Archives par mot-clé : Natural CO2

climate-debate

New Study Thoroughly Disassembles The CO2-Drives-Climate Assumption In One Fell Swoop

by K. Richard, Aug 15, 2025 in NoTricksZone 

Not only does CO2 have no discernible effect on climate, but any alleged anthropogenic role within the hypothetical greenhouse effect is not detectable either.

In recent decades there has been a concerted effort to assert it is “settled” science to characterize variability in the atmospheric CO2 concentration – assumed to be modulated by human activity – as the predominant factor in both climate change and the so-called greenhouse effect.

Science, however, is never truly settled.

A new Frontiers study succinctly unsettles this prevailing paradigm with surgeon-like precision. In under 20 pages the authors deliver a cogent critique of the CO2-drives-climate presumption. A few of the key points include:

• CO2 only contributes about 4-5% to the greenhouse effect, whereas water vapor and clouds contribute 95%.

• Of that 4-5% greenhouse effect contribution from CO2, just 4% of that can be attributed to human activities (i.e., fossil fuel emissions). Thus, about 96% of the 4% contribution from CO2 can be attributed to natural processes.

“WV [water vapor] and clouds (for which WV is responsible) dominate the ARE [atmospheric radiative effect], while CO2 contributes only 4-5% to it. Also, anthropogenic CO2 emissions are only 4% of the total, with the vast majority (96%) being natural. Additionally, evidence suggests that changes in temperature precede those in CO2 concentration, thus challenging the assumption that CO2 drives temperature.”

• As Fig. 10 in the study indicates, observed changes in the atmospheric CO2 concentration cannot be demonstrated to have exerted any effect in altering longwave radiation measurements, much less the surface temperature. A hypothetical doubling the CO2 concentration [NC-RAGs, or non-condensing radiatively active gases] “results in a temperature increase of zero”.

“[W]hile the role of CO2 in photosynthesis is important in biochemical terms, it becomes negligible in terms of its contribution to the surface energy balance.”

“[T]he observed increase of the atmospheric CO2 [from 300 ppm to 420 ppm] has not altered the ARE [atmospheric radiative effect or greenhouse effect] in any discernible way.”

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climate-debate

New Study Finds The Anthropogenic ‘Pressure’ On Climate Is Too Small To Play A ‘Dominant Role’

by K. Richard, Apr 14, 2025 in NoTricksZone

Even if the entirety of the modern CO2 concentration increase is due to human activity, the impact (pressure) on global temperatures amounts to no more than 15-18%.

In a new study, geology professor Dr. Wojciech Stankowski  has summarized some of the reasons why the prevailing narrative that says humans can drive climate change by burning more or less fossil fuels cannot be supported by the evidence.

Past natural climate changes such as Greenland’s “temperature increases of up to 10°C within just 50 years” 14,700 and 11,700 years ago confirm that the modern climate change rate (just o.05°C per decade since 1860) falls well within the range of natural variability.

Further, a CO2 concentration change from 0.03% to 0.04% (300 ppm to 400 ppm) is not significant enough to impact temperature change in the global ocean, which covers 71% of the Earth’s surface.

“If carbon dioxide were the main driver of temperature fluctuations, its concentration variations would have to be enormous.”

“Currently, CO2 levels are around ~400 ppm. If this entire difference [the ~100 ppm CO2 increase since the early 20th century] is attributed to human activity, anthropogenic pressure accounts for no more than 15-18%.”

Natural factors such as tectonics, changes in galactic phenomena, and the Sun’s magnetic fluctuations continue to modulate changes in climate. Human activity can only play a non-dominant modifying role at most.

“The overall trends in climate change rhythms will continue to be determined by the complex nature of galactic phenomena, the energy-magnetic fluctuations of the Sun, and their interactions with Earth’s magnetic field.”

“The ever-increasing intensity of anthropo-pressure does not hold a dominant role in climate change.”

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