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Single years and the 20-year mean

Single years as a thin line under their 20-year mean, with a horizontal threshold and a vertical date marker. Illustrative values.

Single years and the 20-year mean

examples/annual-mean-threshold.json
{
  "schemaVersion": 1,
  "type": "time",
  "title": "Single years and the 20-year mean",
  "source": "Illustrative values, chartlet",
  "showValues": false,
  "timeAxis": {
    "title": "Year"
  },
  "panes": [
    {
      "valueAxis": {
        "title": "Warming since pre-industrial in °C"
      },
      "layers": [
        {
          "mark": "line",
          "name": "Single years",
          "color": "#98a2b3",
          "points": [
            {
              "time": "1940",
              "value": -0.11
            },
            {
              "time": "1941",
              "value": 0.08
            },
            {
              "time": "1942",
              "value": 0.05
            },
            {
              "time": "1943",
              "value": -0.08
            },
            {
              "time": "1944",
              "value": 0.05
            },
            {
              "time": "1945",
              "value": 0.22
            },
            {
              "time": "1946",
              "value": 0.11
            },
            {
              "time": "1947",
              "value": 0.01
            },
            {
              "time": "1948",
              "value": 0.17
            },
            {
              "time": "1949",
              "value": 0.22
            },
            {
              "time": "1950",
              "value": 0.02
            },
            {
              "time": "1951",
              "value": -0.02
            },
            {
              "time": "1952",
              "value": 0.13
            },
            {
              "time": "1953",
              "value": 0.09
            },
            {
              "time": "1954",
              "value": -0.09
            },
            {
              "time": "1955",
              "value": -0.01
            },
            {
              "time": "1956",
              "value": 0.16
            },
            {
              "time": "1957",
              "value": 0.07
            },
            {
              "time": "1958",
              "value": -0.02
            },
            {
              "time": "1959",
              "value": 0.16
            },
            {
              "time": "1960",
              "value": 0.28
            },
            {
              "time": "1961",
              "value": 0.13
            },
            {
              "time": "1962",
              "value": 0.09
            },
            {
              "time": "1963",
              "value": 0.26
            },
            {
              "time": "1964",
              "value": 0.25
            },
            {
              "time": "1965",
              "value": 0.04
            },
            {
              "time": "1966",
              "value": 0.07
            },
            {
              "time": "1967",
              "value": 0.21
            },
            {
              "time": "1968",
              "value": 0.11
            },
            {
              "time": "1969",
              "value": -0.04
            },
            {
              "time": "1970",
              "value": 0.1
            },
            {
              "time": "1971",
              "value": 0.24
            },
            {
              "time": "1972",
              "value": 0.11
            },
            {
              "time": "1973",
              "value": 0.08
            },
            {
              "time": "1974",
              "value": 0.28
            },
            {
              "time": "1975",
              "value": 0.34
            },
            {
              "time": "1976",
              "value": 0.17
            },
            {
              "time": "1977",
              "value": 0.2
            },
            {
              "time": "1978",
              "value": 0.36
            },
            {
              "time": "1979",
              "value": 0.28
            },
            {
              "time": "1980",
              "value": 0.09
            },
            {
              "time": "1981",
              "value": 0.18
            },
            {
              "time": "1982",
              "value": 0.29
            },
            {
              "time": "1983",
              "value": 0.14
            },
            {
              "time": "1984",
              "value": 0.05
            },
            {
              "time": "1985",
              "value": 0.24
            },
            {
              "time": "1986",
              "value": 0.32
            },
            {
              "time": "1987",
              "value": 0.17
            },
            {
              "time": "1988",
