atmospheric concentrations, definition of
- Atmospheric Concentrations
This is usually the quantity of greenhouse gases relative to the global volume of the atmosphere, expressed in parts per million (ppm). Atmospheric concentrations are often cited for carbon dioxide (CO2) alone or for CO2 equivalents, in which case they are adjusted to reflect all greenhouse gases. Rising atmospheric concentrations can occur even with unchanged levels of annual greenhouse gas emissions.
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atmospheric concentrations definition.
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