contributor author | Bader, David C. | |
contributor author | McKee, Thomas B. | |
date accessioned | 2017-06-09T16:08:43Z | |
date available | 2017-06-09T16:08:43Z | |
date copyright | 1992/05/01 | |
date issued | 1992 | |
identifier issn | 0027-0644 | |
identifier other | ams-61944.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4202781 | |
description abstract | The development of the nocturnal boundary layer (NBL) over a sloping plateau upwind of a high mountain barrier is studied with a numerical model and field observations. Six numerical simulations and one observed case are used to describe the effects of wind speed, wind direction, and sunset mixed-layer depth on the NBL structure 6 h after sunset. When there is a component of wind into barrier, a two-layer structure develops. A 75-175-m-deep inversion layer that is topped by a 200-300-m-deep, less stable transition layer extends over the length of the plateau. Shear between the 3?4 m s?1 drainage winds in the inversion layer and the large-scale wind mix cold air vertically to build the transition layer. The inversion layer appears to be relatively insensitive to changes in the external parameters, but transition-layer depth is proportional to wind speed. | |
publisher | American Meteorological Society | |
title | Mesoscale Boundary-Layer Evolution over Complex Terrain. Part II: Factors Controlling Nocturnal Boundary-Layer Structure | |
type | Journal Paper | |
journal volume | 120 | |
journal issue | 5 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(1992)120<0802:MBLEOC>2.0.CO;2 | |
journal fristpage | 802 | |
journal lastpage | 816 | |
tree | Monthly Weather Review:;1992:;volume( 120 ):;issue: 005 | |
contenttype | Fulltext | |