3TIER offers GIS formatted data for key wind variables including: wind speed, wind direction, power density, and Weibull k and A. This information is available at 20, 50, and 80 m hub heights.
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GIS Data Layer
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Annual Mean Values
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Monthly Mean Values
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Available Resolution
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Wind Speed
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X
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X
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5 km
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Wind Direction
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X
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15 km
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Power Density
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X
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X
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15 km
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Weibull k and A
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X
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15 km
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Custom resolutions and hub heights are available through 3TIER's FullView Wind Spatial Mapping product, which offers annual and monthly spatial maps of your specific project location including CSV files.
Multiple Format Delivery Options:
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Arc ASCII Grid
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CSV files
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GeoTIFFs
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KMZ files
Methodlogy
3TIER produced its dataset by implementing an innovative physics-based NWP (Numerical Weather Prediction) modeling approach. Unlike traditional models that merely interpolate observed wind speeds between widely dispersed points, 3TIER's system simulates the interaction between the entire atmosphere and the earth's surface, to create a more robust and accurate wind climatology. 3TIER's technique captures the myriad processes responsible for wind—from jet level dynamics to surface level processes and everything in between. Using proven, state-of-the-art methods supported and continually enhanced by the global atmospheric science and research community, 3TIER is able to create realistic wind fields throughout the world.
Global Dataset Highlights
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Mesoscale 10-year WRF (Weather Research and Forecasting) model run
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Model constrained by high-quality inputs from the NCAR/NCEP reanalysis, which incorporates real observational data
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Validated by 4000 NCEP-ADP network stations worldwide
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Validation Results: The difference between annual mean wind speed data provided by 3TIER and actual on-site measurements from NCAR/NCEP reanalysis is less than 0.5 m/s at 50% of the observational stations and less than 1 m/s at 78% of the stations. The overall bias is +0.05 m/s relative to NCEP-ADP observations, and the RMSE (Root Mean Square Error) is 0.93 m/s. Find our validation papers here.
If you are unfamiliar with the technical terminology on this page, please visit our Glossary for more information.