Changes

Radiosonde (weather balloon) and satellite data shows that the lower troposphere warmed by 0.44 degrees Celsius between 1979 and 2014. This corresponds to a rate of 1.7 degrees per century. If the AGW theory were correct, the lower troposphere would be warming at a rate of 3.1 degrees per century, according to an average of 102 climate models used by the Intergovernmental Panel on Climate Change (IPCC).<ref>"[https://www.newcriterion.com//cm/images/THE%20CLIMATE%20SURPRISE%20PAMPHLET.pdf The Climate Surprise Pamphet]", ''The New Criterion'', 2016. Taken from chart "All 3 Global Temperature Dataset Types Disagree with the Climate Model During the Period of Greatest Greenhouse Concentration." Despite the numerous flaws detailed in the "Harry Read Me" file, the IPCC still favors the CRU's HadCRUT4 temperature record. This record shows warming of less than 0.6 degree from 1979 to 2014. See "[[Global warming#The temperature record|The Temperature Record]]."</ref>

Radiosonde (weather balloon) and satellite data shows that the lower troposphere warmed by 0.44 degrees Celsius between 1979 and 2014. This corresponds to a rate of 1.7 degrees per century. If the AGW theory were correct, the lower troposphere would be warming at a rate of 3.1 degrees per century, according to an average of 102 climate models used by the Intergovernmental Panel on Climate Change (IPCC).<ref>"[https://www.newcriterion.com//cm/images/THE%20CLIMATE%20SURPRISE%20PAMPHLET.pdf The Climate Surprise Pamphet]", ''The New Criterion'', 2016. Taken from chart "All 3 Global Temperature Dataset Types Disagree with the Climate Model During the Period of Greatest Greenhouse Concentration." Despite the numerous flaws detailed in the "Harry Read Me" file, the IPCC still favors the CRU's HadCRUT4 temperature record. This record shows warming of less than 0.6 degree from 1979 to 2014. See "[[Global warming#The temperature record|The Temperature Record]]."</ref>

Radiosonde and satellite data are the most accurate sources for global temperature, but they do not go back far enough to reveal the long-term trend. A reanalysis of weather station data for 1943 to 2012 by U.S. climate researcher Roy Spencer shows that after a cooler period in the 1960s and 1970s, U.S. temperatures returned to their earlier level. Unlike the official weather station record, Spencer's data includes only those stations that recorded temperature at a consistent time of day.<ref name="Spencer" />  

Radiosonde and satellite data are the most accurate sources for global temperature. To go back further, other methods must be used. A reanalysis of weather station data for 1943 to 2012 by U.S. climate researcher Roy Spencer shows that after a cooler period in the 1960s and 1970s, U.S. temperatures returned to their earlier level. Unlike the official weather station record, Spencer's data includes only those stations that recorded temperature at a consistent time of day.<ref name="Spencer" />  

==Difficulties with the theory==

==Difficulties with the theory==