contributor author | Rotunno, Richard | |
contributor author | Klemp, Joseph B. | |
date accessioned | 2017-06-09T16:03:46Z | |
date available | 2017-06-09T16:03:46Z | |
date copyright | 1982/02/01 | |
date issued | 1982 | |
identifier issn | 0027-0644 | |
identifier other | ams-60019.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4200643 | |
description abstract | In the present investigation we propose a simple theory to explain how a veering environmental wind shear vector can cause an initially symmetric updraft to grow preferentially to the right of the shear vector and acquire cyclonic rotation. The explanation offered is based on linear theory which predicts that interaction of the mean shear with the updraft produces favorable vertical pressure gradients along its right flank. To asses the validity of linear theory for large-amplitude updrafts, the three-dimensional, shallow, anelastic equations are numerically integrated using a simple parameterization for latent heating within a cloud and the linear and nonlinear forcing terms are separately analyzed. These results suggest that although the nonlinear effects strongly promote splitting of the updraft, the linear forcing remains the dominant factor in preferentially enhancing updraft growth on the right flank. We believe this differential forcing is a major contributor to the observed predominance of cyclonically rotating, right moving storms. | |
publisher | American Meteorological Society | |
title | The Influence of the Shear-Induced Pressure Gradient on Thunderstorm Motion | |
type | Journal Paper | |
journal volume | 110 | |
journal issue | 2 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(1982)110<0136:TIOTSI>2.0.CO;2 | |
journal fristpage | 136 | |
journal lastpage | 151 | |
tree | Monthly Weather Review:;1982:;volume( 110 ):;issue: 002 | |
contenttype | Fulltext | |