On the calibration and temperature behaviour of single-beam infrared hygrometers |
| |
| Authors: | C J Moore |
| |
| Institution: | (1) Institute of Hydrology, Crowmarsh Gifford, Wallingford, Oxon, UK |
| |
| Abstract: | The single-beam infrared hygrometer (Hyson and Hicks, 1975) is increasingly popular as a device capable of measuring atmospheric humidity fluctuation for use in eddy correlation studies. However, it is generally applied without recognition of the effect of temperature on its performance. Calibration data from a number of such instruments indicate that the resulting calibration coefficients vary with mean temperature as a direct consequence of temperature dependence in photodetector response. Fluctuations in atmospheric and instrumental temperatures can also introduce significant errors in the measurement of humidity fluctuations.This paper draws attention to the problem of temperature dependence in the calibration of these devices and provides a framework for investigating the magnitude of other errors involved in their use. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
