Globally averaged mole fraction (measure of atmospheric concentration), from 1984 to 2021, of CO2 in parts per million (left), CH4 in parts per billion (centre) and N2O in parts per billion (right)

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Globally averaged mole fraction (measure of atmospheric concentration), from 1984 to 2021, of CO2 in parts per million (left), CH4 in parts per billion (centre) and N2O in parts per billion (right)

© Ocean Cruising Club

$Globally averaged mole fraction (measure of atmospheric concentration), from 1984 to 2021, of CO2 in parts per million (left), CH4 in parts per billion (centre) and N2O in parts per billion (right) photo copyright Ocean Cruising Club taken at Ocean Cruising Club and featuring the Environment class$

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