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* The second IPCC report (1995) states that “data prior to 1400 are too sparse to allow the reliable estimation of global mean temperature” and shows a graph of proxy-derived temperatures for Earth’s Northern Hemisphere from 1400 onward with different details but a similar overall trend to the first report.[90] * The third IPCC report (2001) states that the latest proxy studies indicate “the conventional terms of ‘Little Ice Age’ and ‘Medieval Warm Period’ appear to have limited utility in describing …

The paper notes that this occurred during a period in which human population increased by 37%, the level of atmospheric CO2 increased by 9%, and the Earth “had two of the warmest decades in the instrumental record.”[230] [231] attributes this increased productivity to “higher temperatures, longer temperate growing seasons, more rainfall in some previously water-limited areas,” and more sunlight.He informed the * In 2013, “Forecast the Facts”—a “grassroots human rights organization dedicated to ensuring that Americans hear the truth about climate change”—published the following graphic purporting to show a recent photo of the North Pole: * After publishing an article documenting the facts above, Just Facts contacted Forecast the Facts to offer an opportunity to respond.[191] As of January 2016, Forecast the Facts has not replied or issued a correction.[192] [193] * The natural variability of Earth’s climate is such that a glacier formerly existed on Hawaii,[196] and glaciers once covered almost all of Canada, New England, and the northern central United States: * In addition to carbon dioxide emissions from the use of fossil fuels, other factors that have been implicated by scientists as primary causes of modern climate change include but are not limited to: * A central debate among scientists about man-made greenhouse gases involves how much natural processes reduce or amplify the effects of these gases.Positive feedbacks amplify the effects, and negative feedbacks diminish them.[209] * The climate models included in the 2007 IPCC report are programmed with positive feedbacks for water vapor that more than double the warming effect of CO2.[210] This is based upon the fact that warmer air evaporates more water, thus creating more water vapor, which is a greenhouse gas.[211] [212] states that the feedbacks used in climate models are based upon “methods that …The materials were authored by some of the world’s leading climate scientists and accompanied by the following note: We feel that climate science is too important to be kept under wraps.We hereby release a random selection of correspondence, code, and documents.

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