Water formation in the upper atmosphere of the early Earth

Benjamin Fleury 1 Nathalie Carrasco 1, 2 Emmanuel Marcq 1 Ludovic Vettier 3 Anni Määttänen 1
1 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
2 IUF - Institut Universitaire de France
3 LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : The water concentration and distribution in the early Earth's atmosphere are important parameters that contribute to the chemistry and the radiative budget of the atmosphere. If the atmosphere above the troposphere is generally considered as dry, photochemistry is known to be responsible for the production of numerous minor species. Here we used an experimental setup to study the production of water in conditions simulating the chemistry above the troposphere of the early Earth with an atmospheric composition based on three major molecules: N2, CO2, and H2. The formation of gaseous products was monitored using infrared spectroscopy. Water was found as the major product, with approximately 10% of the gas products detected. This important water formation is discussed in the context of the early Earth.
Keywords : planets and satellites: atmospheres Earth astrochemistry
Document type :
Journal articles
Complete list of metadatas
https://hal-insu.archives-ouvertes.fr/insu-01176058
Contributor : Catherine Cardon <>
Submitted on : Tuesday, July 14, 2015 - 11:40:36 AM
Last modification on : Friday, January 10, 2020 - 3:42:29 PM

Identifiers

Collections

INSU | CNRS | UPMC | UVSQ | LATMOS | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE | SU-SCIENCES

Citation

Benjamin Fleury, Nathalie Carrasco, Emmanuel Marcq, Ludovic Vettier, Anni Määttänen. Water formation in the upper atmosphere of the early Earth. The Astrophysical Journal, American Astronomical Society, 2015, 807 (2), pp.L29. ⟨10.1088/2041-8205/807/2/L29⟩. ⟨insu-01176058⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

279

Contact

Informations

CCSD