This equipment belongs to the National Weather Service. It measures wind speed and direction ultrasonically. The spikes keep the birds off the equipment.
There is a long history of the use of kites in meteorology. In the early days of meteorology, before airplanes and satellites, kites were frequently used to send weather observation equipment aloft. Measurements of temperature, humidity, and altitude were taken. Sometimes wind speed and wind direction were measured as well. At the Observatory kites were […]