WAsP in the city (2006-06-27)

[Old Forum Archivist]

WAsP over-estimates AEP in the urban environment, i.e. actual production is nearer 3/4 of the WAsP result. Are there any tricks learned to correct for this ? e.g. I've tried increasing roughness and obstacles with limited success. Perhaps the urban area should be included as an increased height of orography ? Would it be appropriate to consider the city (turbine on edge of) in terms of displacement (like WAsP in the forest) ?

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