Wind speed influences corrected Autocalibrated Soil Evapo-respiration Chamber (ASERC) evaporation measures

Abstract. Soil evaporation concerns water and our life support sources, which are important for agriculture or climate change prediction science. A simple instrument based on the nonsteady-state (NSS) technique soil measurement appears suitable. However, because NSS chamber is highly invasive, special care should be provided to correct wind speed influence process. a complex process that involves many air characteristics. Measurement installation its head deployment may perturb these We therefore had minimize differences measurements. Most of between bare with deployed can minimized, except influences not reproducible inside head. Meanwhile, as depend numerous variables monitorable in real time, self-calibrating corresponding protocol called Autocalibrated Evapo-respiration Chamber (ASERC) was developed make measurements easily corrigible unique variable (wind speed, WS), regardless composition, texture, other meteorological variables. followed by this allows us determine susceptibility (Z) achieving 0.95 coefficient determination. Some interesting findings sandy clayey measured during laboratory calibration “slow” sensor simulation will also reported two appendices.