Sensors
Sonic - ATI Type K sonic at 30, 122, 396 m oriented at 189.28 degrees (facing south)
Applied Technologies Inc., Boulder, Colorado, model SAT-11/3K

Li-6262 at 30, 122, and 396 m
  30 meter: tube length is 35 m, radius is 0.0045 m
    inlet is 2m from sonic, on center arm, directly behind (north)
  122 meter: tube length is 5 m, radius is 0.0016 m
    inlet is 1m from sonic, on center arm, directly behind (north)
  396 meter: tube length is 5 m, radius is 0.0016 m
    inlet is 1m from sonic, on center arm, directly behind (north)

+u is into sonic, +w is upward, +v follows right hand rule

Surface met sensors are located off trailer near tower base (2.5 m height)

Temperature/Humidity are shielded Vaisala HMP45C sensors, no aspiration/ventilation
See hourly file metadata for more details
See Ameriflux pages for US-PFa for site details, references, BADM data

For Willow Creek data:
  Soil heat flux is a single plate at 5 cm below ground plus thermocouple above
  Radiation sensors are positioned due south above canopy at 24 m
  30 minute data was averaged to hourly