September 23, 2022
When did global warming become climate change?
By Guy K. Mitchell, Jr.
On May 15, 2013, "Quantifying the consensus on anthropogenic global warming in the scientific literature" was published in "Environmental Research Letters" by a group who referred to themselves as "citizen scientists." In the "letter" that reported their findings, they made a claim that "97.1% [of scientists surveyed] endorsed the consensus position that humans are causing global warming" (emphasis added). On May 16, 2013, President Barack Obama tweeted, " Ninety-seven percent of scientists agree #climatechange [emphasis added] is real, man-made and dangerous."
It is unclear whether President Obama made an inadvertent error in quoting the report findings or if he purposefully rephrased the conclusion. In his film, An Inconvenient Truth, former Vice President Al Gore refers to "global warming," as do many academic societies, the United Nations Inter-Governmental Panel on Climate Change (IPCC), and other world politicians. Today, however, the term "climate change" is used almost exclusively by the proponents of the global warming hypothesis instead of the term "global warming." Climate change blames severe weather events such as hurricanes, droughts, floods, extreme heat and cold, mudslides, wildfires, and other natural events on man's activities and their impact on the environment.
In its seminal report in 1990, the IPCC predicted that "
nder the IPCC Business-as-Usual (Scenario A) emissions of greenhouse gases ... global mean temperature [emphasis added] will increase by 1°C by 2025." The average increase in the temperature anomaly for the lower troposphere (first 8 km of the Earth's atmosphere) for that period was 0.402°C (about 0.01°C per year), about 40% of the U.N. IPCC prediction and well within the measurement margin of error. Measured increases in the temperature of the land mass and oceans were even less.
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https://www.americanthinker.com/blog/2022/09/when_did_global_warming_become_climate_change.html