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Annual Review of Physical Chemistry

Volume 74, 2023

Isotope Effects and the Atmosphere

Abstract

Chemical physics plays a large role in determining the isotopic compositions of gases in Earth's atmosphere, which in turn provide fundamental insights into the sources, sinks, and transformations of atmospheric gases and particulates and their influence on climate. This review focuses on the kinetic and photolysis isotope effects relevant to understanding the isotope compositions of atmospheric ozone, carbon dioxide, methane, nitrous oxide, and other gases and their historical context. The discussion includes non-mass-dependent isotope compositions of oxygen-containing species and a brief overview of the recent growth of clumped isotope measurements at natural isotopic abundances, that is, of molecules containing more than one rare isotope. The intention is to introduce chemistry researchers to the field of using isotope compositions as tracers of atmospheric chemistry and climate both today and back in time through ice and rock records and to highlight the outstanding research questions to which experimental and theoretical physical chemists can contribute.

Keyword(s): 17O anomaly, atmospheric chemistry, climate, isotope effects, mass-independent fractionation, MIF, ozone
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2023-04-24
2024-04-27
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Isotope Effects and the Atmosphere
Annual Review of Physical Chemistry 74, 439 (2023); https://doi.org/10.1146/annurev-physchem-061020-053429
/content/journals/10.1146/annurev-physchem-061020-053429
/content/journals/10.1146/annurev-physchem-061020-053429
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