Hi,
Is there an update on this issue? I am also trying to model a site in a forest.
I ran into the following issues:
1. I tried downloading the GWA landcover layers directly from the WAsP Map Editor, I can see the landcover IDs assigned to the landcover change lines, however it does not save the landcover ID information in the .map format so I saved it as a .lcv.gml file. I run into the following issues:
1a. I tried to import this file into WAsP and it is "unable to restore a map from the GML file". How do I import the GWA landcover layers in WAsP?
1b. I am able to import the elevation layer as .oro.gml file into WAsP but unable to import landcover layer in .lcv.gml format
1c. Is it possible to combine landcover and orography into a single vector file? Or should I keep them as two separate files and import them separately into WAsP?
2. I found an entry that indicates that WAsP is able to read displacement height directly from landcover layer from version 12.7 onwards: https://www.wasp.dk/news/nyhed?id=735ea5a0-af89-4e78-9a2b-72d232e27b74 .
2a. There is a reference to a spider grid analysis routine - "A new spider grid analysis routine is developed to process WAsP GML land cover maps". What is this and how do I use this?
2b. There is also a reference to a table - "For each cell in the zooming grid, the fraction of the total area fi that each of a total of N land cover types in the land cover table occupies is determined and the roughness length is calculated. The displacement height is taken into account similarly to z0 and is calculated for each cell in the zooming grid." Is the conversion of ID to displacement height and roughness automatically done by WAsP or do I need to use a specific tool/module to do this?
3. Re. the orographic submodule: This section describes advanced wind flow feature like computation of wind speedups due to elevation. Do I specifically need to input a .oro.gml file in WAsP for the Terrain Analysis? Do I also need to input the lcv.gml for displacement heights to be modeled with elevation?
I am at a loss to on how to do both these things (combine elevation and landcover inputs into WAsP). Any instructions would be helpful, I have gone through the online course material and I don't see any instructions on how to do this.
4. I am assuming the step to subtract displacement height to account for forest canopies is unnecessary in the current version - 12.8. Is this correct?
