It is abundantly clear that recent observations of global average surface temperature increase are the result of complex interactions among a variety of factors influencing natural global climate variation.
The combination of periodic oscillation cycles of solar irradiance, solar magnetic flux, internal heliophysical solar cycles, cosmic ray intensity and solar system precession create regular fluctuations in global climate on all planets in the solar system. The coupled ocean/atmospheric system on Earth further complicates the interactions among these cycles, creating a chaotic complex adaptive system that results in perceived climate variation. (D’Aleo 2011 http://icecap.us/docs/change/OceanMultidecadalCyclesTemps.pdf)
The effect of human produced greenhouse gases on climate variation is minimal, amounting to 0.28% (28/100 of 1 percent) of the total atmospheric “greenhouse effect,” more accurately called radiative forcing. The largest contributor to atmospheric radiative forcing is natural water vapor, at 94.999% of the total greenhouse gases in the atmosphere. (Hieb 2007, http://www.geocraft.com/WVFossils/greenhouse_data.html)
Atmospheric concentration of water vapor is a function of atmospheric circulation driven by solar energy.
"I can only see one element of the climate system capable of generating these fast, global changes, that is, changes in the tropical atmosphere leading to changes in the inventory of the earth's most powerful greenhouse gas-- water vapor." Dr. Wallace Broecker, Lamont-Doherty Earth Observatory, Columbia University, R. A. Daly Lecture, American Geophysical Union, May 1996.
What all this means is that proposed changes in human produced greenhouse gases would result in imperceptible changes in total overall climate variation.
The present world-wide focus on human produced greenhouse gases is a politically and economically motivated propaganda campaign to generate support for World Bank and United Nations “Sustainable Development” programs. The World Bank has produced an internally written document, “Turn Down the Heat,” purportedly, according to the World Bank’s own promotional press release, a “scientific report.”
“The world is barreling down a path to heat up by 4 degrees at the end of the century if the global community fails to act on climate change, triggering a cascade of cataclysmic changes that include extreme heat-waves, declining global food stocks and a sea-level rise affecting hundreds of millions of people, according to a new scientific report released today that was commissioned by the World Bank.” (http://www.worldbank.org/en/news/2012/11/18/new-report-examines-risks-of-degree-hotter-world-by-end-of-century)
However, the report was prepared by the Potsdam Institute for Climate Impact Research, which states as its mission, “PIK addresses crucial scientific questions in the fields of global change, climate impacts and sustainable development,” (http://www.climateanalytics.org/) with help from Climate Analytics, which claims: “Our vision is to devise science-based policy to prevent dangerous climate change, enabling sustainable development.” (http://www.climateanalytics.org/)
Global Warming and climate change alarmism are promoted to the public by a vast interlinked system of global NGOs, “progressive” foundations, public relations firms and web-based advocacy groups. To “follow the money,” go to any web site promoting global warming and click on their “Who We Are,” “Funding” or “Partners” links. You’ll find yourself quickly immersed in a sea of interconnected links, from foundation to foundation to environmental group to NGO, populated by self-identified experts feeding at the global warming funding trough.
Proponents of human caused climate change claim that “climate skeptics” and “deniers” are a large, well-organized group, massively funded by oil companies, who sow seeds of doubt among the consensus of climate scientists who believe in anthropocentric global warming. (http://www.examiner.com/article/deceit-and-corporate-manipulation-of-the-dialogue-on-climate-change-redux)
The truth is exactly the opposite. The well organized and highly funded effort is the economic and political manipulation and misrepresentation of climate science to further global political and economic agendas.