Extended Abstract (160K)J1.14
Comparison Between the Wind and Temperature Fields Within the Roughness Sub—Layer and an Open Area
Eyal Fattal, Israel Institute for Biological Research, Ness-Ziona, Israel; and S. Pistinner and E. Gavze
Wind and temperature measurments were conducted during summer time, deep within an urban fetch, above and below roof level. Two tetheredsondes positioned roughly 50 meters apart above the outer sides of the building surrounding the street, measured the wind direction and speed continuously. The height of these tetheredsondes was varied between 20 and 40 meters above roof level. In addition one reference anemometer was positioned in an open area, outside the city, 10 meters above ground level. Measurements were continuously logged for a period of five days. A comparison between the flow in the different regimes is presented. The effect of an urban area on the flow is discussed.
Joint Session 1, Flow and dispersion studies: building, street canyon (measurement and modeling) (Joint with the Fourth Symp. Urban Environment, 12th Joint Conf. on the Applications of Air Pollution Meteorology with A&WMA, and 25th Conf. Agricultural & Forest Meterology)
Tuesday, 21 May 2002, 8:30 AM-12:15 PM
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