edu.ucar.opensky::articles:24775 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-24T23:00:41.914363 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7tq6505 Large-scale forcing impact on the development of shallow convective clouds revealed from LASSO large-eddy simulations 2021-10-27T00:00:00Z publication https://n2t.org/ark:/85065/d7tq6505 https://doi.org/10.1029/2021JD035208 Shin, Hyeyum Hailey author Xue, Lulin author Li, Weiwei author Firl, Grant author D'Amico, Daniel Frank author Muñoz-Esparza, Domingo author Ek, Michael B. author Chu, Y. author Wang, Z. author Gustafson, W. I. author Vogelmann, A. M. author UCAR/NCAR - Library publisher Real-world large-eddy simulations (LES) are driven by time-varying large-scale forcings (LSF) -- e.g., temperature advection, moisture advection, and subsidence -- derived from large-scale weather models. This study investigates the impact of the uncertainty in LSF on real-world LES in terms of the development of shallow convection at the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) atmospheric observatory for the June 11, 2016 case using LES provided by the U.S. Department of Energy's LES ARM Symbiotic Simulation and Observation (LASSO) activity. The LASSO data set provides an ensemble of LES for the selected case, which consists of LES runs that were driven by different LSF. The two contrasting LES runs investigated here generate different types of convective clouds, i.e., nonprecipitating shallow clouds and precipitating cumulus congestus, mainly due to the difference of LSF in temperature advection in the free troposphere. The temperature advection modulates the strength of the capping inversion and therefore the buoyancy of the air parcels rising from the atmospheric boundary layer (ABL). The inversion, together with large-scale updrafts, controls the penetration of the ABL thermals into the free troposphere, leading to cumulus congestus in the case of a weaker inversion. In contrast, clouds remain shallow in the case of a strong inversion. Differences between the two simulations are amplified over time, as mixed-phase clouds are formed near the top of the congestus in the weaker inversion case. This high dependency of LES results to LSF stresses the importance of accurate LSF by large-scale models to real-world LES simulations. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2021 American Geophysical Union. None eng geoscientificInformation