Claim: NASA and NOAA faked climate data in the GISTEMP global temperature record to exaggerate global warming. 
Verdict: REFUTES

Retrieved passages:
title: Joseph D'Aleo
text: becomes silly to rely on such comparisons," said D'Aleo, who called the claimed manipulation a "scientific travesty" committed by activist scientists to promote a global-warming agenda. Also in 2010, D'Aleo and Anthony Watts published a book-length report entitled "Surface Temperature Records: Policy Driven Deception?" In the report, which they described as "a work in progress," they analyzed worldwide temperature records and concluded with the claim that the systematic manipulation and exaggeration of instrumental temperature data by leading meteorological institutions makes it impossible to say whether or not there was a significant amount of global warming in the 20th century. In

title: National Review
text: upper bounds of the chart at -10 and 110 degree Fahrenheit and zoomed out so as to obscure warming trends. In 2017, "National Review" published an article alleging that a top NOAA scientist claimed that National Oceanic and Atmospheric Administration (NOAA) engaged in data manipulation and rushed a study based on faulty data in order to influence the Paris climate negotiations. The article largely repeated allegations made in "The Daily Mail" without independent verification. The scientist in question later rebuked the claims made by the "National Review", noting that he did not accuse NOAA of data manipulation but instead raised

title: Michael E. Mann
text: the Southeastern Legal Foundation, Peabody Energy, the Competitive Enterprise Institute, and the Ohio Coal Association: the EPA found their claims were not supported by the evidence. At the request of Senator Jim Inhofe, who has called the science of man-made climate change a hoax, the Inspector General of the United States Department of Commerce investigated the emails in relation to NOAA, and concluded that there was no evidence of inappropriate manipulation of data. The Office of the Inspector General (OIG) of the National Science Foundation also carried out a detailed investigation, which it closed on August 15, 2011. It agreed

title: Joseph D'Aleo
text: data... to produce an exaggerated warming that would point to man’s influence.” D'Aleo asserted in a January 2010 report with E. Michael Smith that, in addition to the "deceptions" of the CRU, researchers at the National Climate Data Center (NCDC) in Asheville, North Carolina, and the NASA Goddard Institute for Space Studies (GISS) at Columbia University in New York City had also manipulated climate data, in order to claim that 2005 was the warmest year on record. "When the differences between the warmest year in history and the tenth warmest year is less than three quarters of a degree, it

title: Climatic Research Unit documents
text: beyond that which it could substantiate", but also blamed the university for mishandling Freedom of Information requests and called for a full investigation to resolve the questions raised. The Associated Press conducted a review of the e-mails and concluded that they showed scientists fending off sceptics, but did not support claims that global warming science had been faked. They stated that "One of the most disturbing elements suggests an effort to avoid sharing scientific data with critics skeptical of global warming", and mentioned ethical problems with this action due to the fact that "free access to data is important so

title: Climatic Research Unit documents
text: State University (PSU), one of the originators of the graph of temperature trends dubbed the "hockey stick graph". Climate change sceptics gained wide publicity for allegations that the hacked e-mails showed climate scientists colluded in manipulating data, withheld scientific information, and tried to prevent dissenting scientific papers from being published in peer reviewed journals. Academics and climate change researchers said that nothing in the emails proved wrongdoing, and dismissed the allegations. Independent reports said that the e-mails did not affect evidence that man made global warming is a real threat, and e-mails were being misrepresented to support unfounded claims of

title: Tom Fitton
text: has claimed that climate science is "fraud science", has filed lawsuits seeking to force the National Oceanic and Atmospheric Administration (NOAA) to release the correspondence of climate scientists who published a 2015 study in the journal "Science". The study had debunked one of the common claims made by those who reject the IPCC consensus, namely that there existed global warming "hiatus" between 1998–2012. The Climate Science Legal Defense Fund (CSLDF), American Meteorological Society and Union of Concerned Scientists condemned Judicial Watch, saying that the disclosure of private communications between scientists "would harm (or halt altogether) government scientists' ability to collaborate

title: Ivar Giaever
text: here are incontrovertible truth in a physical society. So the only answer to that is to resign and I resign in 11." He Claims referring to data on global average temperature (GISTEMP) published amongst others by NASA that show global average surface temperature has risen less than 1 K in 140 years, and not risen at all for the years from 2000 - 2014. A main point of Giaever's speech was discussing reliability of the statistical calculation of this temperature with respect to the spatial distribution of measurement locations over the globe, especially what he viewed as poor coverage in

title: Malcolm Roberts (politician)
text: was "mistaken" to assert NASA had removed data to hide Arctic warming in the 1940s. Schmidt stated that the data was freely available online and that Roberts should check it himself, adding that he was surprised that Roberts was in fact a senator, and that his allegation of inappropriate temperature data adjustment is "the definition of denial". Roberts' specific objection related to charts from Icelandic stations at Vestmannaeyjar and Teigarhorn, where temperatures from the 1930s and 1940s were adjusted down, removing the apparent warming recorded at that time. However a senior Icelandic meteorologist with a specialty in historical climatology emailed

title: James Hansen
text: in origin. In 2007, Stephen McIntyre notified GISS that many of the U.S. temperature records from the Historical Climatology Network (USHCN) displayed a discontinuity around the year 2000. NASA corrected the computer code used to process the data and credited McIntyre with pointing out the flaw. Hansen indicated that he felt that several news organizations had overreacted to this mistake. In 2010, Hansen published a paper entitled "Global Surface Temperature Change" describing current global temperature analysis. Hansen has also contributed toward the understanding of black carbon on regional climate. In recent decades, northern China has experienced increased drought, and southern

