Generating a stratocumulus-like cloud top in a convection-cloud chamber

Area of Science:

• Atmospheric Science
• Cloud Physics
• Fluid Dynamics

Background:

• Stratocumulus clouds significantly impact Earth's weather and energy balance.
• Cloud top entrainment is critical but poorly understood due to observational and simulation resolution limits.

Purpose of the Study:

• To numerically demonstrate a novel convection-cloud chamber's ability to replicate stratocumulus cloud top entrainment.
• To validate the chamber design for studying atmospheric boundary layer processes.

Main Methods:

• Numerical simulations of a convection-cloud chamber with controlled sidewall and surface temperatures.
• Analysis of turbulent kinetic energy profiles and budgets.
• Observation of inhomogeneous mixing at the simulated cloud top.

Main Results:

• The chamber design can generate a steady-state cloud with a realistic entrainment interfacial layer.
• Specific temperature controls on sidewalls and surfaces create a cloud top temperature inversion.
• Simulated turbulent kinetic energy dynamics resemble those in natural convective boundary layers.

Conclusions:

• The proposed convection-cloud chamber design is scientifically valuable for studying cloud entrainment.
• The chamber provides a controlled laboratory environment to investigate complex atmospheric phenomena.
• Findings support the construction and use of tall convection-cloud chambers for advancing cloud physics research.