There have been several in this forum stating it is a simple matter of physics; atmospheric CO2 levels go up and temperatures follow in a linear fashion. We are told current day temperatures are “unprecedented”, yet there is no evidence to support this claim; quite the contrary, direct evidence indicates present day temperatures are still much less than previous times, and well within natural variation.
According to IPCC, it has a high level of scientific understanding of CO2, therefore it should be very simple to provide evidence supporting the hypothesis of IPCC's conclusions that CO2 levels alone will determine global temperatures, particularly since CH4 (methane) levels have flattened for some unexplained reason, again contrary to IPCC climate models. Recent cooling of the oceans is referred to as a “speed bump” by AGW proponents.
A paper supporting that notion may for example have the inverse of the title of the following published paper "
Falsification Of The Atmospheric CO2 Greenhouse Effects Within The Frame Of Physics"
http://arxiv.org/abs/0707.1161
http://arxiv.org/PS_cache/arxiv/pdf/0707/0707.1161v2.pdf
It would also refute this:
http://folk.uio.no/tomvs/esef/ESEF3VO2.htm
In the IPCC 1992 report, climate model simulations of the "global climate" predicted a global temperature rise of about 0.27 - 0.82K per decade.
In the IPCC 1995 report, climate model simulations of the "global climate" predicted a global temperature rise of about 0.08 -0.33K per decade. Adjustments in the models were made until it matched what they believe to be current day temperatures, then the AGW sheep claim the climate models were accurate. Any explanation for this?
It can be easily proven IPCC chooses to ignore relevant research contrary to their agenda driven dogma. Do you challenge this?
In the following IPCC SPM document, a chart on page 4, ‘Radiative Forcing Components’ gives RF values for various climate mechanisms. Do you notice something odd? Maybe a few items missing? Note the LOSU for solar is Low (compared to 2001, 2007 SPM eliminated all references of Very Low), yet IPCC attributes a very low forcing value. Since CO2 is listed as High with the largest forcing value, you should be able to easily locate the relevant physics explaining how IPCC arrives at its 2.4C minimum temperature increase.
http://ipcc-wg1.ucar.edu/wg1/Report/AR4WG1_Pub_SPM-v2.pdf
It would need to be contrary to the above references concerning CO2 in addition to below which attributes a maximum 1.1C increase total to anthropogenic contributions, hardly catastrophic.
http://www.ecd.bnl.gov/steve/pubs/HeatCapacity.pdf
This subject matter is focused on CO2 as it is the main villain in AGW. When your side can satisfactorily support that IPCC hypothesis, we can move on to other issues.