File:20200327 Climate change deniers cherry picking time periods.gif

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Summary

Description

English: Animated GIF showing how climate change deniers cherry pick time periods to assert global temperatures are not rising.

Data source for Version 8 (data through 2023):

HadCRUT data from https://climate.metoffice.cloud/temperature.html

Archive thereof: https://web.archive.org/web/20240117053030/https://climate.metoffice.cloud/temperature.html

Click at right to show/hide sourcing for earlier versions)

Data source for earlier versions:

HadCRUT 4.6.0.0 NAVIGATION PAGE:

https://www.metoffice.gov.uk/hadobs/hadcrut4/data/current/download.html

Choose "HadCRUT4 time series: ensemble medians and uncertainties", "Global (NH+SH)/2", "Annual".

SOURCE:

https://www.metoffice.gov.uk/hadobs/hadcrut4/data/current/time_series/HadCRUT.4.6.0.0.annual_ns_avg.txt

ARCHIVE:

https://web.archive.org/web/20200323210439/https://www.metoffice.gov.uk/hadobs/hadcrut4/data/current/time_series/HadCRUT.4.6.0.0.annual_ns_avg.txt

Base: 1961-1990

Sources describing general principle involved:

Stover, Dawn (September 23, 2014). "The global warming 'hiatus'". Bulletin of the Atomic Scientists. Archived from the original on July 11, 2020.

Zimmerman, Jess (November 7, 2011). "Handy image shows how climate deniers manipulate data". Grist. Archived from the original on October 1, 2019. (credits the following Skeptical Science article for its GIF)

The BEST Summary / Global Warming Continues. SkepticalScience.com (November 12, 2011). Archived from the original on November 13, 2011. Skeptical Science GIF: link (archive)

Technical documentation:

SVG code for individual frames was automatically generated by the "Scatterplots" spreadsheet linked at User:RCraig09/Excel to XML for SVG. Additions and adjustments were made in a text editor.
Inkscape imported the SVG, adjusted opacity of red and blue trendlines (each: 15%, 30%, 50%, 100% opacity), and exported to form four blue-trendline PNGs and four red-trendline PNGs. One further PNG has no trendlines.
Gimp imported PNGs as layers, and created looping animated GIF (70 ms/frame) containing: 31 no-trendline frames, three red-trendline frames ramping up to full (22 frame) red-trendline frames and three red-trendline frames ramping down to three no-trendline frames, three blue-trendline frames ramping up to full (22 frame) blue-trendline frames and closing with three blue-trendline frames ramping down. Total: 90 frames.

Date

27 March 2020

Source

Own work

Author

RCraig09

Original data

Click at right to show/hide temperature data)

Note that the baseline time period changed to the pre-industrial value, so the trace is shifted up on the vertical axis temperature scale, compared to earlier versions of this chart.

Year HadleyCRUT
1850 -0.08
1851 0.11
1852 0.11
1853 0.07
1854 0.05
1855 0.04
1856 0.02
1857 -0.13
1858 -0.05
1859 0.06
1860 -0.05
1861 -0.09
1862 -0.2
1863 0
1864 -0.13
1865 0.01
1866 0
1867 -0.02
1868 -0.01
1869 0.02
1870 0.01
1871 -0.03
1872 0.01
1873 0
1874 -0.03
1875 -0.04
1876 -0.08
1877 0.24
1878 0.33
1879 0.04
1880 0.02
1881 0.11
1882 0.04
1883 -0.01
1884 -0.15
1885 -0.13
1886 -0.08
1887 -0.16
1888 -0.04
1889 0.09
1890 -0.17
1891 -0.06
1892 -0.17
1893 -0.15
1894 -0.14
1895 -0.11
1896 0.06
1897 0.08
1898 -0.15
1899 -0.02
1900 0.11
1901 0.05
1902 -0.1
1903 -0.19
1904 -0.26
1905 -0.07
1906 0.02
1907 -0.16
1908 -0.17
1909 -0.2
1910 -0.19
1911 -0.2
1912 -0.14
1913 -0.13
1914 0.08
1915 0.15
1916 -0.08
1917 -0.2
1918 -0.08
1919 0.01
1920 0.04
1921 0.1
1922 0
1923 0.02
1924 0.03
1925 0.06
1926 0.22
1927 0.11
1928 0.13
1929 -0.05
1930 0.16
1931 0.24
1932 0.19
1933 0.02
1934 0.17
1935 0.13
1936 0.17
1937 0.32
1938 0.33
1939 0.3
1940 0.42
1941 0.38
1942 0.34
1943 0.35
1944 0.48
1945 0.38
1946 0.22
1947 0.25
1948 0.22
1949 0.2
1950 0.11
1951 0.28
1952 0.36
1953 0.42
1954 0.22
1955 0.14
1956 0.08
1957 0.3
1958 0.32
1959 0.29
1960 0.22
1961 0.32
1962 0.28
1963 0.3
1964 0.03
1965 0.14
1966 0.19
1967 0.22
1968 0.17
1969 0.31
1970 0.26
1971 0.13
1972 0.25
1973 0.39
1974 0.17
1975 0.23
1976 0.12
1977 0.44
1978 0.35
1979 0.43
1980 0.54
1981 0.59
1982 0.37
1983 0.56
1984 0.39
1985 0.39
1986 0.44
1987 0.58
1988 0.62
1989 0.52
1990 0.7
1991 0.68
1992 0.47
1993 0.51
1994 0.57
1995 0.72
1996 0.62
1997 0.76
1998 0.92
1999 0.66
2000 0.67
2001 0.83
2002 0.88
2003 0.88
2004 0.81
2005 0.95
2006 0.91
2007 0.93
2008 0.81
2009 0.94
2010 1.02
2011 0.88
2012 0.92
2013 0.96
2014 1.01
2015 1.17
2016 1.27
2017 1.19
2018 1.1
2019 1.23
2020 1.26
2021 1.1
2022 1.14
2023 1.44

Licensing

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 4.0 International license.

You are free:

to share – to copy, distribute and transmit the work
to remix – to adapt the work

Under the following conditions:

attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Dimensions	User	Comment
current	18:48, 19 January 2024	1,200 × 800 (5.41 MB)	RCraig09	Version 8: Update to include data through 2023 . . . . misc formal (appearance) changes
	20:57, 2 October 2021	1,200 × 800 (3.79 MB)	RCraig09	Version 7: update to include 2020 value. . . . Change aspect ratio slightly so chart takes up less vertical space
	04:49, 11 August 2020	1,200 × 900 (3.56 MB)	RCraig09	Version 6: White background, per Femke suggestion
	16:26, 4 July 2020	1,200 × 900 (3.75 MB)	RCraig09	Version 5: Reversing red and blue color scheme, so red represents warming and blue represents countertrend
	19:32, 27 June 2020	1,200 × 900 (3.61 MB)	RCraig09	Version 4: Shortened length of red bars to be commensurate with time periods over which they estimate. . . Squaring off ends of red and blue bars (formal) . . . Increasing frame duration from 60 to 70 ms . . . increasing duration of no-bars graphic and reducing duration of red- and blue-bar graphics
	16:40, 11 April 2020	1,200 × 900 (3.62 MB)	RCraig09	Version 3: Make transitions smoother. Compress left axis legends a bit for space. Light gray border.
	04:45, 6 April 2020	1,200 × 900 (190 KB)	RCraig09	VERSION TWO: Add third frame, with no trendlines. Make size 1200x900. This version was created in Gimp.
	04:25, 28 March 2020	480 × 360 (78 KB)	RCraig09	Uploaded own work with UploadWizard