General info

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.

Please pass an email for a request of additional figures and, of course, in case of errors/inconsistencies/etc...

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

Global CO2 and global surface temperature since 1850

Global, annual mean surface temperature (°C) 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.
Return to top of page.

CO2 globally and from Mauna Loa, Hawaii

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.
Return to top of page.

Global surface temperature, CO2 and solar flares since 1850

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.
Return to top of page.

Global surface temperature since 1850

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.
Return to top of page.

Modelled global surface temperature 1850-2100

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 2018. 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.
Return to top of page.