A Note on Temperature and Humidity Profile Measurement over Forests Using Diodes

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  • a Department of Geography, Queen's University, Kingston, Ontario, Canada
  • | b Department of Land Resource Science, University of Guelph, Guelph, Ontario, Canada
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Abstract

An instrument package developed for measuring six-level, dry-bulb and wet-bulb temperature profiles above forests is described. Germanium diodes, incorporated into a constant current circuit, were used as temperature sensors. The resolution achieved was ±0.01°C. The array was mounted so that it could be oriented through 360°. This feature greatly facilitated routine maintenance operations and allowed the sensors to be oriented into the wind during measurement periods.

Abstract

An instrument package developed for measuring six-level, dry-bulb and wet-bulb temperature profiles above forests is described. Germanium diodes, incorporated into a constant current circuit, were used as temperature sensors. The resolution achieved was ±0.01°C. The array was mounted so that it could be oriented through 360°. This feature greatly facilitated routine maintenance operations and allowed the sensors to be oriented into the wind during measurement periods.

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