Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session L20: Geophysical Fluid Dynamics: Atmospheric I
8:00 AM–10:36 AM,
Monday, November 20, 2023
Room: 146C
Chair: Marco Giometto, Columbia University
Abstract: L20.00003 : Gravity Wave Interactions in the Stratocumulus-Topped Boundary Layer*
8:26 AM–8:39 AM
Presenter:
Arun Balakrishna
(Center for Turbulence Research, Stanford University)
Authors:
Arun Balakrishna
(Center for Turbulence Research, Stanford University)
Hao Fu
(Department of Earth System Science, Stanford University)
Morgan E O'Neill
(Department of Earth System Science, Stanford University)
A hypothesized breakup regime is the effect of buoyancy currents, or internal gravity waves, on the stratocumulus-topped boundary layer (STBL), which are ubiquitous throughout the atmosphere. We study the effect of a gravity wave model forcing the STBL with choices of realistic wave parameters using large-eddy simulation (Cloud Model 1) in an idealized setup over a sea surface of constant temperature and present turbulent statistics and mechanisms by which the cloud layer either decouples from the surface or breaks up entirely.
*This work is supported by the NSF GRFP under Grant No. DGE-1656518. The authors also acknowledge the Stanford Research Computing Center for providing computational resources.
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