Daily Report on Climate (1).

This is the first of my daily reports on climate. Today is Tuesday 12th September 2023, and the atmospheric CO2 level for August of this year was 419.68 ppm = 813.3 mg/m^3 = 3,275.317 GtCO2 (billion tonnes of CO2). The Keeling Curve recorded an atmospheric CO2 level of 418.4 ppm on the 7th September.

This level of CO2 corresponds to 1.2356°C of global warming over the 1750 pre-industrial Holocene norm, given an equilibrium climate sensitivity of 3°C. This does not take account of any other greenhouse gases.

Copernicus claims that global warming reached 1.23°C in August 2023. In fact, by their own account, as can be seen from the graph on their website, it reached 1.52°C, above the 2015 Paris Agreement target of 1.5°C. The difference can be accounted for by other greenhouse gases, such as methane (CH4) and nitrous oxide (N2O).

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