English: Comparison of annual w:Warming stripes from four dataset sources: GISS, GHCN-v3, HadCRUT4.6.0.0, Berkeley Earth (all with 1961-1990 reference period). Datasets that did not have a native "reference period" of 1961-1990 were converted to have such. (Temperature average over the "reference period" determines boundary between blue and red stripes.) General notes: Credit for general concept of w:warming stripes: climate scientist Ed Hawkins, w:University of Reading, U.K. Data values are visualized using color rather than locations of points on a graph. The average temperature in reference period 1961-1990 determines boundary between blue and red. Horizontal scale is time, from 1850 (extreme left) to 2018 (right). Top two panels begin at 1880. Each hue (up to 8 blue and 8 red) covers a temperature range of 0.1 degrees Celsius. Data is global (not for a locality). A thin purple horizontal bar (purposely designed to be visually discreet) shows the reference period for the diagrams Full size warming stripes files for the bottom two panels have already been uploaded to Commons, and are linked in their images below. More detailed information is found in the descriptions on those image pages. Dataset sources: Panel 1: NASA / GISS (1880-2018) Global Temperature / Latest Annual Average Anomaly: 2018. climate.nasa.gov. NASA (2019). Archived from the original on July 8, 2019. Retrieved on July 12, 2019. "Download Data / Get Data: HTTP" ● Link to actual data (archive). I converted to a reference period of 1961-1990. Panel 2: GHCN-v3 (1880-2018) AR4 Observations / Global mean temperature time series. ipcc-data.org. IPCC Data Distribution Centre (2019). Archived from the original on June 9, 2019. Retrieved on July 11, 2019. "GISS / Info / Data" ● Link to actual data (archive). I converted to a reference period of 1961-1990. Panel 3: HadCRUT 4.6.0.0 (1850-2018) Met Office Hadley Centre observations datasets / HadCRUT 4. metoffice.gov.uk. Met Office (2019). Archived from the original on January 2, 2019. Retrieved on July 12, 2019. "Download Data" ● Link to data download page (under "HadCRUT4 time series: ensemble members" click on "Global (NH+SH)/2) / / Annual / " to download zip file (I used an average of datasets 1-10)(archive). Panel 4: Berkeley Earth (1850-2018) Land + Ocean (1850 – Recent) / Monthly Global Average Temperature (annual summary). berkeleyearth.lbl.gov. w:Berkeley Earth (2019). Archived from the original on June 29, 2019. Retrieved on July 4, 2019. I started with "Annual Anomaly" from under "Land + Ocean anomaly using air temperature above sea ice" and from under "Land + Ocean using water temperature below sea ice" and converted to a reference period of 1961-1990. _______________________________________________________________ Click at right to show/hide ACTUAL DATA Actual DATA used to generate Panel 1: NASA / GISS (1880-2018) Year	Anomaly w/ 1961-1990 Ref period 1880	-0.2683 1881	-0.1783 1882	-0.2083 1883	-0.2683 1884	-0.3783 1885	-0.4283 1886	-0.4083 1887	-0.4483 1888	-0.2683 1889	-0.1983 1890	-0.4483 1891	-0.3183 1892	-0.3583 1893	-0.3983 1894	-0.3783 1895	-0.3183 1896	-0.1983 1897	-0.1983 1898	-0.3583 1899	-0.2683 1900	-0.1683 1901	-0.2483 1902	-0.3783 1903	-0.4683 1904	-0.5683 1905	-0.3583 1906	-0.3183 1907	-0.4883 1908	-0.5283 1909	-0.5783 1910	-0.5383 