Tuesday, December 5, 2023

November global surface TempLS up 0.061°C from October.

The TempLS FEM anomaly (1961-90 base) was 1.267°C in November, up from 1.206°C in October. It was by far the warmest November in the record by 0.337°C, ahead of 0.93°C in 2015, and it was very nearly the warmest month of any kind, after last September at 1.285°C. The NCEP/NCAR reanalysis base index rose by 0.09°C.

The average for 2023 to date is 0.995°C, well ahead of 2016 at 0,855°C. I'll show again the table of months in descending order of warmth:

Here is the corresponding stacked graph, showing how much hotter recent months have been

 Most of the world was warm, with the main cool spots being Scandinavia and East Antarctica.

Here is the temperature map, using now the FEM-based map of anomalies.

As always, the 3D globe map gives better detail. There are more graphs and a station map in the ongoing report which is updated daily.

This post is part of a series that has now run since 2011. The TempLS mesh data is reported here, and the recent history of monthly readings is here. Unadjusted GHCN is normally used, but if you click the TempLS button there, it will show data with adjusted, and also with different integration methods. There is an interactive graph using 1981-2010 base period here which you can use to show different periods, or compare with other indices. There is a general guide to TempLS here.

The reporting cycle starts with the TempLS report, usually about the 8th of the month. Then when the GISS result comes out, usually about the 15th, I discuss it and compare with TempLS. The TempLS graph uses the FEM solution on a regular near equal area grid on the sphere ; the residuals are displayed more directly using a triangular grid in a WebGL plot here.

A list of earlier monthly reports of each series in date order is here:

  1. NCEP/NCAR Reanalysis report
  2. TempLS report
  3. GISS report and comparison with TempLS


  1. Thanks for the post as always. The addition of the stacked graph is very informative in my opinion; each month, it shows very clearly that it is not only a mere monthly record that is broken, but also how impressive and significant is the rise compared to the previous records.

    1. Thanks. Yes, 2023 certainly stands out at the moment.