Nocturnal flow on a western Colorado slope

Conference · Fri Jun 01 00:00:00 EDT 1990

OSTI ID:7017340

Leone, Jr, J M; Gudiksen, P H

The Department of Energy sponsored Atmospheric Studies in Complex Terrain (ASCOT) program has conducted a research program designed to increase our knowledge and understanding of terrain-dominated flows with specific emphasis on nocturnal flows within mountain valleys. ASCOT has sponsored both field studies and numerical modeling efforts to improve our understanding of the wind, temperature and turbulence structure of nocturnal drainage flows. One of the most recent ASCOT sponsored field studies involves a study within the Mesa Creek Basin in western Colorado to investigate the seasonal frequency of occurrence of drainage flows along the sloped surfaces and within the basin, and to evaluate the effect of the ambient meteorology on their development. The modeling portion of the study is being undertaken by Lawrence Livermore Laboratory using a three-dimensional prognostic boundary layer model to gain further insight into the dynamics of the seasonal variations and the effect of cloud cover on the development of the drainage flows. It is the purpose of this paper to present preliminary results from a numerical simulation done as part of this study. 4 refs., 7 figs.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: DOE/EH
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7017340
• Report Number(s): UCRL-JC-103587-Rev.1; CONF-900534-2-Rev.1; ON: DE90013283
• Resource Relation: Conference: 18. NATO/CCMS international technical meeting on air pollution modelling and its applications, Vancouver (Canada), 13-17 May 1990
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
COMPLEX TERRAIN
FLUID FLOW
NOCTURNAL VARIATIONS
AMBIENT TEMPERATURE
COLORADO
DRAINAGE
ENVIRONMENTAL EFFECTS
FIELD TESTS
MATHEMATICAL MODELS
METEOROLOGY
RESEARCH PROGRAMS
SEASONAL VARIATIONS
SIMULATION
THREE-DIMENSIONAL CALCULATIONS
TOPOGRAPHY
VELOCITY
WIND
FEDERAL REGION VIII
NORTH AMERICA
TESTING
USA
VARIATIONS
540310* - Environment
Aquatic- Basic Studies- (1990-)
540110