Analysis of Nighttime Drainage Winds in Boulder, Colorado during 1980

Hootman, Bruce W.; Blumen, William

doi:10.1175/1520-0493(1983)111<1052:aondwi>2.0.co;2

Cited by 30 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the other hand, winds in or near complex terrain contain much more vertical structure, and reversals within the boundary layer are not unusual. Examples can be seen in the tower records obtained at the Boulder Atmospheric Observatory (Gossard et al, 1985;Hootman and Blumen, 1983). Drainage flows are often capped by a return flow that guarantees a zero wind about which stationary waves will saturate.…”

Section: The Influence Of Wiid Shearmentioning

confidence: 99%

Wave drag in the planetary boundary layer over complex terrain

Chimonas

Nappo

1989

Boundary-Layer Meteorol

View full text Add to dashboard Cite

show abstract

Section: The Influence Of Wiid Shearmentioning

confidence: 99%

Wave drag in the planetary boundary layer over complex terrain

Chimonas

Nappo

1989

Boundary-Layer Meteorol

View full text Add to dashboard Cite

show abstract

“…These characteristics suggest that the jet which appeared at the Gobi station as seen in Fig. 3 is a kind of nighttime drainage flow which is quite similar to that in Boulder and reported by Hootman and Blumen (1983). Figure 4a and 4b show the temporal variation of the momentum flux w'u' and the heat flux w'T' at 8 m estimated with the ultrasonic anemometer and the fast-response temperature sensor data, respectively, at HY (Gobi).…”

Section: Instrumentation and Datamentioning

confidence: 99%

“…Brost (1978) and Mahrt (1981) showed that even if the slope is very small, a significant drainage flow can form along the slope. Hootman and Blumen (1983) and Blumen (1984) analysed the characteristics of drainage winds that occured along the eastern slope of the Rocky Mountains and the structure of the PBL when the drainage flow approached, based on the data observed by the Boulder Wind Network.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Nighttime Drainage Wind in the HEIFE Region

Wang

Zhu

Wang

et al. 1995

Journal of the Meteorological Society of Japan

View full text Add to dashboard Cite

When the influence of a synoptic system is weak, nighttime drainage wind often occurs along the front range of the Qilian Mountains, the southwest fringe of the Hexi Corridor, which blows to the gobi (rock desert). The features of the drainage wind were analyzed using the data from two meteorological stations at the foot of the Qilian Mountains. The maximum wind was found at the 8 m level and the depth of the flow was shallow. The flow dissipated quickly over the oasis. A sudden decrease in air temperature was observed below the 10m level, associated with the passage of the leading edge of the drainage flow. The upward momentum flux and the downward heat flux due to the turbulence increased just when the leading edge of the flow was passing.

show abstract

“…Johnson and Toth (1982) discussed the pronounced diurnal "slosh" in the surface winds averaged over the month of July 1981. Hootman and Blumen (1983) studied the evening drainage wind that develops frequently near the foothills and spreads a considerable distance onto the plains as a gravity current.…”

Section: Bulletin American Meteorologicalmentioning

confidence: 99%

focus on forecasting1

1985

Bulletin of the American Meteorological Society

View full text Add to dashboard Cite

The Program for Regional Observing and Forecasting Services (PROFS) work station is examined within the context of a real-time forecasting exercise conducted in the summer of 1983. Twenty-four experienced operational and research meteorologists participated; their recorded comments constitute the base of information from which we evaluate the work station and, in the process, discuss the state of the art in forecasting convective weather.The work station is easy to use: within an hour, most uninitiated forecasters are completely comfortable operating the equipment. The PROFS system has significantly advanced our ability to display current atmospheric conditions. The user interface and data-display system are the most sophisticated yet assembled for nowcasting and very short-range forecasting (as these terms are defined by Zipser, 1985), with access to products derived from a very broad range of data sets. Timely, frequent, and detailed data of several types presented with loop, zoom, and color-table versatility allow the forecaster to rapidly assess current conditions.Because of the comprehensive data and improved display capabilities, forecasters felt confident in extrapolating the intensity and movement of existing thunderstorms. Most of them believe that increased lead times and more site-specific warnings are now possible. They are less confident, however, in forecasting beyond the lifetime of existing features because of inadequacies in observation technologies and limitations in the current body of knowledge of meteorological processes on this scale. Exercise participants stressed that improvements are needed to advance forecast performance, especially work-station upgrades, better forecaster-training procedures, and research of meteorological processes.

show abstract

Analysis of Nighttime Drainage Winds in Boulder, Colorado during 1980

Cited by 30 publications

References 0 publications

Wave drag in the planetary boundary layer over complex terrain

Wave drag in the planetary boundary layer over complex terrain

Analysis of Nighttime Drainage Wind in the HEIFE Region

focus on forecasting1

Contact Info

Product

Resources

About