Variable	Instrument	Manufacturer
u	Cup anemometer	Vaisala WAA15
u, a	Wind vane	Vaisala WAV 15
q , q	Psychrometer	ventilated, Pt 100 temperature sensor
Rn, Rl¯ ­ , Rs¯ ­	Pyrradiometer Pyrgeometer Pyranometer	Schenk model 8111 Eppley Radiometer Kipp & Zonen CM 21
u’, v’, w’, q ’	Ultrasonic anemometer Thermocouple 12 m m	Gill 3 Axis Standard /Enhanced