0) Introduction: Climate Change is a major topic of concern, and the general consensus of many people is that it is being caused by Carbon Dioxide releases that commenced with the start of the industrial revolution. However, even though carbon dioxide amounts in the atmosphere have been slowly increasing for centuries, the current global warming only commenced about 40 years ago. Further, carbon dioxide is an exceptionally weak green-house gas compared to other gases being released by society, and as shown below, cannot be the cause of global warming. 1) The world is still within the global temperature fluctuations of the Holocene during the past 10,000 years, as per this chart: https://upload.wikimedia.org/wikipedia/commons/c/ca/Holocene_Temperature_Variations.png 2) The inset of the above graph (‘Recent Proxies’) shows the past few decades, however, rising to above the norm (0.5 C rise). 3) The temperature record for the past 2,000 years shows this more clearly, rising in the past few decades by 0.5 C: https://en.wikipedia.org/wiki/Tempe...dia/File:2000_Year_Temperature_Comparison.png 4) The past few decades are shown in greater detail in this graph, covering 1975 to 2010. Interestingly, there is a steady rise in temperature from the average global variation (0.0 C) from 1975 (-0.2 C below average) to 1998 (0.6 C above average; surface measurements). From 1998 to 2010, there is a decrease (from 0.6 C to 0.2 C), where it then goes up again (not shown on this graph) from 2010 to 2019 to about 0.7 C. https://en.wikipedia.org/wiki/Global_temperature_record#/media/File:Satellite_Temperatures.png 5) During those same time frames, China (and the world) were releasing F-gas [Fluoro-Choloro Carbon gas compounds such as refrigerants (Freon) and gasses from foam production]. This was done by the world beginning after WWII in the 1950s, growing steadily in usage year by year, and the ozone layer was being effected. Consequently, these releases were banned by international Treaty in 1997, and the “ozone hole” began diminishing towards pre-F-gas levels. Beginning circa 2010, China began surreptitiously releasing large amounts of F-gas in violation of international treaty. https://www.devdiscourse.com/articl...-violates-international-treaty-say-scientists 6) Of all the ‘greenhouse’ gases, CO2 (carbon dioxide) is the least effective (GWP), and the F-gasses are the most effective at warming the earth, as per the below chart. Carbon dioxide is assigned a warming potential (GWP) of 1, and the other gas releases all have much higher potentials, particularly the F-gasses: “The use of CFC-12 (except some essential uses) has been phased out due to its ozone depleting properties. The phasing-out of less active HCFC-compounds will be completed in 2030. “” https://en.wikipedia.org/wiki/Greenhouse_gas (note; this commentary was written before it was learned that China began again releasing F-gasses on the sly) 7) The total amount of greenhouse gas release since 2010 is roughly 2% for F-gasses and 65% for CO2 (fossil), i.e. only about 1/30th the amount of CO2. However, the relative warming effect for F-gasses is about 10,000-fold greater. This 2% apparently does not include the surreptitious releases by China. The pie chart, shown below, shows the following current releases to the atmosphere: Carbon-dioxide (fossil fuel releases) 65% Carbon-dioxide (non-fossil releases) 11% Methane 16% Nitrous Oxide 6% F-gasses 2% https://www.epa.gov/ghgemissions/global-greenhouse-gas-emissions-data 8) This conclusion that global warming is caused almost exclusively by F-gas releases is not only readily apparent from the very low global-warming potential of carbon-dioxide (1) compared to F-gas (circa 10,000), it has been independently concluded by way of research from the University of Waterloo, published in 2013 in the International Journal of Modern Physics B: “Conventional thinking says that the emission of human-made non-CFC gases such as carbon dioxide has mainly contributed to global warming. But we have observed data going back to the Industrial Revolution that convincingly shows that conventional understanding is wrong," said Qing-Bin Lu, a professor of physics and astronomy, biology and chemistry in Waterloo's Faculty of Science. "In fact, the data shows that CFCs [F-gasses] conspiring with cosmic rays caused both the polar ozone hole and global warming." https://phys.org/news/2013-05-global-chlorofluorocarbons-carbon-dioxide.html 9) Conclusion: Most of the global warming is caused by F-gasses, by a factor of about 300-fold compared to CO2, even though CO2 is roughly 30-fold greater in amount. China’s surreptitious releases of F-gasses in violation of treaty, commencing circa 2010, accounts for the past decade’s change from the cooling of 1998 to 2010 (as the F-gasses disintegrate into other less-warming substances) to warming (2010 to present). This also accounts for the ozone-hole again growing (or lessening of its decrease), as per the article on China’s surreptitious releases of F-gasses.