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A calibration and temperature correction procedure for the water‐content reflectometer
Author(s) -
Western Andrew W.,
Seyfried Mark S.
Publication year - 2005
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/hyp.6069
Subject(s) - calibration , water content , environmental science , remote sensing , field (mathematics) , soil science , content (measure theory) , soil water , function (biology) , set (abstract data type) , hydrology (agriculture) , computer science , geology , mathematics , statistics , geotechnical engineering , mathematical analysis , evolutionary biology , pure mathematics , biology , programming language
Calibration is required for most soil moisture sensors if accurate measurements are to be obtained. This can be time consuming and costly, especially if field calibration is undertaken, but can be facilitated by a good understanding of the behaviour of the particular sensor being calibrated. We develop generalized temperature correction and soil water calibration relationships for Campbell Scientific CS615 water‐content reflectometer sensors. The temperature correction is estimated as a function of the raw sensor measurement. The calibration relationship requires one soil‐related parameter to be set. These relationships facilitate field calibration of these sensors to acceptable accuracies with only a small number of samples. Copyright © 2005 John Wiley & Sons, Ltd.