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Observations of scattered light and thermal emission from hot Jupiter exoplanets have suggested the presence of inhomogeneous aerosols in their atmospheres. 3D general circulation models (GCMs) that attempt to model the effects of aerosols…

Earth and Planetary Astrophysics · Physics 2021-03-19 Caleb K. Harada , Eliza M. -R. Kempton , Emily Rauscher , Michael Roman , Isaac Malsky , Marah Brinjikji , Victoria diTomasso

Using a general circulation model (GCM), we investigate trends in simulated hot Jupiter atmospheres for a range of irradiation temperatures (1,500 - 4,000 K), surface gravities (10 and 40 m s-2), and cloud conditions. Our models include…

Earth and Planetary Astrophysics · Physics 2021-02-24 Michael T. Roman , Eliza M. -R. Kempton , Emily Rauscher , Caleb K. Harada , Jacob L. Bean , Kevin B. Stevenson

Cloud formation and magnetic effects are both expected to significantly impact the structures and observable properties of hot Jupiter atmospheres. For some hot Jupiters, thermal ionization and condensation can coexist in a single…

Earth and Planetary Astrophysics · Physics 2024-11-01 Thomas D. Kennedy , Emily Rauscher , Isaac Malsky , Michael T. Roman , Hayley Beltz

Hot Jupiters exhibit large day-night temperature contrasts. Their cooler nightsides are thought to host clouds. However, the exact nature of these clouds, their spatial distribution, and their impact on atmospheric dynamics, thermal…

The atmospheres of ultra-hot Jupiters have been characterized in detail through recent phase curve and low- and high-resolution emission and transmission spectroscopic observations. Previous numerical studies have analyzed the effect of the…

Earth and Planetary Astrophysics · Physics 2022-07-28 Thaddeus D. Komacek , Xianyu Tan , Peter Gao , Elspeth K. H. Lee

Motivated by the observational evidence of inhomogeneous clouds in exoplanetary atmospheres, we investigate how proposed simple cloud distributions can affect atmospheric circulations and infrared emission. We simulated temperatures and…

Earth and Planetary Astrophysics · Physics 2017-11-29 Michael Roman , Emily Rauscher

By reflecting solar radiation and reducing longwave emissions, clouds regulate the earth's radiation budget, impacting atmospheric circulation and cloud dynamics. Given the diurnal fluctuation of shortwave and longwave radiation, a shift in…

Atmospheric and Oceanic Physics · Physics 2017-03-28 Jun Yin , Amilcare Porporato

We present results of 3D hydrodynamical simulations of HD209458b including a coupled, radiatively-active cloud model ({\sc EddySed}). We investigate the role of the mixing by replacing the default convective treatment used in previous works…

Earth and Planetary Astrophysics · Physics 2021-08-11 D. A. Christie , N. J. Mayne , S. Lines , V. Parmentier , J. Manners , I. Boutle , B. Drummond , T. Mikal-Evans , D. K. Sing , K. Kohary

Hot Jupiters have been predicted to have a strong day/night temperature contrast and a hot spot shifted eastward of the substellar point. This was confirmed by numerous phase curve observations probing the longitudinal brightness variation…

Earth and Planetary Astrophysics · Physics 2020-11-18 Vivien Parmentier , Adam P. Showman , Jonathan J. Fortney

Photochemical hazes are expected to form in hot Jupiter atmospheres and may explain the strong scattering slopes and muted spectral features observed in the transmission spectra of many hot Jupiters. Absorption and scattering by…

Earth and Planetary Astrophysics · Physics 2023-08-02 Maria E. Steinrueck , Tommi Koskinen , Panayotis Lavvas , Vivien Parmentier , Sebastian Zieba , Xianyu Tan , Xi Zhang , Laura Kreidberg

Observational studies of exoplanets are suggestive of a ubiquitous presence of clouds. The current modelling techniques used in emission to account for the clouds tend to require prior knowledge of the cloud condensing species and often do…

Earth and Planetary Astrophysics · Physics 2021-07-07 Jake Taylor , Vivien Parmentier , Michael R. Line , Elspeth K. H. Lee , Patrick G. J. Irwin , Suzanne Aigrain

Numerous observational evidence has suggested the presence of active meteorology in the atmospheres of brown dwarfs. A near-infrared brightness variability has been observed. Clouds have a major role in shaping the thermal structure and…

Earth and Planetary Astrophysics · Physics 2022-05-04 Maxence Lefèvre , Xianyu Tan , Elspeth K. H. Lee , R. T. Pierrehumbert

The advent of high-resolution spectroscopy as a method for exoplanet atmospheric characterization has expanded our capability to study non-transiting planets, increasing the number of planets accessible for observation. Many of the most…

Earth and Planetary Astrophysics · Physics 2021-12-22 Isaac Malsky , Emily Rauscher , Eliza M. R. Kempton , Michael Roman , Deryl Long , Caleb K. Harada

Clouds' efficiency at reflecting solar radiation and trapping the terrestrial one is strongly modulated by their diurnal cycle. Much attention has been paid to mean cloud properties due to their critical role in climate projections;…

Atmospheric and Oceanic Physics · Physics 2018-03-06 Jun Yin , Amilcare Porporato

Cloud microphysical parameterizations in atmospheric models describe the formation and evolution of clouds and precipitation, a central weather and climate process. Cloud-associated latent heating is a primary driver of large and…

We present a new two-dimensional, bin-scheme microphysical model of cloud formation in the atmospheres of hot Jupiters that includes the effects of longitudinal gas and cloud transport. We predict cloud particle size distributions as a…

Earth and Planetary Astrophysics · Physics 2024-04-16 Diana Powell , Xi Zhang

We present a computationally efficient 1-D seasonal radiative model, with convective adjustment, of Jupiter's atmosphere. Our model takes into account radiative forcings from the main hydrocarbons (methane, ethane, acetylene), ammonia,…

Earth and Planetary Astrophysics · Physics 2020-11-13 Sandrine Guerlet , Aymeric Spiga , Thierry Fouchet , Hugues Delattre

Deciphering the role of clouds is central to our understanding of exoplanet atmospheres, as they have a direct impact on the temperature and pressure structure, and observational properties of the planet. Super-hot Jupiters occupy a…

Earth and Planetary Astrophysics · Physics 2016-10-18 Hannah R. Wakeford , Channon Visscher , Nikole K. Lewis , Tiffany Kataria , Mark S. Marley , Jonathan J. Fortney , Avi M. Mandell

This paper presents a simple analytical framework for the dynamic response of cirrus to a local radiative flux convergence, expressible in terms of three independent modes of cloud evolution. Horizontally narrow and tenuous clouds within a…

Atmospheric and Oceanic Physics · Physics 2015-06-04 C. T. Schmidt , T. J. Garrett

The daily cloud cycle (DCC) and its response to global warming are critical to the Earth's energy budget, but their radiative effects have not been systematically quantified. Toward this goal, here we analyze the radiation at the top of the…

Atmospheric and Oceanic Physics · Physics 2019-12-13 Jun Yin , Amilcare Porporato
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