When is a wind measurement representative?

Representativeness depends on sensor height, obstacles, roughness, terrain and the spatial scale for which data are used.

Clear airflow

Buildings, trees, masts and platform structures can cause turbulence, acceleration or sheltering.

Direction-dependent

A wind sensor can be clear for westerly winds and heavily disturbed for easterly winds. A 360° assessment is therefore important.

Fit for purpose

A local roof measurement may be useful for shading control on that building but not for regional wind climate.