| Parameter | Manufacturer & Model |
Measurement Range | Resolution (Reproducibility) | Fundamental Accuracy |
|---|---|---|---|---|
|
Wind Speed
|
R.M. Young
Wind Sentry 03002 Cup Anemometer |
0 to 50 m s-1
(0 to 112 mph) |
0.2 m s-1
|
± 0.5 m s-1
(± 1.1 mph) |
|
Wind Speed
|
Gill
Windsonic 2-D Sonic Anemometer |
0 to 60 m s-1
|
0.01 m s-1
|
± 2 % of reading
|
|
Wind Direction
|
R.M. Young
Wind Sentry 03002 Wind Vane |
360° mechanical
352° electrical (8° dead band) |
1°
|
± 5°
|
|
Wind Direction
|
Gill
Windsonic 2-D Sonic Anemometer |
360°
(no dead band) |
1°
|
± 3°
|
|
Barometric Pressure
|
Vaisala
Barocap PTB110 Electronic Barometer |
50 to 110 kPa
|
0.01 kPa
|
±0.03 kPa at 20 °C
|
|
Photosynthetic
Photon Flux |
Apogee
Model SQ-215 Quantum Sensor |
0 to 2000
umol m-2 s-1 |
0.5
umol m-2 s-1 |
± 5 %
|
|
UV Radiation
|
Apogee
Model SU-100 Ultraviolet Sensor |
0 to 170
umol m-2 s-1 |
6.5
umol m-2 s-1 |
± 10 %
|
|
Net Radiation
(shortwave & longwave upward & downward radiation flux) |
Huskeflux
Model NR01 4-way Net Radiometer |
0 to 2000 W m-2
|
0.1 W m-2
|
± 3 %
|
|
Shortwave (Solar)
Radiation |
Apogee
Model SP-110 Silicon Pyranometer |
0 to 1750 W m-2
|
0.1 W m-2
|
± 5 %
|
|
Surface Temperature
|
Apogee
Model SI-100 Infrared Radiometer |
-40 to +60 °C
|
0.01 °C
|
±0.2 °C
from -10 to 65 °C |
|
Precipitation
|
Texas Electronics
Model TE525MM Tipping Bucket Rain Gage |
-- |
1 tip
(0.1 mm) |
± 1 %
up to 10 mm h-1 |
|
Air Temperature
|
R.M. Young
Naturally Ventilated Gill-type Radiation Shield* |
-40 to +60 °C
|
0.01 °C
|
1 °C
|
|
Air Temperature
|
Apogee
Fan Ventilated Radiation Shield* |
-40 to +60 °C
|
0.01 °C
|
0.1 °C
|
|
Atmospheric CO2
|
Vaisala
Carbocap GMP 343 CO2 Transmitter |
0 to 1000 ppm
|
1 ppm
|
± 3 ppm CO2
+1 % of reading |
|
Volumetric
Soil Water Content |
Campbell Scientific
Model CS655 Water Content Reflectometer |
0 to 50% VWC
|
0.1 % VWC
|
± 2.5 % VWC
|
|
Relative Humidity
|
Vaisala
Model HMP 110 |
0 to 100% RH
|
0.01 % RH
|
± 1.7 % (0 to 90% RH)
± 2.5 % (90 to 100% RH) |
|
Surface Wetness
|
Decagon
Dielectric Leaf Wetness & Frost Sensor |
dry to wet
|
1 drop of water
|
1 drop of water
|
|
Datalogger
|
Campbell Scientific
Model CR3000 |
0 to 5 volts DC
|
0.33 microvolts
|
|
|
Multiplexer
|
Campbell Scientific
Model AM16/32 |
16 differential channels
|
*Each radiation shield houses one fine wire and one yellow bead thermistor for measurement of air temperature.