Physical science research needed to evaluate the viability and risks of marine cloud brightening

G Feingold, VP Ghate, LM Russell, P Blossey… - Science …, 2024 - science.org
Marine cloud brightening (MCB) is the deliberate injection of aerosol particles into shallow
marine clouds to increase their reflection of solar radiation and reduce the amount of energy …

Designing a convection‐cloud chamber for collision‐coalescence using large‐eddy simulation with bin microphysics

A Wang, M Ovchinnikov, F Yang… - Journal of Advances …, 2024 - Wiley Online Library
Collisional growth of cloud droplets is an essential yet uncertain process for drizzle and
precipitation formation. To improve the quantitative understanding of this key component of …

[HTML][HTML] An Investigation of LES Wall Modeling for Rayleigh–Bénard Convection via Interpretable and Physics-Aware Feedforward Neural Networks with DNS

A Wang, XIA Yang… - Journal of the Atmospheric …, 2024 - journals.ametsoc.org
The traditional approach of using the Monin–Obukhov similarity theory (MOST) to model
near-surface processes in large-eddy simulations (LESs) can lead to significant errors in …

Glaciation of mixed-phase clouds: insights from bulk model and bin-microphysics large-eddy simulation informed by laboratory experiment

A Wang, S Krueger, S Chen… - Atmospheric …, 2024 - acp.copernicus.org
Mixed-phase clouds affect precipitation and radiation differently from liquid and ice clouds,
posing greater challenges to their representation in numerical simulations. Recent …

Cloud droplet size distributions governed by condensation, collision–coalescence, and sedimentation. Part I: Monte Carlo simulations and scaling relations for growth …

J Kuntzleman, SK Krueger… - Journal of the Atmospheric …, 2024 - journals.ametsoc.org
Atmospheric clouds are crucial to weather and climate, and the rate at which droplets collide
and coalesce to form precipitation is one of the fundamental controlling processes. A …

Fast and slow microphysics regimes in a minimalist model of cloudy Rayleigh-Bénard convection

RA Shaw, S Thomas, P Prabhakaran, W Cantrell… - Physical Review …, 2023 - APS
A minimalist model of microphysical properties in cloudy Rayleigh-Bénard convection is
developed based on mass and number balances for cloud droplets growing by vapor …

The Dual Nature of Entrainment-Mixing Signatures Revealed Through Large-Eddy Simulations of a Convection-Cloud Chamber

A Wang, M Ovchinnikov, F Yang… - Journal of the …, 2024 - journals.ametsoc.org
Entrainment of subsaturated air into a cloud can influence its optical and microphysical
properties in various ways, depending on the droplet evaporation and turbulent mixing time …

Cloud microphysical response to entrainment and mixing is locally inhomogeneous and globally homogeneous: Evidence from the lab

JM Yeom, I Helman, P Prabhakaran… - Proceedings of the …, 2023 - National Acad Sciences
Entrainment of dry air into clouds strongly influences cloud optical and precipitation
properties and the response of clouds to aerosol perturbations. The response of cloud …

[HTML][HTML] Detection of small drizzle droplets in a large cloud chamber using ultrahigh-resolution radar

Z Zhu, F Yang, P Kollias, RA Shaw… - Atmospheric …, 2024 - amt.copernicus.org
A large convection–cloud chamber has the potential to produce drizzle-sized droplets, thus
offering a new opportunity to investigate aerosol–cloud–drizzle interactions at a fundamental …

Cloud droplet size distributions governed by condensation, collision–coalescence, and sedimentation. Part II: Analytical expressions for size distribution shape and …

J Kuntzleman, SK Krueger… - Journal of the Atmospheric …, 2024 - journals.ametsoc.org
Droplet growth via condensation and collision–coalescence has been investigated in the
limit of very weak coalescence growth: a collector-mode approximation emerges for …