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50 Articles

Testing an astronomically based harmonic climate model vs the IPCC.

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A paper by Nicola Scafetta compares the performance of a recently-proposed empirical climate model based on astronomical harmonics against general circulation models used by the IPCC. According to the paper's abstract, "... the GCMs fail to reproduce the major decadal and multidecadal oscillations found in the global surface temperature record from 1850 to 2011. ...The proposed harmonic model well reconstructs the observed climate oscillations from 1850 to 2011." Dr. Scafetta concludes "Consequently, the IPCC projections for the 21st century cannot be trusted."



Misdiagnosis of Surface Temperature Feedbacks

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Dr. Spencer and Dr. Braswell compared climate model predictions to measurements from satellite data of heat energy loss to space during the 18 months before and after warming events. They found that there is much more energy released to space than climate models predict, suggesting that the climate is much less sensitive to CO2 increases than predicted by IPCC climate models.



The Association of Albedo and OLR with Variations of Precipitation

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The authors analyzed a wide variety of albedo and radiation differences which are associated with rainfall variations on many different space and time scales. The analysis indicates that there will be very little global temperature increase, about 0.3 C for a doubling of CO2, certainly not the 2-5 oC projected by climate models.



Clausius Clapeyron and the Regulation of Global Warming

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Satellite-based observations suggest that the response of global evaporation to Earth's warming is near the Clausius-Clapeyron relationship. However computer models that are the basis for predictions of dangerous anthropogenic global warming have an evaporation response that is only about one-third the Clausius-Clapeyron relationship.



The Missing Hotspot

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Dr. David Evans explains how the IPCC climate model predicted but missing "Hot Spot" proved that the IPCC theory is wrong. Climate models predict that global warming due to CO2 emissions should cause a prominent "hotspot" of enhanced warming at 10 to 12 km altitude over the tropics due to an assumed increase in water vapour. He writes "But the warming pattern observed by radiosondes during the recent global warming contains no trace of any such hotspot."




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