An aerovane at the standard height of 33 feet (10 meters) measures wind direction, speed, and gust.
Vertical Temperature Difference
Apogee ST-300
A platinum resistance thermometer in a fan-aspirated radiation shield at a height of 33 feet (10 meters) measures air temperature. The difference between this and air temperautre at 80 inches (2 m) is the standard for inversion monitoring.
Air Temperature
Apogee ST-300
A platinum resistance thermometer in a fan-aspirated radiation shield at a standard height of 80 inches (2 meters) measures air temperature.
Humidity
Vaisala HMP155E
A hygrometer in a passive radiation shield at a standard height of 80 inches (2 m) measures relative humidity.
Solar Radiation
Campbell Scientific CS320
A heated thermopile pyranometer measures global horizontal irradiance. This is used in the calculation of evapotranspiration (crop water use).
Barometic Pressure
Campbell Scientific BaroVUE10
A barometer at a height of 60 inches (1.5 meters) measures station pressure. This is used to calculate altimeter setting which removes the effect of elevation.
Snow Depth
Sommer USH-9
A temperature-corrected sonic sensor measures snow depth.
Precipitation
OTT Pluvio² L 400 RH
A weighing gauge with heated rim in an Alter shield at a standard height of 60 inches (1.5 meters) measures liquid, freezing, and frozen precipitation.
Bare Soil Temperature
Campbell Scientific 107
A thermistor at a depth of 4 inches (10 centimeters) measures bare soil temperature. This is the standard for agricultural weather.
Soil Moisture and Temperature
Acclima TDR-310N
Five time-domain reflectometers at the standard depths of 2, 4, 8, 20, and 40 inches (5, 10, 20, 50, and 100 centimeters) measure soil water content and temperature under natural cover.
Images
Uniview IPC2105SB-ADF16KM-I0
Two 180° cameras facing southwest and northeast image the sky.
An aerovane at the non-standard height of 10 feet (3 meters) measures wind direction, speed, and gust. Wind speed and gust will generally be less compared to the standard of 33 feet (10 meters).
Veritcal Temperature Difference
Campbell Scientific 107
Two thermistors in passive radiation shields at non-standard heights of 40 inches and 10 feet (1 and 3 meters) measure air temperature. The difference is used for inversion monitoring. Magnitudes will generally be of the same sign but lower magnitude compared to the standard 33 feet and 80 inches (10 and 2 meters).
Temperature and Humidity
Campbell Scientific EE181
A thermohygrometer in a passive radiation shield measures temperature and relative humidity at a standard height of 80 inches (2 m).
Solar Radiation
Apogee SP230
A heated silicon-cell pyranometer measures global horizontal irradiance. This is used in the calculation of evapotranspiration (crop water use).
Barometic Pressure
Setra 278
A barometer at a height of 60 inches (1.5 meters) is used to measure station pressure. This is used to calculate pressure corrected for elevation (altimeter setting).
Rainfall
Texas Electronics TR-525I
A unheated tipping bucket gauge at a standard height of 40 inches (1 meter) measures non-freezing, liquid precipitation.
Bare Soil Temperature
Campbell Scientific 107
A thermistor at a depth of 4 inches (10 centimeters) measures bare soil temperature. This is the standard for agricultural weather.
Soil Moisture and Temperature
Stevens HydraProbe
Five coaxial impedence dielectric reflectometers at the standard depths of 2, 4, 8, 20, and 40 inches (5, 10, 20, 50, and 100 centimeters) measure soil water content and temperature under natural cover.
An anemometer at the non-standard height of 10 feet (3 meters) measures wind speed and gust. Wind speed and gust will generally be less compared to the standard of 33 feet (10 meters).
Wind Direction
Met One 024A
A vane at the non-standard height of 10 feet (3 meters) measures wind direction.
Temperature and Humidity
Vaisala HMP45AC
A thermohygrometer in a passive radiation shield measures temperature and relative humidity at a standard height of 80 inches (2 m).
Solar Radiation
LI-COR LI-200
A silicon-cell pyranometer measures global horizontal irradiance. This is used in the calculation of evapotranspiration (crop water use).
Rainfall
Texas Electronics TR-525I
A unheated tipping bucket gauge at a standard height of 40 inches (1 meter) measures non-freezing, liquid precipitation.