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elbigkonan

WAsP team
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  1. GWC: generalized wind climate, i.e. the wind climate where the effects of the topography have been extracted
  2. Hi, WAsP runs without complaining because what you are doing is exactly what WAsP is meant for, i.e. the prediction of wind resources using measurements which might be at a different location and height. So if you are estimating a wind resource it means that at least you are doing horizontal extrapolation of the results (in most cases you will do both vertical and horizontal). In your particular case, all the WAsP models will be used as you first need to estimate a GWC which involves accounting for the topography effects on your tab location. Then you will re-account for topography effects (which will be different as you are at a different location and height) at each of your grid resource nodes and use the GWC to derive the climate/resource. While you do this, WAsP also uses the "background" wind profile, which is used for accounting of the vertical wind shear. So in order to know the uncertainty of all the process you need to know the uncertainty in each of the models of WAsP. Regards, WAsP support
  3. Dear GX, Well, people normally find the wind data from actual observations from sites which are close to the places where they want to estimate the annual energy production. The type of data that you can gather "for free" depends on the location you want to perform your analysis. In any case, we at DTU Wind Energy have some online data http://veaonline.risoe.dk/rodeo/projectlistmap.aspx that you can explore but of course you can use it provide you it is applicable to your site. You can also find "simulated" data from mesoscale model runs or from Reanalysis. Some wind consultancies can sell you such data. There is another possibility if you just want to "play" with WAsP and is to construct the data from a tab file (check the help to see how this is constructed). Regards, WAsP team
  4. Hi shanewind, Yes, as you mentioned the idea is to be able to incorporate further meteorological inputs in WAsP so that we can better predict the climatological wind profile. The ideal scenario would be to be able to input parameters related to the momentum and heat fluxes (time series of them). Thus, ideally if you are able to place a scientific sonic anemometer on your mast and record both fluxes, you will be pointing in the right direction. Another alternative is to record temperatures and wind speeds at two heights (humidity and pressure as well); then there are ways to estimate both fluxes using such measurements. However, I must say that this is a big step in WAsP and we are working hard on finding out what will be the best way to implement this. Also, in case you can I recommend you install as many sensors as you can. This will allow you to understand your site and find out the limitations in WAsP and the uncertainties on the WAsP estimates. Cheers
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