Global Temperatures for 2023

December saw a rise in the global average temperature anomaly to 1.27C resulting in a final annual value of 1.13C for the year 2023. This represents an increase of just under 0.3C  since 2022, the warmest year so far (as widely reported). My calculation is based on spherical triangulation and uses GHCN corrected land data and the latest HadCRUT3 sea surface temperature data. It is the same basic data as used by all groups (Berkeley, Hadley/CRU, NASA etc.)

Here is the data for the full year 2023

Annual global temperature anomalies updated for 2023

The monthly data shows just how changeable 2023 really was.

Monthly Temperature Anomalies updated for December 2023

Finally here is an animation showing the temperature distribution on the earth’s surface during December 2023


Temperatures during December 2023.

Note the continuing El Nino and very warm temperatures in USA and Canada, while Antarctica remains cooler than normal.

About Clive Best

PhD High Energy Physics Worked at CERN, Rutherford Lab, JET, JRC, OSVision
This entry was posted in AGW, Climate Change, Hadley, IPCC, NASA, NOAA. Bookmark the permalink.

4 Responses to Global Temperatures for 2023

  1. dougbrodie1 says:

    According to the Met Office HadCRUT 5 dataset the 2023 end-of-year anomaly was 1.46°C:
    I note that neither you nor the Met Office have made any mention of the 2022 Hunga Tonga undersea volcanic eruption, see

    • Clive Best says:

      Actually I think it very likely that the Hunga Tonga eruption is to blame. It blasted vast amounts of water vapour into the stratosphere !
      I also think that there are systematic (correction) errors in the data which favour warmer results.

  2. But that would have to warnm SST quite a bit — see especially the huge spike in AMO. SST changes are primarily subsurface derived if that fast as circulation changes or thermocline changes are rapid.

  3. MarkR says:

    What evidence makes you think there are systematic errors that affect trends? Over what time period and of what sort of magnitude?

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