CO2 ppm, sun and climate variability

[pacian-]

Milankovitch gave the first explanation of glacial cycles. The climatic change, of the orbital cycles of Milankovitch, is progressive, that cannot explain this stall which one does not find in the former interglaciations!
The interaction between the sun/internal cycles/planets/meteors/galaxy causes a series of solar cycles and accidents that are difficult to perceive in hindsight.
An other idea !

http://la.climatologie.free.fr/soleil/soleil3.htm#changement

[Woof woof]

Hello,

Some basic figures on the climate and elementary deductions, unpretentious, far from the affirmative of the IPCC.

Try with the following data:

1) Greenhouse effect of the planet +33°C

Water vapor contribution 60%
Contribution CO2 20% not 25%
Methane contribution 16%
Ozone Contribution 3%

2) CO2 concentration has a logarithmic effect of on temperature rise.
This means that each increase in CO2 concentration has less and less significant impact on the overall temperature of the planet, and higher concentrations of CO2 are required to achieve the same effect on temperature as lower concentrations. Linear extrapolations do not work.

3) The temperature of the oceans can take decades to warm up or cool down, there is an inertial effect on global temperature. Simplistic extrapolations from a given moment do not work, it would be necessary to know the law of temporal evolution.

[pacian-]

I'm talking about the post-Wurm Ice Age (10 BC).
After research, the stall of the warming was caused by a meteorite! This probably permanently disturbed the ocean currents, as well as the lithosphere, which would explain the posterior volcanism and the lasting pause in warming!
https://www.laterredufutur.com/accueil/un-cratere-dimpact-geant-decouvert-au-groenland/

If the causes of this pause are identified, have we reached the end of the consequences of the fall of this meteorite and therefore the resumption of global warming?

[izentrop]

After research, the stall of the warming was caused by a meteorite!

The theory doesn't hold...

The extinction of Pleistocene megafauna in America and Eurasia actually occurred over a relatively long period, spanning several millennia and straddling the Late Pleistocene and Holocene. The Clovis culture of North America would not have died out but would have fragmented into different regional cultures over subsequent periods. A possible cosmic impact, if confirmed, could have had lesser consequences than what is envisaged in the present theory.

https://fr.wikipedia.org/wiki/Hypoth%C3 ... %C3%A9cent

[pacian-]

The theory doesn't hold...

There's no more conditional, we found the impact crater, 31km.
And if we look at the list of volcanism, there is an increase in eruptions since the impact (12a) which has prevented the rapid resumption of global warming.
https://forums.infoclimat.fr/f/topic/35501-volcanisme-et-climat/
A large meteorite causes tectonic destabilization which can cause increased volcanism (cooling) over millennia.
https://science-et-vie-junior.fr/article-magazine/mort-dinos-volcans-etaient-coup-18110.html
Lately, it is the sun that has cooled the Earth.
https://blogs.mediapart.fr/mfdjfc/blog/050520/le-rechauffement-climatique-du-plomb-dans-laile

[izentrop]

The claims of a blogger and a forumAnonymous eur are no match for specialists in the matter https://www.pnas.org/doi/10.1073/pnas.2007869117

[pacian-]

Using the fine chronology to affirm that it was the egg that made the hen 12000 years ago, great uncertainty. The conclusion does not give a better explanation than the meteorite (unrecognized crater in this study). The impact is not incompatible with a previous modification of the equator currents before the meteorite disrupts the AMOC and then the rest, not easy to confirm!
It reminds me that for a long time science claimed that there were no humans before 15000a in America, despite discoveries on 50a that found more than 22000a by stratigraphy. It took C14 and footprints for science to belatedly validate earlier findings.
Summarizing articles does not prevent reasoning, indefinitely the conclusion.

[Woof woof]

Still many questions about this crater:

Until now, it has not been possible to date this crater precisely, but theories have already been put forward. "Its condition strongly suggests that it formed between the time the ice cap covered Greenland, less than 3 million years ago, and the end of the last ice age", 12 years ago. years, explains Kurt Kjaer, curator of the Natural History Museum of Denmark. “Given its diameter, the central peak of such a crater should measure several hundred meters. However, the radar measurements show us a peak 000 m high. If it is indeed a crater, the peak has been heavily eroded. adds Ludovic Ferrière. This crater is therefore not recent: ice movements tend, over time, to erode the bedrock it covers.

https://www.nationalgeographic.fr/scien ... -groenland

[pacian-]

NASA discovered a second impact nearby that is not of volcanic origin, is less than 80a and is much more eroded, greatly reducing the age of the first crater.
https://www.laterredufutur.com/accueil/la-nasa-decouvre-un-deuxieme-cratere-geant-sous-la-glace-du-groenland/

The reduced central peak could be explained by the hundreds of meters of ice which dispersed a good part of the energy before the ground.
From the second impact, the Dryas period (12a) becomes probable for the first discovery. Not sure yet but a high probability. And if not that impact, there were others simultaneously.
https://www.laterredufutur.com/accueil/il-y-a-pres-de-13-000-ans-un-impact-de-comete-a-cree-des-incendies-planetaires/

The impacts probably increased the number of eruptions which delayed the resumption of global warming! It's almost CQFD, at my level.
https://www.lanouvellerepublique.fr/france-monde/extinction-des-dinosaures-volcans-ou-meteorite-sans-doute-un-peu-des-deux

[Obamot]

I'm talking about the post-Wurm Ice Age (10 BC).
After research, the stall of the warming was caused by a meteorite! This probably permanently disturbed the ocean currents, as well as the lithosphere, which would explain the posterior volcanism and the lasting pause in warming!
https://www.laterredufutur.com/accueil/un-cratere-dimpact-geant-decouvert-au-groenland/

If the causes of this pause are identified, have we reached the end of the consequences of the fall of this meteorite and therefore the resumption of global warming?

[Hypothesis therefore tweezers] if so, then should we take into account climatic interactions relating to the Milankovitch cycle?