Journal article

Some Influences of Background Flow Conditions on the Generation of Turbulence due to Gravity Wave Breaking above Deep Convection

Todd P Lane, Robert D Sharman

JOURNAL OF APPLIED METEOROLOGY AND CLIMATOLOGY | AMER METEOROLOGICAL SOC | Published : 2008

Abstract

Deep moist convection generates turbulence in the clear air above and around developing clouds, penetrating convective updrafts and mature thunderstorms. This turbulence can be due to shearing instabilities caused by strong flow deformations near the cloud top, and also to breaking gravity waves generated by cloud-environment interactions. Turbulence above and around deep convection is an important safety issue for aviation, and improved understanding of the conditions that lead to out-of-cloud turbulence formation may result in better turbulence avoidance guidelines or forecasting capabilities. In this study, a series of high-resolution two- and three-dimensional model simulations of a seve..

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Grants

Awarded by NASA CAN


Awarded by Australian Research Council Discovery Project


Funding Acknowledgements

This study was funded in part by the FAA Aviation Weather Research Program, by NASA CAN Contract NNS06AA61A, by a University of Melbourne Early Career Research Grant, and by an Australian Research Council Discovery Project (DP0770381). The views expressed are those of the authors and do not necessarily represent the official policy or position of the FAA. Thank yous are given to Drs. Terry Clark and Bill Hall for their assistance with the numerical model, to Dr. Stan Trier for his review of a draft version of this manuscript, and to the three anonymous reviewers for their useful comments.