What is the effect of temperature variation on ECHO probe output?
Recently, several studies have shown the temperature sensitivity of probes that measure the dielectric constant of soil. It is well known that the dielectric of water changes with temperature, but theories to explain temperature sensitivity of soil dielectric are relatively new. The ECHO probe has a maximum temperature sensitivity of ~ 0.003 m 3 m -3 per °C, similar to other sensors we tested and to data found in the literature.