The reality of climate change, yes, the climate always changes

[Old Rocks]

However, a fact that the confused AGW scammer always seem to forget is a time when CO2 levels were ten times what they are now the earth was a snowball

Those not ignorant of the basics know the last snowball earth phase happened over 500 million years ago, when the sun was over 5% dimmer. Very dishonest to leave that out.

Also, the thing that broke the earth out of the snowball earth phase was ... increasing CO2. Again, it's not possible to explain paeloclimate without including the effects of CO2.

Why do you all think CO2 no longer has the effect that it had over all of earth's past? That makes you all sound some combination of stupid, delusional and dishonest.

If CO2 is such a greenhouse gas that you idiot Moon Bat scammers claim it is with levels ten times what it is now we should have turned into a hothouse like Venus did. Instead we were a snowball.

Another AWG scam busted!

Wrong!

The initiation of modern soft and hard Snowball Earth climates in CCSM4​

J. Yang*,1, W. R. Peltier2, and Y. Hu1

• 1Laboratory for Climate and Ocean-Atmosphere Studies, Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China
• 2Department of Physics, University of Toronto, Toronto, Ontario, Canada
• *formerly at: Department of Physics, University of Toronto, Toronto, Ontario, Canada

Received: 11 Nov 2011 – Discussion started: 02 Jan 2012 – Revised: 02 May 2012 – Accepted: 02 May 2012 – Published: 16 May 2012
Abstract. Geochemical and geological evidence has suggested that several global-scale glaciation events occurred during the Neoproterozoic Era in the interval from 750–580 million years ago. The initiation of these glaciations is thought to have been a consequence of the combined influence of a low level of atmospheric carbon dioxide concentration and an approximately 6% weakening of solar luminosity. The latest version of the Community Climate System Model (CCSM4) is employed herein to explore the detailed combination of forcings required to trigger such extreme glaciation conditions under present-day circumstances of geography and topography. It is found that runaway glaciation occurs in the model under the following conditions: (1) an 8–9% reduction in solar radiation with 286 ppmv CO2 or (2) a 6% reduction in solar radiation with 70–100 ppmv CO2. These thresholds are moderately different from those found to be characteristic of the previously employd CCSM3 model reported recently in Yang et al. (2012a,b), for which the respective critical points corresponded to a 10–10.5% reduction in solar radiation with 286 ppmv CO2 or a 6% reduction in solar radiation with 17.5–20 ppmv CO2. The most important reason for these differences is that the sea ice/snow albedo parameterization employed in CCSM4 is believed to be more realistic than that in CCSM3. Differences in cloud radiative forcings and ocean and atmosphere heat transports also influence the bifurcation points. These results are potentially very important, as they are to serve as control on further calculations which will be devoted to an investigation of the impact of continental configuration.

We demonstrate that there exist ''soft Snowball'' Earth states, in which the fractional sea ice coverage reaches approximately 60–65%, land masses in low latitudes are covered by perennial snow, and runaway glaciation does not develop. This is consistent with our previous results based upon CCSM3. Although our results cannot exclude the possibility of a ''hard Snowball'' solution, it is suggested that a ''soft Snowball'' solution for the Neoproterozoic remains entirely plausible.

 

[Old Rocks]

The atmosphere of earth is subject to many influences. Conservatives breath is one of the most contaminating.

What's worse is liberal farts

Farts only smell bad, cons breath is a constant application of damage.

So you failed science, what else is new?

Sorry but I passed with a 3.5 GPA

The only evidence that we have for anonymous posters intellect and education is from what they post. Hmmmmm...............

 

[CrusaderFrank]

The atmosphere of earth is subject to many influences. Conservatives breath is one of the most contaminating.

Who ever said the Warmers were a Cult of homicidal psychopaths?

 

[CrusaderFrank]

As usual, the deniers are doing their mass-trolling and mass-deflection thing. It's a given that none of them looked at the video. Their cult orders them to shun any sources from outside of the cult. I'll summarize, since they're all too lazy.

Many things affect climate, especially CO2. When there's little CO2, earth has ice caps. When there's a lot, earth has no ice caps.

56 million years ago, nature, through volcanoes, put out a lot of CO2 over a span of 20,000-50,000 years, about the same amount of CO2 as humans are putting out in a very short time. The climate warmed strongly, the oceans acidified, and there was a mass extinction event.

As the Milankovitch cycles happen, the amount of sun striking the earth doesn't change. It just falls more on the poles instead of the equator. Yet the whole earth warms as sunlight remains constant, meaning the changing sunlight isn't causing the warming. What is? Changing currents cause the oceans to release a little CO2, and then the CO2 takes over as what causes the warming.

The point, refinforced over and over, is that global climate change always happens, and on a global scale, it's always driven by CO2. There is no way to explain the climate of the past without accounting for CO2.

We're now pumping out CO2 much faster than nature ever did. That means we are changing climate very quickly. Saying otherwise is delusional and contrary to the observed physics and observed reality.

Also, mass extinctions are _bad_, hence we should try to avoid them.

Deniers, if you need that dumbed down more, you're out of luck. Reality feels no obligation to dumb itself down to a level where cult imbeciles can grasp it.

Will you chain yourself to the Chinese Embassy to protest their CO2 output?

 

[skookerasbil]

IDK..........for me, I'll embrace being "uneducated" and "lacking intellect" as long as I am winning. Ive been in this ENVIRONMENT forum for 12 years now and have never seen a losing day even once. Because during all the time, nobody is caring about the "science" except on a few internet message boards. The voters dont give a sh*t about climate change.........

When renewable energy is producing 25% of US electricity, give me a nudge.........otherwise

LOL.......by that time, I'll be sleeping...........like permanently!For a long, long time!

 

[Flash]

If these AGW scammers had any real evidence we wouldn't catch them fabricating data all the time, would we?

 

[ding]

So you deniers think that "the climate always changes" is a good debating point?

I think an icehouse world configuration where the threshold for extensive continental glaciation is different at each pole leads to increase climate fluctuations with greater temperature swings of greater magnitude and is driven by the pole with the "higher" threshold for glaciation. In this case the northern hemisphere.

 

[itfitzme]

What about all those abrupt changes in climate before humans even walked the planet?

Effin idiot.

Wow, you are so smart.

 

[itfitzme]

If these AGW scammers had any real evidence we wouldn't catch them fabricating data all the time, would we?

Well, that's one way to be in denial.

 

[Darkwind]

What about all those abrupt changes in climate before humans even walked the planet?

Effin idiot.

Wow, you are so smart.

Don't be so intimidated. I'm sure that if you apply often, the church of climate change will take you as a plebe.