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Citation:
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MW Center for the Environment, Mount Holyoke College. (accession date). Open Field station weather data
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Explanation of measured weather parameters. Data collected with the HOBO weather station.
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Rain gauge - Range: 0-12.7 cm per hour, Resolution: 0.01in. or 0.02 mm, Accuracy: +/-1.0%
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PAR sensor - Photosynthetically Acive Radiation. Range: 0-2500 µmol/m2/sec or +/-5%, Resolution: 2.5 µmol/m2/sec, Accuracy: <2%. The PAR sensor is designed to detect photons between 400-700 nm in wavelength.
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Solar Radiation - Pyranometer sensor - is designed to measure solar power per unit area (watts per square meter). Ramge: 0-1280 W/m2, Accuracy: +/-5%, +/- 10 w/m2, Resolution: 1.25 W/m2.
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Wind Speed/Direction sensor - is designed to measure wind speed, gust and direction. Range: 0-44m/s as a speed and 0-358 degrees as a direction. Accuracy: +/-0.5m/s for the speed and +/-5 degree for the direction. Resolution: 0.19 m/s and 1.4 degree.
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Barometric Pressure sensor - is designed to measure the atmospheric pressure. Range: 660-1070 mbar or 19.47-31.55 Hg, Accuracy: +/- 3.0 mbar or 0.088 Hg. Resolution: 0.1 mbar or 0.03 Hg.
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(Relative Humidity (Temperature/RH) sensor: Range: -40ºC to +75 ºC (-40 ºF to +167 ºF). Accuracy 0.2 ºC. Resolution 0.02 ºC. RH is the amount of moisture in the air compared to what the air can "hold" at that temperature.
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Soil Temperature sensor: Range: -40 ºCto +100 ºC (-40 ºF to +212 ºF). Accuracy 0.2 ºC. Resolution 0.03 ºC. Sensors placed at the depth: 5 cm, 20 cm, 60 cm.
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Soil moisture sensor - is designed to measure soil water content. Range:0-0.405 m3/m3. Accuracy: +/-0.041 m3/m3.Resolution: +/-0.0004 m3/m3. Sensors placed at the depth: 5 cm, 20 cm, 60 cm.
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