Helge Drange

The following images are updated on a regular, typical monthly, basis. By clicking on the images, higer resolution versions can be downloaded for use in presentations, etc. The data sources are given below each set of images. The images can be freely used, preferrably with reference to the data originator(s) and this site.

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Errors may occur since all figures are automatically updated with only sporadic checking.

Global, annual mean surface temperature (°C), including the monthly mean temperature of the current year, in red. Atmospheric CO₂ in ppm (parts per million) in blue. The smooth CO₂ curve is from air trapped in ice; the oscillating CO₂ curve is measured at Mauna Loa, Hawaii (the Keeling curve). 400 ppm corresponds to 0.04 % CO₂ in air.

CO₂-data from ice cores and instrumental recordings, both from the US National Oceanic and Atmospheric Administration. Temperature data from the UK Met Office Hadley Centre.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Atmospheric CO₂ measured in air in red and induced from air trapped in ice in black and blue in ppm (parts per million; so 400 ppm corresponds to 0.04 % CO₂ in air). The first figure is from Mauna Loa, Hawaii (the Keeling curve), the other figures show estimates of the global CO₂.

CO₂-data from ice cores and instrumental recordings, both from the US National Oceanic and Atmospheric Administration. Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Left: Global, annual mean surface temperature in red, with smoothed curve in dark red. Atmospheric CO₂ in ppm (parts per million) in blue. The smooth CO₂ curve is from air trapped in ice; the oscillating CO₂ curve is measured at Mauna Loa, Hawaii (the Keeling curve). 400 ppm corresponds to 0.04 % CO₂ in air. Number of solar flares in yellow, with smoothed curve in dark brown. Right: As above, but with the CO₂ concentrtation expressed as forcing in W/m².

Temperature data from the UK Met Office Hadley Centre. CO₂-data from ice cores and instrumental recordings, both from the US National Oceanic and Atmospheric Administration. Solar flare data from SIDC, the Solar Influences Data Analysis Center.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Comparison of six different global temperature analyses, relative to 1981-1210. NOAA, HadCRUT, Berkely and NASA are all based on (near) surface thermometer recordings; JRA-55 and ERA5 are meteorological reanalyses.

Temperature data from MetOffice.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Observed temperature over the upper 200 m of the water column along the Kola section in the Barents Sea.

Temperature data from PINRO and ICES.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Top: Latitudinal change in global, annual mean land surface temperature (°C) since 1850 relative to the 1961-1990 mean. The green contours indicate 1, 2 and 3 °C warming relative to the 1961-1990 mean. Bottom: As above, but for the combined global land and ocean surface. White mask indicate no data.

Land surface temperature from Climate Research Unit. Combined land and ocean surface temperature from the UK Met Office Hadley Centre.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Latitudinal change in modelled global, annual mean land and sea surface temperature (°C) since 1850 relative to the 1961-1990 mean. For reference, the green line shows the year 2020. The thick black contours mark the 2°C, 4°C, 6°C,... warming.

Top panel: Based on the business-as-usual scenario RCP8.5. Bottom: Based on the two-degree warming scenario RCP2.6.

Data from the Coupled Model Intercomparison Project Phase 5, as used in Medhaug and Drange (2015).

Land surface temperature from Climate Research Unit. Combined land and ocean surface temperature from the UK Met Office Hadley Centre.

Note: Errors may occur since all figures are automatically updated with only sporadic checking.
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Klimagassutslipp i Norge i millioner tonn CO₂-ekvivalenter per år fordelt på CO₂ (brun farge) og alle andre klimagassutslipp (grå farge). Hvitstiplet linje viser 1990-utslippene av CO₂. Prosentvis endring fra 1990 for CO₂ (brun tekst), alle ander klimagasser (grå) og de totale klimagassutslippene (svart) er vist til høyre i figuren. Prosentvis endring er basert på faktiske utslipp (svarte kurver).

Datakilder (sorte kurver) er fra Global Carbon Project for perioden 1959-1972 (http://www.globalcarbonproject.org/carbonbudget/18/data.htm), Statens forurensningstilsyn (SFT) for 1973-1989 (http://www.miljodirektoratet.no/old/klif/publikasjoner/luft/1840/ta1840.pdf) og Statistisk sentralbyrå (https://www.ssb.no/statbank/table/08940) etter 1990.
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Som over, men med utslippsbaner som med 67 prosent sannsynlighet er i tråd med 1,5- og 2-gradersmålene (basert på Global Carbon Budget https://www.globalcarbonproject.org, og antatt likt prosetvist kutt for alle stater). Stolpen markert ved år 2030 viser 55 prosents kutt relativt til 1990-utslipp (som er politiske målsetninger for EU og Norge).

Datakilder (sorte kurver) er fra Global Carbon Project for perioden 1959-1972 (http://www.globalcarbonproject.org/carbonbudget/18/data.htm), Statens forurensningstilsyn (SFT) for 1973-1989 (http://www.miljodirektoratet.no/old/klif/publikasjoner/luft/1840/ta1840.pdf) og Statistisk sentralbyrå (https://www.ssb.no/statbank/table/08940) etter 1990.
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