Jun 25, 2025 · Carbon dioxide (CO 2) is the largest contributor to global warming and ocean acidification. It contributes about 66% of the warming influence of all human-emitted GHGs—more …

Dec 5, 2025 · The graphs show monthly mean carbon dioxide measured at Mauna Loa Observatory, Hawaii. The carbon dioxide data on Mauna Loa constitute the longest record of direct measurements …

May 21, 2025 · Each year, human activities release more carbon dioxide into the atmosphere than natural processes can remove, causing the amount of carbon dioxide in the atmosphere to increase. …

Jun 13, 2022 · This is a measurement of carbon dioxide millimoles per liter of blood. The CO2 blood test results tell you whether the amount of carbon dioxide in your blood is within the typical range. A …

Oct 1, 2024 · Doctors use a simple blood test to determine typical or atypical CO2 levels in the body. Learn about the CO2 blood test, and how to interpret the results, here.

Atmospheric CO 2 concentration measured at Mauna Loa Observatory in Hawaii from 1958 to 2023 (also called the Keeling Curve). The rise in CO 2 over that time period is clearly visible. The …

Sep 25, 2025 · This animated graph shows CO2 levels from an Antarctic ice core in combination with the observations from Mauna Loa Observatory. This extends the record back through Earth’s last …

Continual updates of daily CO2 levels recorded at the Mauna Loa Observatory in Hawaii. The page features NOAA MLO data and charts with charts and links for Scripps MLO data.

Carbon dioxide measurements, data, and interactive charts showing the increase in atmospheric carbon dioxide over time.

Nov 17, 2025 · 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 data come from a …