Directional Wind
Orbital Stack provides directional wind results on presentation plane surfaces as well as volumetric streamlines. Each of these results has its own color scale.
Results displayed on presentation planes use the horizontal color legend and are 80th percentile scaled. This means that the results shown consider wind speeds in the 80th percentile for that wind direction – qualitatively these are what can be expected for strong, gusty conditions.
The volumetric (streamline) directional wind results use the volumetric color scale. These results are displayed as a wind speed ratio and consider annual wind data.
Horizontal Color Legend
What is it measuring?
The 80th percentile scaled wind speed at a location for a defined season and wind direction (315 is NW). Wind speed is in meters per second.
What options can I specify?
The Season is defined by the user (or predefined for them) by specifying a range of months.
Volumetric Color Legend
What is it measuring?
The relative wind speed along the streamlines for the given wind direction. This is a dimensionless wind speed ratio.
What options can I specify?
None, this scale shows a relative wind speed, and the plots are not seasonal nor scaled for climate data. Year-round conditions are used.