All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 86 22 0
PDF Downloads 48 9 1

Regional Drainage Flows in the Pacific Northwest

J. C. DoranPacific Northwest Laboratory, Richland Washington

Search for other papers by J. C. Doran in
Current site
Google Scholar
PubMed
Close
and
S. ZhongPacific Northwest Laboratory, Richland Washington

Search for other papers by S. Zhong in
Current site
Google Scholar
PubMed
Close
Full access

Abstract

An analysis of regional drainage flows in the Pacific Northwest is presented using results from a network of surface observations and a series of simulations carried out with a nested mesoscale model. The flows, which occur regularly in southeastern Washington during the late spring and summer months, are marked by an increase in wind speed and a shift to northwesterly wind directions early in the evening. The phenomenon occurs when a deep mixed layer forms cast of the Cascade Range, drawing cooler air from the west over the mountain crest. Anabatic and katabatic forcing, terrain channeling, and turning by the Coriolis force combine to produce the characteristic flow patterns.

Abstract

An analysis of regional drainage flows in the Pacific Northwest is presented using results from a network of surface observations and a series of simulations carried out with a nested mesoscale model. The flows, which occur regularly in southeastern Washington during the late spring and summer months, are marked by an increase in wind speed and a shift to northwesterly wind directions early in the evening. The phenomenon occurs when a deep mixed layer forms cast of the Cascade Range, drawing cooler air from the west over the mountain crest. Anabatic and katabatic forcing, terrain channeling, and turning by the Coriolis force combine to produce the characteristic flow patterns.

Save