Climate data set: NCEI NOAA GlobalTemp

12 juni 2025 by Stephan

Here graphs based on the V6.0 NOAAGlobalTemp dataset created by NOAA/NCEI.

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a centered 10 year average. The reference period is 1901-2000.

Graph with monthly world temperature anomalies as reported by NOAA/NCEI since 1850 compared to the 1971-2000 average, since 1850, plus a 10 year centered average.
This has gone from -0.5 around 1900 to +0.69 now.

Climate data set: Copernicus ERA5

11 juni 2025 by Stephan 1 Comment

Here graphs based on the climate data set created by Copernicus Programme as implemented by ECMWF, supplemented with the data from 1940 to 1978.

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a 10 year centered average.

Graph with monthly world temperature anomalies since 1940 compared to the 1991-2020 period, combined with a 10 year centered average. The 10 year average shows a steady rise from -0.7 to now +0.42.
Highest anomaly reached in September 2023 with +0.9313

Climate data set: NASA GISS

10 juni 2025 by Stephan

Here graphs based on the GISS dataset created by NASA.

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a 10 year average.

Graph with monthly world temperature anomalies as reported by NASA/GISS compared to the 1951-1980 average, since 1880, plus a 10 year moving average.
This has gone from -0.3 around 1900 to +1.0 now.

Then the yearly averages on the monthly anomalies.

Climate data set: UAH

5 juni 2025 by Stephan

Here graphs based on the MSU UAH dataset (satellite) created by John Christy/Roy Spencer.

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a moving 10 year average.

Graph showing the monthly world temperature anomalies since 1979 as published by UAH. Combined with a 10 year moving average. The moving average starts at -0.28 and is now at +0.32.
The monthly values are between -0.61 and +0.105.
The last 5 years it is varying between 0 and +1.05 with last 15 months till December 2024 above +0.6. Now at +0,5.
The reference period is 1991-2020

Climate data set: JMA

14 mei 2025 by Stephan

Here graphs based on the dataset created by the Japan Meteorological Agency.

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a moving 10 year average.

Graph with monthly world temperature anomalies compared to the 1991-2020 average, since 1891, plus a 10 year moving average.
This has gone from -0.8 beginning of 1900 to +0.37 now.

Climate data set: HadCRUT 5

2 mei 2025 by Stephan

Here graphs based on the HadCRUT 5.0.2 dataset created by the Met Office (UK).

Regular updates. Check date in graph.
First graph is on the monthly anomalies plus a moving 10 year average.

Graph with monthly world temperature anomalies compared to the 1961-1990 average, since 1850, plus a 10 year moving average.
This has gone from -0.4 around 1900 to +0.88 now.
Based on HadCRUT5 dataset.

Kyoto full flowering day Cherry Blossom since year 812

5 april 2025 by Stephan

Based on the research done by Aono and Kazui in 2008, by Aono and Saito in 2010 and by Aono in 2012 the historic full flowering days since the year 812 for Kyoto in Japan where gathered.

Yearly we add the new dates and update the graph. The current version is up to date till 2025.

Chart showing count of days after start of the year till first full flowing day of the Cherry Blossom in Kyoto Japan, since 812.
Up till 1900 it varied between 90 and 120. Since 1900 a decline to now an average of 95, with earliest moment in 2023 (March 24th).
For 2024 it was April 5th.
For 2025 it's April 5th.

Global Passenger Air Traffic

15 maart 2025 by Stephan

Based on data from ICAO two graphs on the development of global passenger air traffic per year. First in absolute number (passenger kilometer traveled) for the ICAO members.