              "value": 0.2
            },
            {
              "time": "1989",
              "value": 0.41
            },
            {
              "time": "1990",
              "value": 0.4
            },
            {
              "time": "1991",
              "value": 0.24
            },
            {
              "time": "1992",
              "value": 0.32
            },
            {
              "time": "1993",
              "value": 0.46
            },
            {
              "time": "1994",
              "value": 0.32
            },
            {
              "time": "1995",
              "value": 0.18
            },
            {
              "time": "1996",
              "value": 0.31
            },
            {
              "time": "1997",
              "value": 0.37
            },
            {
              "time": "1998",
              "value": 0.2
            },
            {
              "time": "1999",
              "value": 0.18
            },
            {
              "time": "2000",
              "value": 0.38
            },
            {
              "time": "2001",
              "value": 0.4
            },
            {
              "time": "2002",
              "value": 0.26
            },
            {
              "time": "2003",
              "value": 0.35
            },
            {
              "time": "2004",
              "value": 0.55
            },
            {
              "time": "2005",
              "value": 0.46
            },
            {
              "time": "2006",
              "value": 0.34
            },
            {
              "time": "2007",
              "value": 0.47
            },
            {
              "time": "2008",
              "value": 0.55
            },
            {
              "time": "2009",
              "value": 0.37
            },
            {
              "time": "2010",
              "value": 0.29
            },
            {
              "time": "2011",
              "value": 0.45
            },
            {
              "time": "2012",
              "value": 0.46
            },
            {
              "time": "2013",
              "value": 0.28
            },
            {
              "time": "2014",
              "value": 0.33
            },
            {
              "time": "2015",
              "value": 0.53
            },
            {
              "time": "2016",
              "value": 0.49
            },
            {
              "time": "2017",
              "value": 0.37
            },
            {
              "time": "2018",
              "value": 0.53
            },
            {
              "time": "2019",
              "value": 0.68
            },
            {
              "time": "2020",
              "value": 0.54
            },
            {
              "time": "2021",
              "value": 0.46
            },
            {
              "time": "2022",
              "value": 0.63
            },
            {
              "time": "2023",
              "value": 0.65
            },
            {
              "time": "2024",
              "value": 0.45
            }
          ]
        },
        {
          "mark": "line",
          "name": "20-year mean",
          "points": [
            {
              "time": "1959",
              "value": 0.06
            },
            {
              "time": "1960",
              "value": 0.08
            },
            {
              "time": "1961",
              "value": 0.08
            },
            {
              "time": "1962",
              "value": 0.08
            },
            {
              "time": "1963",
              "value": 0.1
            },
            {
              "time": "1964",
              "value": 0.11
            },
            {
              "time": "1965",
              "value": 0.1
            },
            {
              "time": "1966",
              "value": 0.1
            },
            {
              "time": "1967",
              "value": 0.11
            },
            {
              "time": "1968",
              "value": 0.11
            },
            {
              "time": "1969",
              "value": 0.09
            },
            {
              "time": "1970",
              "value": 0.1
            },
            {
              "time": "1971",
              "value": 0.11
            },
            {
              "time": "1972",
              "value": 0.11
            },
            {
              "time": "1973",
              "value": 0.11
            },
            {
              "time": "1974",
              "value": 0.13
            },
            {
              "time": "1975",
              "value": 0.15
            },
            {
              "time": "1976",
              "value": 0.15
            },
            {
              "time": "1977",
              "value": 0.15
            },
            {
              "time": "1978",
