1.5m Fan-aspirated Air Temperature

Description

Official air temperature measurement as an average of three PRT sensors located in a fan-aspirated radiation shield.

Sensors

Thermometrics platinum resistance thermometer

MetOne 076B aspirated radiation shield

2m Naturally-aspirated Air Temperature

Description

Secondary air temperature measurement located in a naturally-aspirated Gill radiation shield.

Sensors

EE181 Temperature and Relative Humidity Probe (2017-present)

Vaisala HMP60 Temperature and Relative Humidity Probe (2017-present, Select stations)

Rotronic HC2S3 Temperature and Relative Humidity Probe (2016-2017, Select stations)

Vaisala HMP45C Temperature and Relative Humidity Probe (2007-2017)

0.5m, 3m, and 9m Naturally-aspirated Air Temperature (Select stations)

Description

Additional levels of air temperature measurements for temperature inversion monitoring, located in a naturally-aspirated Gill radiation shield.

Sensors

EE181 Temperature and Relative Humidity Probe (2017-present)

Vaisala HMP60 Temperature and Relative Humidity Probe (2017-present, Select stations)

2m Relative Humidity

Description

Official relative humidity measurement, located in a naturally-aspirated Gill radiation shield.

Sensors

EE181 Temperature and Relative Humidity Probe (2017-present)

Vaisala HMP60 Temperature and Relative Humidity Probe (2017-present, Select stations)

Rotronic HC2S3 Temperature and Relative Humidity Probe (2016-2017, Select stations)

Vaisala HMP45C Temperature and Relative Humidity Probe (2007-2017)

0.5m, 3m, and 9m Relative Humidity (Select stations)

Description

Additional levels of relative humidity measurement, located in a naturally-aspirated Gill radiation shield

Sensors

EE181 Temperature and Relative Humidity Probe (2017-present)

Vaisala HMP60 Temperature and Relative Humidity Probe (2017-present, Select stations)

10m Wind speed and direction

Description

Horizontal wind speed and direction measured by a propeller/vane anemometer

Sensors

RM Young 05103 Wind Monitor (2007-present)

2m Wind Speed (Select stations)

Description

Horizontal wind speed measured by a cup anemometer

Sensors

RM Young 03101 Wind Sentry Cup Anemometer (2018-present)

9m Vertical wind speed (Select stations)

Description

Vertical wind speed measured by a propeller anemometer

Sensors

RM Young 27106T Gill Propeller Anemometer (2020-present)

2m Solar Radiation

Description

Incoming solar radiation measured by a silicon cell pyranometer

Sensors

Apogee SP-110 Silicon Pyranometer (2010-present)

Apogee PYR-P Silicon Pyranometer (2007-2010)

1m Barometric Pressure

Description

Barometric pressure at the station, measured by a silicon capacitive absolute pressure sensor. Mounted inside of the datalogger enclosure

Sensors

Vaisala PTB-110 Barometer (2016-present)

5m Web Camera (Select stations)

Description

Mounted webcam to capture field and sky conditions in a fixed location.

Sensors

Campbell Scientific CCFC Outdoor Observation and Surveillance Field Camera (2017-present)

5cm, 10cm, 20cm, 50cm, 100cm Soil Temperature and Soil Moisture (Select stations)

Description

Sensors are buried in soil to monitor soil conditions under natural vegetation.

Sensors

Stevens Hydraprobe-II (2009-present)

1.5m Precipitation

Description

Precipitation gauge mounted on a concrete base away from the main tower. Uses a weighing mechanism to calculate the amount of liquid-equivalent rainfall in a collection bucket.

Sensors

OTT Pluvio² Weighing Rain Gauge (2016-present)

Vaisala VRG101 All Weather Precipitation Gauge (2007-present)

Texas Electronic TE525 Tipping Bucket Rain Gauge (Select stations, 2007-2015)

2m Wetness Sensor

Description

Circuit grid mounted on the tower to serve as a wet/dry indicator.

Sensors

Campbell Scientific 237 Leaf Wetness Sensor (2016-present)

Vaisala DRD-11A Wetness Sensor (2007-present)