Hot Jupiter atmospheric flows at high resolution

@article{Menou2020HotJA,
  title={Hot Jupiter atmospheric flows at high resolution},
  author={Kristen Menou},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2020}
}
  • K. Menou
  • Published 1 November 2019
  • Environmental Science, Physics, Geology
  • Monthly Notices of the Royal Astronomical Society
Global circulation models (GCMs) of atmospheric flows are now routinely used to interpret observational data on hot Jupiters. Localized ‘equatorial β-plane’ simulations have revealed that a barotropic (horizontal shear) instability of the equatorial jet appears at horizontal resolutions beyond those typically achieved in global models; this instability could limit wind speeds and lead to increased atmospheric variability. To address this possibility, we adapt the computationally efficient… 

Figures and Tables from this paper

Numerical convergence of hot-Jupiter atmospheric flow solutions

We perform an extensive study of numerical convergence for hot-Jupiter atmospheric flow solutions in simulations employing a setup commonly-used in extrasolar planet studies, a resting state

Variable and Supersonic Winds in the Atmosphere of an Ultrahot Giant Planet

Hot Jupiters (HJs) receive intense irradiation from their stellar hosts. The resulting extreme environments in their atmospheres allow us to study the conditions that drive planetary atmospheric

Storms, Variability, and Multiple Equilibria on Hot Jupiters

Observations of hot-Jupiter atmospheres show large variations in the location of the “hot spot” and the amplitude of spectral features. Atmospheric flow simulations using the commonly employed

Water Ice Cloud Variability and Multi-epoch Transmission Spectra of TRAPPIST-1e

The precise characterization of terrestrial atmospheres with the James Webb Space Telescope (JWST) is one of the utmost goals of exoplanet astronomy in the next decade. With JWST’s impending launch,

Simplified 3D GCM modelling of the irradiated brown dwarf WD 0137−349B

White dwarf–brown dwarf short-period binaries (Porb ≲ 2 h) are some of the most extreme irradiated atmospheric environments known. These systems offer an opportunity to explore theoretical and

Atmospheric Circulation of Tidally Locked Gas Giants with Increasing Rotation and Implications for White Dwarf–Brown Dwarf Systems

Tidally locked gas giants, which exhibit a novel regime of day–night thermal forcing and extreme stellar irradiation, are typically in several-day orbits, implying a modest role for rotation in the

References

SHOWING 1-10 OF 32 REFERENCES

ATMOSPHERIC CIRCULATION OF HOT JUPITERS: A SHALLOW THREE-DIMENSIONAL MODEL

Remote observing of exoplanetary atmospheres is now possible, offering us access to circulation regimes unlike any of the familiar solar system cases. Atmospheric circulation models are being

Shear-driven instabilities and shocks in the atmospheres of hot Jupiters

General circulation models of the atmosphere of hot Jupiters have shown the existence of a supersonic eastward equatorial jet. In this paper, we investigate the effects of compressibility on the

CIRCULATION AND DISSIPATION ON HOT JUPITERS

Many global circulation models predict supersonic zonal winds and large vertical shears in the atmospheres of short-period Jovian exoplanets. Using linear analysis and nonlinear local simulations, we

Temporal Variability in Hot Jupiter Atmospheres

Hot Jupiters receive intense incident stellar light on their daysides, which drives vigorous atmospheric circulation that attempts to erase their large dayside-to-nightside flux contrasts.

Atmospheric Circulation of Hot Jupiters: Insensitivity to Initial Conditions

The ongoing characterization of hot Jupiters has motivated a variety of circulation models of their atmospheres. Such models must be integrated starting from an assumed initial state, which is

EQUATORIAL SUPERROTATION ON TIDALLY LOCKED EXOPLANETS

The increasing richness of exoplanet observations has motivated a variety of three-dimensional (3D) atmospheric circulation models of these planets. Under strongly irradiated conditions, models of

Wave-mean Flow Interactions in the Atmospheric Circulation of Tidally Locked Planets

We use a linear shallow-water model to investigate the global circulation of the atmospheres of tidally locked planets. Simulations, observations, and simple models show that if these planets are

Atmospheric circulation of tidally locked exoplanets: a suite of benchmark tests for dynamical solvers

The rapid pace of extrasolar planet discovery and characterization is legitimizing the study of their atmospheres via three-dimensional numerical simulations. The complexity of atmospheric modelling

Results from a set of three-dimensional numerical experiments of a hot Jupiter atmosphere

We present highlights from a large set of simulations of a hot Jupiter atmosphere, nominally based on HD 209458b, aimed at exploring both the evolution of the deep atmosphere, and the acceleration of

MAGNETIC DRAG ON HOT JUPITER ATMOSPHERIC WINDS

Hot Jupiters, with atmospheric temperatures T ≳ 1000 K, have residual thermal ionization levels sufficient for the interaction of ions with the planetary magnetic field to result in a sizable