Modeling Noncondensing Compositional Convection for Applications to Super-Earth and Sub-Neptune Atmospheres
The Astrophysical Journal American Astronomical Society 961:1 (2024) 35-35
Abstract:
Abstract Compositional 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 and the final atmospheric temperature profile. In this work, we employ 3D convection-resolving simulations using Cloud Model 1 (CM1) to gain a fundamental understanding of how compositional variation influences convection and the final atmospheric state of exoplanet atmospheres. We perform 3D initial value problem simulations of noncondensing compositional convection for Earth-air, H 2 , and CO 2 atmospheres. Conventionally, atmospheric convection is assumed to mix the atmosphere to a final, marginally stable state defined by a unique temperature profile. However, when there is compositional variation within an atmosphere, a continuous family of stable end states is possible, differing in the final state composition profile. Our CM1 simulations are used to determine which of the family of possible compositional end states is selected. Leveraging the results from our CM1 simulations, we develop a dry convective adjustment scheme for use in general circulation models (GCMs). This scheme relies on an energy analysis to determine the final adjusted atmospheric state. Our convection scheme produces results that agree with our CM1 simulations and can easily be implemented in GCMs to improve modeling of compositional convection in exoplanet atmospheres.Detection and Tracking of Space Debris in Cislunar Environment - A Phase 0 Mission Design
Curran Associates (2024) 1188-1204
LIRIS – Lunar Infrared Imaging System for High Resolution Volatile Mapping, a Small Satellite to Support Science and Exploration Missions
Curran Associates (2024) 121-128
Relationships between HCl, H2 O, aerosols, and temperature in the Martian atmosphere Part II: quantitative correlations
University of Oxford (2024)
Abstract:
NB: this dataset has now been SUPERSEDED by the version at https://ora.ox.ac.uk/objects/uuid:31ee4ec6-ad9c-4804-be86-da5aba057fd2.
Data generated for and supporting the Publication: Relationships between HCl, H2 O, aerosols, and temperature in the Martian atmosphere Part I: climatological outlook for the Journal of Geophysics Research.
Relationships between HCl, H2 O, aerosols, and temperature in the Martian atmosphere Part I: climatological outlook
University of Oxford (2024)