claim: "Mike's Nature trick" has nothing to do with "hide the decline", instead refering to a technique by Michael Mann to plot instrumental temperature along with past reconstructions.
evidences.evidence_id: Climatic Research Unit documents:57
evidences.article: Climatic Research Unit documents
evidences.evidence: "Mike's Nature trick" referred to Michael E. Mann's paper on temperature trends published by Michael Mann in Nature in 1998, which combined various proxy records and related them to actual temperature records: it included a figure later dubbed the ""hockey stick" graph, which clearly distinguished between the proxy and instrumental data.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Climatic Research Unit email controversy:43
evidences.article: Climatic Research Unit email controversy
evidences.evidence: Many commentators quoted one email in which Phil Jones said that he had used "Mike's Nature trick" in a 1999 graph for the World Meteorological Organization "to hide the decline" in proxy temperatures derived from tree-ring analyses when measured temperatures were actually rising.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Hockey stick graph:86
evidences.article: Hockey stick graph
evidences.evidence: As part of his Phd research, Michael E. Mann worked with seismologist Jeffrey Park on developing statistical techniques for find long term oscillations of natural variability in the instrumental temperature record of global surface temperatures over the last 140 years; Mann & Park 1993 showed patterns relating to the El Niño–Southern Oscillation, and Mann & Park 1994 found what was later termed the Atlantic multidecadal oscillation.
evidences.votes: REFUTES SUPPORTS
evidences.evidence_id: Michael E. Mann:46
evidences.article: Michael E. Mann
evidences.evidence: The same procedure was also used to represent key information in the instrumental temperature record for comparison with the proxy series, enabling validation of the reconstruction.
evidences.votes: NOT_ENOUGH_INFO SUPPORTS
evidences.evidence_id: Michael E. Mann:52
evidences.article: Michael E. Mann
evidences.evidence: In it, "Spatially resolved global reconstructions of annual surface temperature patterns" were related to "changes in greenhouse-gas concentrations, solar irradiance, and volcanic aerosols" leading to the conclusion that "each of these factors has contributed to the climate variability of the past 400 years, with greenhouse gases emerging as the dominant forcing during the twentieth century.
evidences.votes: REFUTES SUPPORTS