that more warming leads to fewer deaths from temperature extremes. So which would Goldilocks prefer?

Slide 9 Adapting
So far, the world has done a decent job at adapting to weather extremes climate change. The upper left figure shows the change in yield for major crops, with yields for many crops doubling or even quadrupling since 1960.
The figure in the lower left shows losses from global weather disasters as a percent of GDP. The spikes are associated with years that showed large losses from tropical cyclones. Overall for the past 30 years, there has actually been a slight decline in losses.
The diagram in the lower right shows the number of deaths per million people from weather and climate catastrophes. The large numbers
early in the 20th century were mostly associated with tropical cyclone landfalls in south Asia. Over the past century, climate related deaths have dropped 97%.

https://judithcurry.com/2021/09/03/15-minutes/

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Bullshit, stick to mixing cocktails



https://judithcurry.com/2021/09/03/15-minutes/

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The debate is over.

Just an FYI.

Catastrophizing is a cognitive distortion that prompts people to jump to the worst possible conclusion, usually with very limited information or objective reason to despair. When a situation is upsetting, but not necessarily catastrophic, they still feel like they are in the midst of a crisis.

https://www.psychologytoday.com/us/b...atastrophizing