Nitrogen-enhanced greenhouse warming on early Earth
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If Archean pN2 was about half of today, a few kelvin would be lost from the greenhouse effect.
“If Archean pN2 was about half of today, a few kelvin would be lost from the greenhouse effect (143).”
From The Archean atmosphere (2020) · cites this paper as [143]
In the Hadean, pN2 started high and then diminished.
“In the Hadean, pN2 either started high and then diminished (143) or was initially low if nitrogen partitioned into a very reducing magma ocean (39).”
From The Archean atmosphere (2020) · cites this paper as [143]
With a pCO2 of 10^-2 bar at 2.5 billion years ago, a pN2 of 2 bar would be needed to counter the fainter Sun.
“and that with a pCO 2 of 10 -2 bar at 2.5 billion years ago, a pN 2 of 2 bar would be needed to counter the fainter Sun (Goldblatt et al. 2009).”
From The young Sun's XUV-activity as a constraint for lower CO2-limits in the Earth's Archean atmosphere (2021) · cites this paper as Goldblatt et al. 2009
A higher surface pressure of N2 at 2.5 billion years ago would have enhanced the greenhouse effect through pressure broadening of the absorption lines of greenhouse gases.
“It has been suggested that 2.5 billion years ago, a higher surface pressure of N 2 would have enhanced the greenhouse effect through pressure broadening of the absorption lines of greenhouse gases”
From The young Sun's XUV-activity as a constraint for lower CO2-limits in the Earth's Archean atmosphere (2021) · cites this paper as Goldblatt et al. 2009
Most of Earth's carbon and at least half of Earth's nitrogen are stored in rocks; once these geological reservoirs are accounted for, Venus and Earth have roughly the same amount of both elements.
“However, most of Earth's carbon (Zhang and Zindler, 1993) and at least half of Earth's nitrogen (Goldblatt et al., 2009) are stored in rocks; once these geological reservoirs are accounted for, Venus and Earth have roughly the same amount of both elements.”
From The Astrobiology Primer v2.0 (2016) · cites this paper as Goldblatt et al., 2009
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- Authors
- Goldblatt, C., Claire, M. W., Lenton, T. M., Matthews, A. J., Watson, A. J., & Zahnle, K. J.
- Affiliations
- University of East Anglia (GB)
- University of Washington (US)
- Ames Research Center (US)
- Corresponding author
- Goldblatt, Colin
- ORCID
- Venue
- Nature Geoscience
- Published
- 2009-11-15
- Volume
- 2
- Issue
- 12
- Pages
- 891-896
- ISSN
- 1752-0894 (ISSN-L)
- 1752-0908
- OpenAlex
- W2132178232
- Cited by
- 291
- References
- 53
- Citations by year
- 2026: 7 · 2025: 18 · 2024: 9 · 2023: 19 · 2022: 16 · 2021: 18 · 2020: 31 · 2019: 16 · 2018: 23 · 2017: 15 · 2016: 26 · 2015: 22 · 2014: 13 · 2013: 27 · 2012: 13
- FWCI
- 5.21
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Geoscience (publishedVersion)
- UEA Digital Repository (University of East Anglia) (submittedVersion)
- Funders
- Met Office
- Natural Environment Research Council (NE/F001657/1)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Earth Systems and Cosmic Evolution
- Keywords
- faint young Sun paradox, early Earth climate, atmospheric nitrogen, greenhouse effect, mantle nitrogen, atmospheric CO2, atmospheric methane
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