Getting started--creating a WRG

I'm a beginner here, but I have been using AWS's 200m scale wind model for certain areas as raster backdrops or to do simple analysis. How can I use these grids to create a WRG to use in openWind?

After reading the forums and taking the course, I'm starting to piece together the lingo and steps involved, but I'm stuck at the point of creating a tab file from a set of raster points containing weibell factors and importing that to openwind. I see that to create a WRG you need WAsP, which I have the free demo but no more. It seems that openwind has a windflow model, but is that included in the free version?

So what I have is the 200m wind raster grid, a DEM, and the wind rose shapefile from AWS. Could you give me a quick overview of the process to go from here to a WRG?

Thanks. -Jackson

Hey Jackson,

Good to see you on here. You can use the windflow model in openWind instead of WAsP. It doesn't make a wasp WRG but it does make a wind resource grid that you can use in openWind. I'll add more on this later.

Your problem though is that you dont have a wind frequency table (TAB file). You can make a TAB file from measured data using either the free WAsP utility or something like Windographer from Mistaya. If you dont have that then you can also buy a virtual met mast from AWS Truewind which is a TAB file based on modelled data adjusted to long term trends (so far as I understand).

2D raster data wont get you to where you need to be - sorry.

Nick

Hi Nick, looks like this thread has been stale since last year. But, I was wondering if anyone has had success creating windmaps from a virtual met mast?

Many Thanks, Drew

Yes. I have. If you search these forums then you will find that I posted a little program to make TAB files out of time series data. Also, you can now buy virtual met masts data from WindNavigator .  You will need a roughness map and terrain and then you're set. The wind flow model in openWind is only good for having a rough look at your site. Once you're serious you should purchase some software such as WAsP or Meteodyn WT and use that instead. Of course if you're really serious, you should ask AWS Truepower to create your WRG for you.

Nick