TITLE:
The Formation of Lee Reversal Flow and Moisture Distribution Effect on the Characteristics of Precipitation
AUTHORS:
Jinqing Liu, Ziliang Li
KEYWORDS:
Lee Precipitation; Lee Reversal Flow; Moisture Distribution; Upslope Rain; Seesaw Phenomenon
JOURNAL NAME:
Atmospheric and Climate Sciences,
Vol.3 No.2,
April
30,
2013
ABSTRACT: Moist flow over a bell-shaped mountain is investigated using the
advanced regional prediction system (ARPS). Three closely related issues are
addressed: the upslope precipitation mechanism, periodic evolution of
precipitation associated with mountain waves, and lee precipitation induced by
reversal flow. The results show that precipitation is strongly the moist distribution
and terrain scale dependent. Beginning with the case of uniformly stratified
flow over mountain, upslope precipitation and lee wave precipitation pattern
are obtained. Most importantly, lee precipitation induced by reversal
flow can be caused by layered flow over mountain, wherein lee reversal flow
exerts a significant influence on the orographic precipitation.