1911	-0.5383 1912	-0.4583 1913	-0.4483 1914	-0.2583 1915	-0.2383 1916	-0.4583 1917	-0.5583 1918	-0.3983 1919	-0.3783 1920	-0.3783 1921	-0.2883 1922	-0.3783 1923	-0.3683 1924	-0.3783 1925	-0.3283 1926	-0.2083 1927	-0.3283 1928	-0.3083 1929	-0.4683 1930	-0.2583 1931	-0.1983 1932	-0.2583 1933	-0.3783 1934	-0.2283 1935	-0.2983 1936	-0.2483 1937	-0.1283 1938	-0.1083 1939	-0.1183 1940	0.0217 1941	0.0817 1942	-0.0283 1943	-0.0083 1944	0.1017 1945	-0.0083 1946	-0.1783 1947	-0.1283 1948	-0.2083 1949	-0.2083 1950	-0.2783 1951	-0.1683 1952	-0.0883 1953	-0.0183 1954	-0.2283 1955	-0.2383 1956	-0.2883 1957	-0.0483 1958	-0.0383 1959	-0.0683 1960	-0.1183 1961	-0.0383 1962	-0.0583 1963	-0.0483 1964	-0.2983 1965	-0.2083 1966	-0.1583 1967	-0.1183 1968	-0.1783 1969	-0.0383 1970	-0.0783 1971	-0.1783 1972	-0.0883 1973	0.0617 1974	-0.1683 1975	-0.1083 1976	-0.1983 1977	0.0817 1978	-0.0283 1979	0.0617 1980	0.1617 1981	0.2217 1982	0.0417 1983	0.2117 1984	0.0517 1985	0.0117 1986	0.0817 1987	0.2217 1988	0.2817 1989	0.1717 1990	0.3517 1991	0.3017 1992	0.1217 1993	0.1317 1994	0.2117 1995	0.3517 1996	0.2317 1997	0.3717 1998	0.5117 1999	0.2817 2000	0.2917 2001	0.4317 2002	0.5217 2003	0.5217 2004	0.4417 2005	0.5817 2006	0.5417 2007	0.5617 2008	0.4417 2009	0.5517 2010	0.6217 2011	0.5017 2012	0.5417 2013	0.5817 2014	0.6417 2015	0.8017 2016	0.9117 2017	0.8217 2018	0.7517 Actual DATA used to generate Panel 2: GHCN-v3 (1880-2018) Year	GISS GHCN-v3 AR4 Anomaly (Shifted: 1961-1990 ref) 1880	-0.625 1881	-0.600 1882	-0.503 1883	-0.517 1884	-0.814 1885	-0.671 1886	-0.810 1887	-0.850 1888	-0.618 1889	-0.368 1890	-0.733 1891	-0.725 1892	-0.658 1893	-0.689 1894	-0.570 1895	-0.499 1896	-0.460 1897	-0.362 1898	-0.538 1899	-0.462 1900	-0.304 1901	-0.291 1902	-0.491 1903	-0.555 1904	-0.675 1905	-0.495 1906	-0.383 1907	-0.678 1908	-0.534 1909	-0.549 1910	-0.475 1911	-0.511 1912	-0.483 1913	-0.482 1914	-0.224 1915	-0.220 1916	-0.450 1917	-0.668 1918	-0.568 1919	-0.326 1920	-0.419 1921	-0.312 1922	-0.401 1923	-0.412 1924	-0.379 1925	-0.394 1926	-0.174 1927	-0.321 1928	-0.239 1929	-0.470 1930	-0.284 1931	-0.223 1932	-0.247 1933	-0.383 1934	-0.237 1935	-0.361 1936	-0.223 1937	-0.138 1938	-0.081 1939	-0.263 1940	-0.068 1941	-0.110 1942	-0.097 1943	-0.149 1944	-0.094 1945	-0.228 1946	-0.214 1947	-0.096 1948	-0.208 1949	-0.240 1950	-0.343 1951	-0.198 1952	-0.156 1953	-0.073 1954	-0.265 1955	-0.260 1956	-0.363 1957	-0.109 1958	-0.062 1959	-0.097 1960	-0.158 1961	-0.045 1962	-0.111 1963	-0.111 1964	-0.381 1965	-0.298 1966	-0.192 1967	-0.145 1968	-0.221 1969	-0.110 1970	-0.061 1971	-0.200 1972	-0.152 1973	0.091 1974	-0.170 1975	-0.117 1976	-0.308 1977	0.082 1978	0.007 1979	0.073 1980	0.211 1981	0.307 1982	0.003 1983	0.258 1984	0.083 1985	0.063 1986	0.126 1987	0.288 1988	0.385 1989	0.245 1990	0.403 1991	0.400 1992	0.115 1993	0.145 1994	0.257 1995	0.439 1996	0.362 1997	0.408 1998	0.705 1999	0.456 2000	0.433 2001	0.531 2002	0.658 2003	0.635 2004	0.541 2005	0.733 2006	0.630 2007	0.713 2008	0.500 2009	0.645 2010	0.776 2011	0.647 2012	0.631 2013	0.683 2014	0.743 2015	0.843 2016	1.114 2017	1.005 2018	0.920 DATA used to generate Panel 3: HadCRUT 4.6.0.0 (1850-2018) Data is listed in Wikimedia page linked by the related image below. Panel 4: Berkeley Earth (1850-2018) Data is listed in Wikimedia page linked by the related image below.