Data has been measured at Mauna Loa Observatory, Hawaii as it constitutes the longest record of direct carbon dioxide measurements in the atmosphere. CO₂ expressed as a mole fraction in dry air, micromol/mol, abbreviated as ppm. Open this statistic in... Spanish Citation formats Citation...
The Waliguan observatory took part in the World Meteorological Organization's Global Atmosphere Watch program, along with 30 other participants. The program's 2021 global greenhouse gases bulletin, issued in October, said the carbon dioxide concentration was 415.7 ppm, slightly lower than that gauged ...
Many efforts have been made to capture CO2 from coal-fired power plants, as well as to reduce the amounts of excess CO2 in the atmosphere to around 400 ppm. However, this is not a simple task, particularly in the lower pressure region than 1000 ppm. This is because the CO2 molecule ...
(W/m2/ppm); for positive values the flux is directed from the atmosphere into the ocean (d) regression map of spring precipitation rate on the SLP time series shown in panel b ([kg/(m2 × s)/Pa] × 106); the dominant North Atlantic SLP mode is also shown (solid black ...
Atmospheric CO2has been increasing since the industrial revolution from a background of ~280 ppm, reaching 411 ppm in 2019. The mPWP is often cited as being the last time CO2levels were as high as today13, although we note methane and other greenhouse gases remain poorly constrained and may...
Surplus CO2 is removed from the atmosphere by natural sinks at rate, proportional to the surplus CO2 concentration. This conclusion is rigorously proven.
Roughly a third (~30 ppm) of the carbon dioxide (CO2) that entered the ocean during ice ages is attributed to biological mechanisms. A leading hypothesis for the biological drawdown of CO2 is iron (Fe) fertilisation of the high latitudes, but modellin
In 2017, the concentrations of the three major GHGs, namely carbon dioxide, methane, and nitrous oxide in the atmosphere were 405.5 ppm, 1859 ppb, and 329.9 ppb, respectively2, which were approximately 46%, 157%, and 22% higher, respectively, than the levels before widespread industrialization...
To confirm that CO2 is the source of carbon in photolysis, isotopic labeling experiments were performed under an atmosphere of 13CO2. The GC–MS analysis of the gaseous products shows a diagnostic peak of 13CO (Fig. 6). It reveals that CO is derived from CO2 reduction rather than ...