Skip to Main content Skip to Navigation
Journal articles

Water formation in the upper atmosphere of the early Earth

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.
Complete list of metadata

Cited literature [20 references]  Display  Hide  Download
Contributor : Catherine Cardon <>
Submitted on : Wednesday, August 5, 2020 - 2:10:59 PM
Last modification on : Monday, September 13, 2021 - 4:49:44 PM
Long-term archiving on: : Monday, November 30, 2020 - 2:50:23 PM


Publisher files allowed on an open archive



Benjamin Fleury, Nathalie Carrasco, Emmanuel Marcq, Ludovic Vettier, Anni Määttänen. Water formation in the upper atmosphere of the early Earth. The Astrophysical journal letters, Bristol : IOP Publishing, 2015, 807 (2), pp.L29. ⟨10.1088/2041-8205/807/2/L29⟩. ⟨insu-01176058⟩



Record views


Files downloads