2025年1月5日 · The carbon dioxide data on Mauna Loa constitute the longest record of direct measurements of CO 2 in the atmosphere. They were started by C. David Keeling of the …

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 …

NOAA's Daily Global CO2 table shows us atmospheric CO2 phenomena that Charles David Keeling discovered with the high-precesion CO2 measuring instruments and programs he …

2025年1月21日 · The data contains concentrations of carbon dioxide in the atmosphere from hundreds of thousands of years ago through 2021, measured in parts per million (ppm). The …

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, …

2 天之前 · This figure shows the atmospheric increase of CO 2 over 280 ppm in weekly averages of CO 2 observed at Mauna Loa. The value of 280 ppm is chosen as representative of pre …

Human activities have raised the atmosphere’s carbon dioxide content by 50% in less than 200 years. Carbon dioxide (CO 2) is an important heat-trapping gas, also known as a greenhouse …

Atmospheric carbon dioxide (CO₂) concentration is measured in parts per million (ppm).

Preliminary analysis of satellite data shows that, in 2023, the global mean column-averaged atmospheric concentration of CO 2 was around 419.3 ppm for the annual average, which is …