Characteristics of Thermally-Induced Near-Surface Flows over An Enclosed Crater: Observations of the Meteor Crater Experiment(METCRAX)

作     者：WANG Lin-Lin GUO Xiao-Feng WAN Bing-Cheng 

作者机构：State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric ChemistryInstitute of Atmospheric Physics Chinese Academy of Sciences 

出 版 物：《Atmospheric and Oceanic Science Letters》 (大气和海洋科学快报（英文版）)

年 卷 期：2014年第7卷第2期

页      面：162-167页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 07[理学] 0707[理学-海洋科学] 070401[理学-天体物理] 0706[理学-大气科学] 0816[工学-测绘科学与技术] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：supported by Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDA05110104) support of the State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences (Grant No. LAPC-KF-2009-02) 

主　　题：大气的物理 山气象学 本地热循环 日报行为 

摘      要：Meteorological measurements of the Meteor Crater Experiment(METCRAX) were used to analyze the characteristics of the thermally-induced flows over an enclosed crater(Arizona, USA). Despite its relatively small size, this crater acts as an effective wind shelter. Daytime upslope winds and nocturnal downslope flows are regularly observed on its west/east sidewalls. The times of diurnal wind-direction shift(i.e., around sunrise and sunset) were slightly mismatched between the sites based on the east and west sidewalls, owing to the crater s shadowing effects. Under conditions of relatively weak synoptic forcing, the nocturnal downslope flows prevail throughout the night, despite quite a low wind velocity near the surface. ?