Climate Report for November, 2023.

Today is Thursday 30th November 2023. The NOAA Global Monitoring Laboratory (GML) recorded a CO2 level of 420.59 ppm for the 28th November, and the Keeling Curve one of 421.24 ppm for the 29th.

Although still below the peak of 424.76 ppm recorded by the GML on 29th May of this year, November's average is back above 420 ppm.

The NOAA's Annual Greenhouse Gas Index (AGGI) in 2022 was 1.49, or 523 ppm CO2equivalent. They haven't published one for this year yet, but it will be higher. The details of their calculations are here.  

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