Cited by 140Paleontology and Stratigraphy of FossilsOrigins and Evolution of LifeAtmospheric chemistry and aerosols

Stability of ammonia in the primitive terrestrial atmosphere

Kasting, James F.·1982·Journal of Geophysical Research: Oceans

Abstract

A one‐dimensional photochemical model is used to calculate the rate at which ammonia would have been destroyed in the earth's atmosphere for assumed NH3 mixing ratios of 10−8 to 10−4. The calculated NH3 destruction rates are then compared with possible abiotic and biotic sources for ammonia. Abiotic sources were probably sufficient to maintain the NH3 mixing ratio of 10−8 needed for life to have evolved but were too small to sustain the mixing ratios of 10−5 or more necessary to produce significant greenhouse warming. The atmospheric ammonia concentration may have increased during the Archean as a result of biological activities but probably remained below the level required to generate measurable thermal effects.

Integrity signals

Registry

Crossref · 10.1029/jc087ic04p03091

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56 of 56 references verified0 citation errors · 0 not checkable

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  • NH3 levels of 10 to 100 ppmv cannot be sustained against UV photolysis.

    “Ammonia (NH3) levels of 10 to 100 ppmv would provide a greenhouse effect to counteract the faint young Sun (FYS) (14), but these levels of NH3 cannot be sustained against UV photolysis (161).”

    From The Archean atmosphere (2020) · cites this paper as [161]

  • Highly reduced gases such as CH4 or NH3 are dissociated by photolysis due to the high XUV flux of the young Sun and by reactions with OH and O radicals produced from the photolysis of H2O and CO2.

    “Highly reduced gases such as CH 4 or NH 3 are also dissociated by photolysis due to the high XUV flux of the young Sun and by reactions with OH and O radicals produced from the photolysis of H 2 O and CO 2 molecules (Kuhn and Atreya 1979; Kasting 1982; Kasting 1993; Zahnle et al. 2010; Wordsworth 2016).”

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Authors
Kasting, J. F.
Affiliations
Ames Research Center (US)
Corresponding author
Kasting, James F.
Venue
Journal of Geophysical Research: Oceans
Published
1982-04-20
Volume
87
Issue
C4
Pages
3091-3098
ISSN
0148-0227 (ISSN-L)
OpenAlex
W2033191700
Cited by
140
References
58
Citations by year
2026: 4 · 2025: 7 · 2024: 6 · 2023: 4 · 2022: 3 · 2021: 4 · 2020: 8 · 2019: 8 · 2018: 6 · 2017: 4 · 2016: 1 · 2015: 4 · 2014: 4 · 2013: 5 · 2012: 3
FWCI
10.25
Type
journal article
Language
en
Open access
closed
Locations
Journal of Geophysical Research Atmospheres (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Atmospheric chemistry and aerosols
Keywords
ammonia, early Earth atmosphere, atmospheric chemistry, global warming, Archean atmosphere, early Earth, photochemical modeling, atmospheric mixing ratios

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