Daily Climate Report (3).

Today is Thursday 14th September 2023. The atmospheric CO2 level for 13th September 2023 was 418.69 ppm = 811.3 mg/m^3 = 3,267.591 GtCO2, an increase of 0.603% p.a. over 13th September 2022 (416.18 ppm).

The Keeling Curve has a reading for the 13th September of 418.17 ppm = 810.3 mg/m^3 = 3,263.532 GtCO2.

The average of the two readings is 418.43 ppm. Given an equilibrium climate sensitivity of 3°C, that yields global warming, since the year 1750 (pre-Industrial Revolution, when atmospheric CO2 was at 278 ppm), of 1.226665°C. The equation employed is 3°C × logn(418.43/278).

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