title: Global Warming Policy Foundation
text: for the Met Office, a government agency which works with the Climate Research Unit in providing global temperature information, dismissed this call. "If you look at the emails, there isn't any evidence that the data was falsified and there's no evidence that climate change is a hoax. It's a shame that some of the sceptics have had to take this rather shallow attempt to discredit robust science undertaken by some of the world's most respected scientists. The bottom line is that temperatures continue to rise and humans are responsible for it. We have every confidence in the science and the

title: Instrumental temperature record
text: remove biases from station records, and that such corrections allow information about long-term trends to be preserved. A study in 2013 also found that urban bias can be accounted for, and when all available station data is divided into rural and urban, that both temperature sets are broadly consistent. National Oceanic and Atmospheric Administration (NOAA) maintains the Global Historical Climatology Network (GHCN-Monthly) data base containing historical temperature, precipitation, and pressure data for thousands of land stations worldwide. Also, NOAA's National Climatic Data Center (NCDC) of surface temperature measurements maintains a global temperature record since 1880. HadCRUT, a collaboration between the

title: Global warming controversy
text: Surface Temperature group carried out an independent assessment of land temperature records, which examined issues raised by skeptics, such as the urban heat island effect, poor station quality, and the risk of data selection bias. The preliminary results, made public in October 2011, found that these factors had not biased the results obtained by NOAA, the Hadley Centre together with the Climatic Research Unit (HadCRUT) and NASA's GISS in earlier studies. The group also confirmed that over the past 50 years the land surface warmed by 0.911 °C, and their results closely matched those obtained from these earlier studies. The

title: Instrumental temperature record
text: the U.S. Global Change Research Program. The methods used to derive the principal estimates of global surface temperature trends — HadCRUT3, NOAA and NASA/GISS — are largely independent. The U.S. National Academy of Sciences, both in its 2002 report to President George W. Bush, and in later publications, has strongly endorsed evidence of an average global temperature increase in the 20th century. The preliminary results of an assessment carried out by the Berkeley Earth Surface Temperature group and made public in October 2011, found that over the past 50 years the land surface warmed by 0.911 °C, and their results

title: Malcolm Roberts (politician)
text: the NASA temperature data for the 1930s were "warmer than recent decades". In "The Guardian"'s assessment, Roberts was referring to a debunked conspiracy theory that claimed 1934 was hotter than 1998. Cox then asked if NASA, the Australian Academy of Science, and the Met Office in the UK were all collaborating to manipulate global temperature data, to which Roberts asked if he was being accused of claiming they were all collaborating, to which Cox responded: "What, they've all manipulated it in the same way and accidentally got to the same answer? Is that what you're saying?" Roberts is an advocate

title: The Great Global Warming Swindle
text: said. If Mr Durkin had gone directly to the NASA website he could have got the most up-to-date data. This would have demonstrated that the amount of global warming since 1975, as monitored by terrestrial weather stations around the world, has been greater than that between 1900 and 1940—although that would have undermined his argument. 'The original NASA data was very wiggly-lined and we wanted the simplest line we could find,' Mr Durkin said. Connor also wrote that although the graph in question was attributed to NASA in the film, when he asked Wag TV where the graph really came

title: Edward Wegman
text: in its inquiry criticizing the multi-proxy paleoclimate reconstructions which had been dubbed the "Hockey stick graph". Wegman produced a report and offered testimony supporting published papers disputing the methodology and data used by the climate scientists. The legitimacy of this investigation was disputed, and Sherwood Boehlert as chairman of the United States House Committee on Science, Space and Technology arranged for an investigation by the National Research Council, the North Report which found that the Wegman committee's conclusions lacked substance. In October 2010, George Mason University (GMU) announced they were conducting a formal investigation into charges of plagiarism and misconduct

title: Global warming controversy
text: Stephen McIntyre criticized the US instrumental temperature record and adjustments to it, and Pielke and others criticized the poor quality siting of a number of weather stations in the United States. In 2007, Anthony Watts began a volunteer effort to photographically document the siting quality of these stations. The "Journal of Geophysical Research – Atmospheres" subsequently published a study by Menne et al. which examined the record of stations picked out by Watts' Surfacestations.org and found that, if anything, the poorly sited stations showed a slight cool bias rather than the warm bias which Watts had anticipated. The Berkeley Earth

title: Global warming conspiracy theory
text: or engaged in a manipulative hoax. There have been allegations of malpractice, most notably in the Climatic Research Unit email controversy ("ClimateGate"). Eight committees investigated these allegations and published reports, each finding no evidence of fraud or scientific misconduct. The Muir Russell report stated that the scientists' "rigor and honesty as scientists are not in doubt," that the investigators "did not find any evidence of behavior that might undermine the conclusions of the IPCC assessments," but that there had been "a consistent pattern of failing to display the proper degree of openness." The scientific consensus that global warming is occurring

title: Watts Up With That?
text: Climate Audit. Columbia Journalism School writer Curtis Brainard has written that "scientists have repeatedly criticized [Watts] for misleading readers on subjects such as the reliability of the U.S. surface temperature record." In 2007 "WUWT" readers alerted Stephen McIntyre to a discrepancy in temperature records published by the Goddard Institute for Space Studies (GISS) based on data from United States Historical Climate Network. In August 2007, McIntyre notified GISS about the problematic numbers, which GISS acknowledged and promptly corrected. The change did not affect global temperature trends, but did have the marginal effect of changing the hottest year on record for