Changes between Version 7 and Version 8 of project/project/subproj/wps51


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Timestamp:
May 18, 2022 9:23:33 AM (5 months ago)
Author:
westbrink
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  • project/project/subproj/wps51

    v7 v8  
    4343The Morris method was used for different setups, whereby model areas with horizontally homogeneous properties or individual obstacles were initially considered. The ‘land surface model’ and the ‘radiation model’ were used for horizontally homogeneous natural and urban surfaces, and the ‘vegetation_pars’ or ‘pavement_pars’ and the ‘soil_pars’ were varied. Using the ‘plant canopy model’, a horizontally homogeneous plant canopy was considered and the influence of its height, its LAD-profile and the canopy drag coefficient on the stationary wind profile were examined. Setups with single obstacles included a single building with varying dimensions or a single tree varying in height, crown height to width ratio, LAI, crown and trunk diameter, and canopy drag coefficient.
    4444
    45 In addition to these simple setups, the influence of green and blue elements in an urban area should be investigated in order to be able to adjust the accuracy and effort involved in data collection in urban areas accordingly. A grid sensitivity study has already been carried out for such a setup. The simulation of diurnal cycles and the uncertainty and sensitivity analysis will follow.
     45In addition to these simple setups, the influence of green and blue elements in an urban area is investigated in order to be able to adjust the accuracy and effort involved in data collection in urban areas accordingly. A grid sensitivity study has already been carried out for such a setup. The simulation of diurnal cycles and the uncertainty and sensitivity analysis are being carried out.
    4646
    4747Fig. 1 and 2 show selected results for the application of the Morris method on the horizontally homogeneous natural surface. The assessment of the relevance of the parameters can be done using the standard deviation of the output σ,,out,,. If a parameter leads to a variation of the output that corresponds to or exceeds , it can be assigned a relevance according to the prefactor z*σ,,out,,, which is shown in color in Fig. 1 c), d) and Fig. 2.
                                                                                                                                                                                                                                                                                                                                                                               
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