Summertime Nocturnal Drainage Flow in the San Mateo and Ambrosia Lake Air Sheds of the Grants Basin.

摘要

An initial study of some fundamental meteorological properties of two major air sheds in the Grants Basin of northwestern New Mexico was conducted from May 18to September 19, 1978. Three mechanical weather stations were used in conjunction with a few vertical wind soundings to develop a data set for the summer regime. Data collected between May 18and July 30is analyzed to investigate nocturnal drainage flows,daytime flows,and channeling of synoptic wind. Drainage wind averaging 2.5 m s exp -1was found to exist in a surface layer not greater than 200 m deep on 60% of the nights investigated. This frequently occurring drainage flow is characterized by a strong decoupling from the upper level winds. Daytime winds,on the other hand,are representative of the synoptic flow patterns suggesting a rather rapid coupling after sunrise. (ERA citation 04:027738)