Results 101 to 110 of about 13,757 (226)
Comparing Geochemical and Geodynamical Models of Plume and Ridge Mantle Source Composition
Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.Abstract We use a multidisciplinary approach to investigate how the parameter space of mantle convection affects present‐day mantle composition. We compare 22 forward geodynamical mantle circulation model simulations against 24 variants of a geochemical inversion model of the global radiogenic isotope data set of mantle‐derived lavas.
Paul Béguelin +6 more
wiley +1 more source
Atmospheric Escape and the Evolution of Close-In Exoplanets [PDF]
Annual Review of Earth and Planetary Sciences, 2019 Exoplanets with substantial hydrogen/helium atmospheres have been discovered in abundance, many residing extremely close to their parent stars. The extreme irradiation levels that these atmospheres experience cause them to undergo hydrodynamic atmospheric escape.
openaire +6 more sources
Is the Pale Blue Dot unique? Optimized photometric bands for identifying Earth-like exoplanets
, 2016 The next generation of ground and space-based telescopes will image habitable planets around nearby stars. A growing literature describes how to characterize such planets with spectroscopy, but less consideration has been given to the usefulness of ...
Arney, Giada +6 more
core +1 more source
Boundaries of photosynthesis: adaptations of carbon fixation in extreme environments
FEBS Open Bio, Volume 15, Issue 7, Page 1028-1040, July 2025.Photosynthesis faces challenges from environmental extremes of temperature, pH, and salinity, limiting gas diffusion, modifying membrane fluidity, and destabilizing photochemical and biochemical reactions. Photosynthetic organisms have evolved unique adaptations overcoming these stresses and maintaining their photosynthetic activity.
Pere Aguiló‐Nicolau +3 more
wiley +1 more source
Atmospheric Circulation of Exoplanets
, 2009 We survey the basic principles of atmospheric dynamics relevant to explaining existing and future observations of exoplanets, both gas giant and terrestrial. Given the paucity of data on exoplanet atmospheres, our approach is to emphasize fundamental principles and insights gained from Solar-System studies that are likely to be generalizable to ...
Showman, Adam P. +2 more
openaire +2 more sources
The Astrophysical JournalCompositional convection is atmospheric mixing driven by density variations caused by compositional gradients. Previous studies have suggested that compositional gradients of atmospheric trace species within planetary atmospheres can impact convection ...
Namrah Habib, Raymond T. Pierrehumbert
doaj +1 more source
Global Chemical Transport on Hot Jupiters: Insights from the 2D VULCAN Photochemical Model
The Astrophysical JournalThe atmospheric dynamics of tidally locked hot Jupiters is characterized by strong equatorial winds. Understanding the interaction between global circulation and chemistry is crucial in atmospheric studies and interpreting observations.
Shang-Min Tsai +9 more
doaj +1 more source
Effects of Ultraviolet Radiation on Sub-Neptune Exoplanet Hazes through Laboratory Experiments
The Planetary Science JournalTemperate sub-Neptune exoplanets could contain large inventories of water in various phases, such as water worlds with water-rich atmospheres or even oceans.
Lori Huseby +11 more
doaj +1 more source
Transport of ionizing radiation in terrestrial-like exoplanet atmospheres [PDF]
, 2004 David S. Smith +2 more
openalex +1 more source
Exoplanet atmospheres with GIANO [PDF]
, 2018 Context\ud \ud High-resolution spectroscopy (R ≥ 20 000) at near-infrared wavelengths can be used to investigate the composition, structure, and circulation patterns of exoplanet atmospheres. However, up to now it has been the exclusive dominion of the biggest telescope facilities on the ground, due to the large amount of photons necessary to measure a
Brogi, M. +6 more
openaire +1 more source