Airborne fraction

From Glossary of Meteorology

airborne fraction

The fractional amount of carbon dioxide, CO2, that remains in the gas phase relative to a given increase in the total amount of CO2 (atmosphere and ocean combined).

The relatively high solubility of CO2 in water causes it to partition more favorably in the oceans, and so any potential atmospheric increase is buffered.

Copyright 2022 American Meteorological Society (AMS). For permission to reuse any portion of this work, please contact Any use of material in this work that is determined to be “fair use” under Section 107 of the U.S. Copyright Act (17 U.S. Code § 107) or that satisfies the conditions specified in Section 108 of the U.S.Copyright Act (17 USC § 108) does not require AMS’s permission. Republication, systematic reproduction, posting in electronic form, such as on a website or in a searchable database, or other uses of this material, except as exempted by the above statement, require written permission or a license from AMS. Additional details are provided in the AMS Copyright Policy statement.