Units: parts per million (ppm) This table presents the latest, daily average reading for atmospheric CO2 on the planet. Updates happen once a day with few exceptions.

In Earth's atmosphere, carbon dioxide is a trace gas that plays an integral part in the greenhouse effect, carbon cycle, photosynthesis and oceanic carbon cycle. It is one of three main …

2024年4月9日 · Based on the annual report from NOAA’s Global Monitoring Lab, global average atmospheric carbon dioxide was 419.3 parts per million (“ppm” for short) in 2023, setting a …

Note the colors change as the amount of CO 2 rises from 365 parts per million (ppm) in 2002 to over 420 ppm currently. It's important to understand that “parts per million” refers to the …

2024年3月9日 · CO2.Earth connects the general public with the latest data and information for stabilizing earth's atmosphere, climate and living environments.

Average annual atmospheric levels of carbon dioxide (CO₂) reached a record high of 424.61 parts per million (ppm) in 2024. Monthly atmospheric CO₂ concentrations peaked that year in June, …

2025年3月5日 · Data are reported as a dry air mole fraction defined as the number of molecules of carbon dioxide divided by the number of all molecules in air, including CO 2 itself, after …

2025年1月21日 · Atmospheric carbon dioxide (CO₂) concentration is measured in parts per million (ppm). Long-term trends in CO₂ concentrations can be measured at high-resolution using …

2025年3月7日 · CO2 PPM = (0.002 / 10) * 1,000,000 = 200 PPM. FAQs. 1. What is CO2 PPM? CO2 PPM refers to the concentration of carbon dioxide in air, measured in parts per million. 2. …

423.85 ppm CO2 in atmosphere in November 2024 at the Mauna Loa Observatory. Monthly comparison of CO2 levels measured by NOAA & Scripps at Mauna Loa. Plus global averages.