Beyond bulk entrainment and detrainment rates: A new framework for diagnosing mixing in cumulus convection
Article first published online: 1 NOV 2012
©2012. American Geophysical Union. All Rights Reserved.
Geophysical Research Letters
Volume 39, Issue 21, November 2012
How to Cite
2012), Beyond bulk entrainment and detrainment rates: A new framework for diagnosing mixing in cumulus convection, Geophys. Res. Lett., 39, L21803, doi:10.1029/2012GL053992., and (
- Issue published online: 1 NOV 2012
- Article first published online: 1 NOV 2012
- Manuscript Revised: 5 OCT 2012
- Manuscript Accepted: 5 OCT 2012
- Manuscript Received: 27 SEP 2012
- cloud models;
- convective parameterization;
- cumulus convection
 A new framework for diagnosing mixing in cumulus convection is proposed, where the vertical evolution of the cloud mass flux distribution as a function of given parcel properties is viewed as a mapping process. Matrices that characterize this mapping process are constructed using a Lagrangian particle dispersion model embedded in a Large Eddy Simulation. Extending previous use of LES-diagnosed bulk entrainment and detrainment rates to test bulk plume models, the construction of these mapping matrices from LES provides a reference, against which multiple-parcel models can be compared. The framework is further applied to diagnose the response of shallow cumuli to a small temperature perturbation.