165
edits
Changes
Jump to navigation
Jump to search
Line 1:
Line 1: − +
no edit summary
The '''"hockey stick graph"''' is a reconstruction of the Earth's atmosphere temperature from various proxies such as tree rings, superimposed on the record of thermometer readings from ground-based weather stations. The proxy estimates go back 1,000 years, while the thermometer readings date from 1850.
The '''"hockey stick graph"''' is a reconstruction of the Earth's atmosphere temperature from various proxies such as tree rings, superimposed on the record of thermometer readings from ground-based weather stations. The proxy estimates go back 1,000 years, while the thermometer readings date from 1850.
The UN climate panel ([[IPCC]]) decided to stop using the traditionally accepted proxy estimates, which had shown a distinct (and naturally caused) [[Medieval Warm Period]] followed by a [[Little Ice Age]]. Without giving any reason for this change, they elevated recent recent PhD grantee [[Michael Mann]] (based at the highly liberal [[University of Massachusetts - Amherst]]) to a lead author of one of their assessments.
The UN climate panel ([[IPCC]]) decided to stop using the traditionally accepted proxy estimates, which had shown a distinct (and naturally caused) [[Medieval Warm Period]] followed by a [[Little Ice Age]]. Without giving any reason for this change, they elevated recent PhD grantee [[Michael Mann]] (based at the highly liberal [[University of Massachusetts - Amherst]]) to a lead author of one of their assessments.
Mann's graph, which was shaped like a hockey stick, portrayed temperatures as steadily declining since medieval times and then sharply rising in the last century and a half. Notably, his reconstruction fueled claims that 1998 and following years had the highest temperatures in 1,000 years.
Mann's graph, which was shaped like a hockey stick, portrayed temperatures as steadily declining since medieval times and then sharply rising in the last century and a half. Notably, his reconstruction fueled claims that 1998 and following years had the highest temperatures in 1,000 years.