              "value": 0.17
            },
            {
              "time": "1979",
              "value": 0.18
            },
            {
              "time": "1980",
              "value": 0.17
            },
            {
              "time": "1981",
              "value": 0.17
            },
            {
              "time": "1982",
              "value": 0.18
            },
            {
              "time": "1983",
              "value": 0.18
            },
            {
              "time": "1984",
              "value": 0.17
            },
            {
              "time": "1985",
              "value": 0.18
            },
            {
              "time": "1986",
              "value": 0.19
            },
            {
              "time": "1987",
              "value": 0.19
            },
            {
              "time": "1988",
              "value": 0.19
            },
            {
              "time": "1989",
              "value": 0.21
            },
            {
              "time": "1990",
              "value": 0.23
            },
            {
              "time": "1991",
              "value": 0.23
            },
            {
              "time": "1992",
              "value": 0.24
            },
            {
              "time": "1993",
              "value": 0.26
            },
            {
              "time": "1994",
              "value": 0.26
            },
            {
              "time": "1995",
              "value": 0.25
            },
            {
              "time": "1996",
              "value": 0.26
            },
            {
              "time": "1997",
              "value": 0.27
            },
            {
              "time": "1998",
              "value": 0.26
            },
            {
              "time": "1999",
              "value": 0.25
            },
            {
              "time": "2000",
              "value": 0.27
            },
            {
              "time": "2001",
              "value": 0.28
            },
            {
              "time": "2002",
              "value": 0.28
            },
            {
              "time": "2003",
              "value": 0.29
            },
            {
              "time": "2004",
              "value": 0.31
            },
            {
              "time": "2005",
              "value": 0.32
            },
            {
              "time": "2006",
              "value": 0.32
            },
            {
              "time": "2007",
              "value": 0.34
            },
            {
              "time": "2008",
              "value": 0.36
            },
            {
              "time": "2009",
              "value": 0.35
            },
            {
              "time": "2010",
              "value": 0.35
            },
            {
              "time": "2011",
              "value": 0.36
            },
            {
              "time": "2012",
              "value": 0.37
            },
            {
              "time": "2013",
              "value": 0.36
            },
            {
              "time": "2014",
              "value": 0.36
            },
            {
              "time": "2015",
              "value": 0.38
            },
            {
              "time": "2016",
              "value": 0.38
            },
            {
              "time": "2017",
              "value": 0.39
            },
            {
              "time": "2018",
              "value": 0.4
            },
            {
              "time": "2019",
              "value": 0.43
            },
            {
              "time": "2020",
              "value": 0.43
            },
            {
              "time": "2021",
              "value": 0.44
            },
            {
              "time": "2022",
              "value": 0.46
            },
            {
              "time": "2023",
              "value": 0.47
            },
            {
              "time": "2024",
              "value": 0.47
            }
          ]
        },
        {
          "mark": "annotation",
          "value": 1.5,
          "label": "1.5 °C limit"
        },
        {
          "mark": "annotation",
          "time": "2015-12-12",
          "label": "Paris Agreement"
        }
      ]
    }
  ]
}
Single years and the 20-year mean
