Climate Report for March 2024.
Today is Sunday 24th March 2024. The latest daily atmospheric CO2 level reading from CO2 Earth is 425.48 ppm, for the 22nd March, which compares with 420.64 ppm for the 22nd March 2023, an increase of 4.84 ppm = 1.15% p.a. The latest daily atmospheric CO2 level reading from the Keeling Curve is also for the 22nd March, and is 425.28 ppm. The monthly average for February 2024, according to the NOAA's Global Monitoring Laboratory , was 424.55 ppm, compared to 420.3 ppm a year earlier, an increase of 4.25 ppm = 1.01% p.a. The NOAA has recorded nineteen daily CO2 readings so far this month at the Mauna Loa Observatory in Hawaii, with an average of 425.486 ppm = 824.5 mg/m^3 = ~3,320.63 GtCO2. The Bloomberg Carbon Clock , meanwhile, has reached 424.63 ppm of CO2 in the atmosphere. Whatever its precise value, atmospheric CO2 is now much higher than at any time in the past 805,000 years (Yamamoto, M. et al , Nature Geoscience , 31st March 2022) and, indeed, in the last 3.3 million ye