wind arrows

east entrance

Sailboat wind indicators mounted at one-foot intervals on a flagpole at the east end of Fort Mason illustrate how the laminar flow of wind changes with height. This variation is often more complex and dramatic than expected. Along the San Francisco shoreline, for example, a difference of only 20 feet in altitude may mean a 90 degree difference in the wind’s direction.

This project is supported by the National Science Foundation under Grant No. ESI-0104478. Any opinions, findings and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect those of the National Science Foundation.