Specifications

 

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               (base station and rooftop)
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 %
 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 (base station)
Apogee
Model SP-110

Silicon Pyranometer
 0 to 1750 W m-2
 0.1 W m-2
 ± 5 %
 Shortwave (Solar)  Radiation (rooftop)             Kipp & Zonnen                          Model CM 21                   Black Body Pyranometer    0 to 1400 W m-2
 Longwave (Solar)  Radiation (rooftop)

            Kipp & Zonnen                 Model CG 1      Pyrgeometer

 Surface Temperature
Apogee
Model SI-100
Infrared Radiometer
-40 to +60 °C
   0.01 °C
  ±0.2 °C
from -10 to 65 °C
 Precipitation              (base station)
Texas Electronics
Model TE525MM
Tipping Bucket Rain Gauge

 --
1 tip
(0.1 mm)
 ± 1 %
up to 10 mm h-1
 Precipitation (rooftop)

                 Met One                        Model 385  Heated           Tipping Bucket Rain Gauge  

--

           1 tip            (0.1 mm)

 ± 1 %
up to 127 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 TS-100
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