Observational verification of urban surface roughness parameters derived from morphological models
نویسندگان
چکیده
منابع مشابه
Morphological parameters for urban dispersion models
A method to calculate geometrical input parameters for urban dispersion models is presented. Two cases are considered according to the relative size of the pollutant plume compared to the building size. Applying image processing techniques to urban Digital Elevation Models (DEMs, 3-D urban databases), simple geometrical parameters over extensive urban areas are calculated. Some preliminary resu...
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0022-1694/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.jhydrol.2012.05.043 ⇑ Corresponding author. Tel.: +1 407 823 4843; fax E-mail addresses: [email protected] (S.C. Me (S.C. Hagen), [email protected] (J.F. Weisham 1 Tel.: +1 407 823 3903; fax: +1 407 823 3315. 2 Tel.: +1 407 823 6634; fax: +1 407 823 5769. Parameterizing surface roughness is a key element in th...
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In the present investigation, various kinds of surface textures were attained on the steel plates. Roughness of the textures was varied using various grinding or polishing methods. The surface textures were characterized in terms of roughness parameters using an optical profilometer. Then experiments were conducted using an inclined pin-on-plate sliding apparatus to identify the role of surface...
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This paper presents an extension to a measurement system to capture bidirectional refEectance distribution function (BRDF) values and texture maps out of images. The extension will enable the measurement of reflection effects due to surface roughness and additionally extracts a map representing local surface displacements. Different lighting conditions where used to discriminate between surface...
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ژورنال
عنوان ژورنال: Meteorological Applications
سال: 2009
ISSN: 1350-4827,1469-8080
DOI: 10.1002/met.109