Single years and the 20-year meanTime chart with 85 points from 1940 to 2024 and 2 series (Single years, 20-year mean). Highest: 0.68 (Single years in 2019). Lowest: −0.11 (Single years in 1940). Reference lines: 1.5 °C limit at 1.5; Paris Agreement at 2015-12-12.−0.50.00.51.01.52.0194019501960197019801990200020102020Warming since pre-industrial in °CSingle years20-year mean1.5 °C limit: 1.5Paris Agreement: 2015-12-121940 – Single years: −0.111941 – Single years: 0.081942 – Single years: 0.051943 – Single years: −0.081944 – Single years: 0.051945 – Single years: 0.221946 – Single years: 0.111947 – Single years: 0.011948 – Single years: 0.171949 – Single years: 0.221950 – Single years: 0.021951 – Single years: −0.021952 – Single years: 0.131953 – Single years: 0.091954 – Single years: −0.091955 – Single years: −0.011956 – Single years: 0.161957 – Single years: 0.071958 – Single years: −0.021959 – Single years: 0.161960 – Single years: 0.281961 – Single years: 0.131962 – Single years: 0.091963 – Single years: 0.261964 – Single years: 0.251965 – Single years: 0.041966 – Single years: 0.071967 – Single years: 0.211968 – Single years: 0.111969 – Single years: −0.041970 – Single years: 0.11971 – Single years: 0.241972 – Single years: 0.111973 – Single years: 0.081974 – Single years: 0.281975 – Single years: 0.341976 – Single years: 0.171977 – Single years: 0.21978 – Single years: 0.361979 – Single years: 0.281980 – Single years: 0.091981 – Single years: 0.181982 – Single years: 0.291983 – Single years: 0.141984 – Single years: 0.051985 – Single years: 0.241986 – Single years: 0.321987 – Single years: 0.171988 – Single years: 0.21989 – Single years: 0.411990 – Single years: 0.41991 – Single years: 0.241992 – Single years: 0.321993 – Single years: 0.461994 – Single years: 0.321995 – Single years: 0.181996 – Single years: 0.311997 – Single years: 0.371998 – Single years: 0.21999 – Single years: 0.182000 – Single years: 0.382001 – Single years: 0.42002 – Single years: 0.262003 – Single years: 0.352004 – Single years: 0.552005 – Single years: 0.462006 – Single years: 0.342007 – Single years: 0.472008 – Single years: 0.552009 – Single years: 0.372010 – Single years: 0.292011 – Single years: 0.452012 – Single years: 0.462013 – Single years: 0.282014 – Single years: 0.332015 – Single years: 0.532016 – Single years: 0.492017 – Single years: 0.372018 – Single years: 0.532019 – Single years: 0.682020 – Single years: 0.542021 – Single years: 0.462022 – Single years: 0.632023 – Single years: 0.652024 – Single years: 0.451959 – 20-year mean: 0.061960 – 20-year mean: 0.081961 – 20-year mean: 0.081962 – 20-year mean: 0.081963 – 20-year mean: 0.11964 – 20-year mean: 0.111965 – 20-year mean: 0.11966 – 20-year mean: 0.11967 – 20-year mean: 0.111968 – 20-year mean: 0.111969 – 20-year mean: 0.091970 – 20-year mean: 0.11971 – 20-year mean: 0.111972 – 20-year mean: 0.111973 – 20-year mean: 0.111974 – 20-year mean: 0.131975 – 20-year mean: 0.151976 – 20-year mean: 0.151977 – 20-year mean: 0.151978 – 20-year mean: 0.171979 – 20-year mean: 0.181980 – 20-year mean: 0.171981 – 20-year mean: 0.171982 – 20-year mean: 0.181983 – 20-year mean: 0.181984 – 20-year mean: 0.171985 – 20-year mean: 0.181986 – 20-year mean: 0.191987 – 20-year mean: 0.191988 – 20-year mean: 0.191989 – 20-year mean: 0.211990 – 20-year mean: 0.231991 – 20-year mean: 0.231992 – 20-year mean: 0.241993 – 20-year mean: 0.261994 – 20-year mean: 0.261995 – 20-year mean: 0.251996 – 20-year mean: 0.261997 – 20-year mean: 0.271998 – 20-year mean: 0.261999 – 20-year mean: 0.252000 – 20-year mean: 0.272001 – 20-year mean: 0.282002 – 20-year mean: 0.282003 – 20-year mean: 0.292004 – 20-year mean: 0.312005 – 20-year mean: 0.322006 – 20-year mean: 0.322007 – 20-year mean: 0.342008 – 20-year mean: 0.362009 – 20-year mean: 0.352010 – 20-year mean: 0.352011 – 20-year mean: 0.362012 – 20-year mean: 0.372013 – 20-year mean: 0.362014 – 20-year mean: 0.362015 – 20-year mean: 0.382016 – 20-year mean: 0.382017 – 20-year mean: 0.392018 – 20-year mean: 0.42019 – 20-year mean: 0.432020 – 20-year mean: 0.432021 – 20-year mean: 0.442022 – 20-year mean: 0.462023 – 20-year mean: 0.472024 – 20-year mean: 0.471.5 °C limitParis AgreementYear

Source: Illustrative values, chartlet

Show chart data
Data for Single years and the 20-year mean
TimeSingle years20-year mean
1940−0.11Missing
19410.08Missing
19420.05Missing
1943−0.08Missing
19440.05Missing
19450.22Missing
19460.11Missing
19470.01Missing
19480.17Missing
19490.22Missing
19500.02Missing
1951−0.02Missing
19520.13Missing
19530.09Missing
1954−0.09Missing
1955−0.01Missing
19560.16Missing
19570.07Missing
1958−0.02Missing
19590.160.06
19600.280.08
19610.130.08
19620.090.08
19630.260.1
19640.250.11
19650.040.1
19660.070.1
19670.210.11
19680.110.11
1969−0.040.09
19700.10.1
19710.240.11
19720.110.11
19730.080.11
19740.280.13
19750.340.15
19760.170.15
19770.20.15
19780.360.17
19790.280.18
19800.090.17
19810.180.17
19820.290.18
19830.140.18
19840.050.17
19850.240.18
19860.320.19
19870.170.19
19880.20.19
19890.410.21
19900.40.23
19910.240.23
19920.320.24
19930.460.26
19940.320.26
19950.180.25
19960.310.26
19970.370.27
19980.20.26
19990.180.25
20000.380.27
20010.40.28
20020.260.28
20030.350.29
20040.550.31
20050.460.32
20060.340.32
20070.470.34
20080.550.36
20090.370.35
20100.290.35
20110.450.36
20120.460.37
20130.280.36
20140.330.36
20150.530.38
20160.490.38
20170.370.39
20180.530.4
20190.680.43
20200.540.43
20210.460.44
20220.630.46
20230.650.47
20240.450.47
  • Time series with reference line
  • Measure against a threshold