Results 11 to 20 of about 3,737,177 (309)

Archean kerogen as a new tracer of atmospheric evolution: Implications for dating the widespread nature of early life. [PDF]

Sci Adv, 2018
Abundant ancient air in Archean kerogen reveals temporal atmospheric Xe evolution, providing a dating tool for early organics. Understanding the composition of the Archean atmosphere is vital for unraveling the origin of volatiles and the environmental ...
Bekaert DV, Broadley MW, Delarue F, Avice G, Robert F, Marty B.   +5 more
europepmc   +2 more sources

Tracing the fate of carbon and the atmospheric evolution of Mars. [PDF]

Nat Commun, 2015
The climate of Mars likely evolved from a warmer, wetter early state to the cold, arid current state. However, no solutions for this evolution have previously been found to satisfy the observed geological features and isotopic measurements of the ...
Hu R, Kass DM, Ehlmann BL, Yung YL.
europepmc   +3 more sources

Geophysical and Atmospheric Evolution of Habitable Planets [PDF]

Astrobiology, 2010
The evolution of Earth-like habitable planets is a complex process that depends on the geodynamical and geophysical environments. In particular, it is necessary that plate tectonics remain active over billions of years. These geophysically active environments are strongly coupled to a planet's host star parameters, such as mass, luminosity and activity,
Lammer, Helmut, Selsis, Franck, Chassefière, Eric, Breuer, Doris, Griessmeier, Jean-Mathias, Kulikov, Yuri N., Erkaev, Nikolai V., Khodachenko, Maxim L., Biernat, Helfried K., Leblanc, François, Kallio, Esa, Lundin, Richard, Westall, Frances, Bauer, Siegfried, Beichman, Charles, Danchi, William, Eiroa, Carlos, Fridlund, Malcolm, Gröller, Hannes, Hanslmeier, Arnold, Hausleitner, Walter, Henning, Thomas, Herbst, Tom, Kaltenegger, Lisa, Léger, Alain, Leitzinger, Martin, Lichtenegger, Herbert I. M., Liseau, René, Lunine, Jonathan, Motschmann, Uwe, Odert, Petra, Paresce, Francesco, Parnell, John, Penny, Alan, Quirrenbach, Andreas, Rauer, Heike, Röttgering, Huub, Schneider, Jean, Spohn, Tilman, Stadelmann, Anja, Stangl, Günter, Stam, Daphne, Tinetti, Giovanna, White, Glenn J.   +43 more
openaire   +6 more sources

Aerosol Optical Tweezers Constrain the Morphology Evolution of Liquid-Liquid Phase-Separated Atmospheric Particles

CheM, 2020
Summary Chemical models of atmospheric particles are vital in understanding the role of aerosol particles in atmospheric chemistry, air pollution, human health, and climate change.
Ryan Sullivan, Kyle Gorkowski, Neil Mcpherson Donahue   +2 more
exaly   +2 more sources

Atmospheric Evolution

, 2017
34 pages, 3 figures, 2 tables.
C. Goldblatt
openaire   +3 more sources

Chemical evolution of atmospheric organic carbon over multiple generations of oxidation

Nature Chemistry, 2018
The evolution of atmospheric organic carbon as it undergoes oxidation has a controlling influence on concentrations of key atmospheric species, including particulate matter, ozone and oxidants.
Luping Su, Daniel A Knopf, Timothy B Onasch   +2 more
exaly   +2 more sources

Role of the Ionosphere for the Atmospheric Evolution of Planets

Astrobiology, 2007
We have synthesized current understanding, mainly observations, with regard to ion escape mechanisms to space from the ionosphere and exosphere of Titan and Earth-type planets, with the intent to provide an improved input for models of atmospheric ...
Masatoshi Yamauchi, JAN-ERIK Wahlund
exaly   +2 more sources

Atmospheric Escape Processes and Planetary Atmospheric Evolution [PDF]

Journal of Geophysical Research - Space Physics, 2020
The habitability of the surface of any planet is determined by a complex evolution of its interior, surface, and atmosphere. The electromagnetic and particle radiation of stars drive thermal, chemical, and physical alteration of planetary atmospheres ...
G. Gronoff, P. Arras, S. Baraka, J. Bell, G. Cessateur, O. Cohen, S. Curry, J. Drake, M. Elrod, J. Erwin, K. Garcia‐Sage, C. Garraffo, A. Glocer, N. Heavens, K. Lovato, R. Maggiolo, C. Parkinson, C. Simon Wedlund, D. Weimer, W. Moore   +19 more
semanticscholar   +1 more source

Unified Simulations of Planetary Formation and Atmospheric Evolution: Effects of Pebble Accretion, Giant Impacts, and Stellar Irradiation on Super-Earth Formation [PDF]

Astrophysical Journal, 2020
A substantial number of super-Earths have been discovered, and atmospheres of transiting super-Earths have also been observed by transmission spectroscopy.
M. Ogihara, Y. Hori
semanticscholar   +1 more source

Using Multi-Platform Satellite Observations to Study the Atmospheric Evolution of Brown Carbon in Siberian Biomass Burning Plumes

Remote Sensing, 2022
A bulk of evidence from in situ observations and lab experiments suggests that brown carbon (light-absorbing organic compounds in particles) can provide a significant yet highly variable contribution to the overall light absorption by aerosol particles ...
I. Konovalov, N. A. Golovushkin, M. Beekmann, S. Turquety   +3 more
semanticscholar   +1 more source