Global Atlas of Siting Parameters V1

The Global Atlas of Siting Parameters version 1 data-sets contain microscale wind information at approximately 250m grid point spacing.<br>The data in this directory consist of the entire global tiff at the full 0.0025 degree resolution on the WGS84 map projection. These data also include foverview pyramids to improve the viewing of the data at low resolution.<br>Most of the data are named as follows: gasp_{variable}_{height}_cog.tif, where variable is one of the following:<br><br><b><i>Atmospheric Variables</i></b><br>* <b>flow-inclination - </b>Flow inclination angle calculated using the LINCOM linear flow model.<br>* <b>shear-exponent - </b>Terrain-affected shear exponent calculated using the LINCOM linear flow model.<br>* <b>turbulence-intensity - </b>Mean turbulence intensity, calculated using an ensemble of four models onshore, and two models offshore. <br>* <b>V50 - </b>The 50 year return wind speed, using a 10-minute averaging time. This was calculated by downscaling the CFSR data using a combination of the Spectral Correction method and the LINCOM linear flow model.<br><b><i>Loads</i></b><b><i><br></i></b><b>* fls-class-nowake –</b> IEC turbine class based on the fatigue limit state (fatigue loads), which accounts for normal conditions like wind speed distribution and effective turbulence, not including wake effects.<br> <b>* fls-class-wake - </b>IEC turbine class based on the fatigue limit state (fatigue loads), which accounts for normal conditions like wind speed distribution and effective turbulence including wake effects.<br> <b>* uls-class - </b>IEC turbine class based on the ultimate limit state (extreme loads), which is based on the V50 and air density at high wind speed.<br><b>Uncertainty</b><b><br></b>* <b>uncertainty-ti - </b>Uncertainty classification of turbulence intensity<br>* <b>uncertainty-V50 - </b>Uncertainty classification of V50<br><br><b><i>Terrain</i></b><b><i><br></i></b>* <b>terrain-complexity - </b>IEC based classification of terrain complexity