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Your search keyword '"Emmanuel Marcq"' showing total 2 results
Start Over Author "Emmanuel Marcq" Publisher american astronomical society
2 results on '"Emmanuel Marcq"'

1. The Need for Ground-Based Observations of Venus

Author

Thomas Navarro, Glenn S. Orton, Javier Peralta, Emilie Royer, Thomas Widemann, Brad J. Sandor, Yeon Joo Lee, Kevin McGouldrick, Candace Gray, Emmanuel Marcq, Arnaud Mahieux, Toru Kouyama, Kunio M. Sayanagi, and Eliot F. Young

Subjects
biology, Venus, biology.organism_classification, Geology, Astrobiology
Published
2021

2. WATER FORMATION IN THE UPPER ATMOSPHERE OF THE EARLY EARTH

Author

Nathalie Carrasco, Emmanuel Marcq, Benjamin Fleury, Ludovic Vettier, Anni Määttänen, PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
planets and satellites: atmospheres, [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph], Physics, Astrochemistry, astrochemistry, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], chemistry.chemical_element, Earth, Astronomy and Astrophysics, Context (language use), Early Earth, Atmospheric sciences, Nitrogen, Trace gas, Troposphere, Atmosphere, chemistry.chemical_compound, chemistry, 13. Climate action, Space and Planetary Science, Carbon dioxide, Astrophysics::Earth and Planetary Astrophysics, Physics::Atmospheric and Oceanic Physics
Abstract

International audience; 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.

Published
2015

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