10 Dec 2021
10 Dec 2021
Status: this preprint is currently under review for the journal GI.

The Soil heat flow sensor functioning checks, imbalances’ origins and forgotten energies

Bartosz Marian Zawilski Bartosz Marian Zawilski
  • CESBIO Université de Toulouse, CNES, CNRS, INRA, IRD, UPS, Toulouse, 31000, France

Abstract. Soil heat flux is an important component of the Surface Energy Balance (SEB) equation. Measuring it require an indirect measurement. Every used technique may present some possible errors tied with each specific technique, soil inhomogeneities or physicals phenomenon such as latent heat conversion beneath the plates especially in a desiccation cracking soil or vertisol. The installation place may also induce imbalances. Finally, some errors resulting from the physical sensor presence, vegetation presence or soil inhomogeneities may occur and are not avoidable. For all these reasons it is important to check the validity of the measurements. One quick and easy way is to integrate results during one year. The corresponding integration should be close to zero after a necessary geothermal heat efflux subtraction which should be included into the SEB equation for long term integrations. However, below plate evaporation and vegetation absorbed water or rainfall water the infiltration may also contribute to the observed short scale or/and long scale imbalance. Another energy source is usually not included in the SEB equation: the rainfall or irrigation. Yet its importance for a short- and long-term integration is notable. As an example, the most used sensors: Soil Heat Flux Plates (SHFP), is given.

Bartosz Marian Zawilski

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • AC1: 'Sign error equation 6', Bartosz Zawilski, 13 Dec 2021
  • RC1: 'Comment on gi-2021-34', Leonardo Montagnani, 08 Jan 2022
    • AC3: 'Reply on RC1', Bartosz Zawilski, 13 Apr 2022
  • AC2: 'Comment on gi-2021-34', Bartosz Zawilski, 12 Jan 2022
  • RC2: 'Comment on gi-2021-34', Anonymous Referee #2, 04 Apr 2022
    • AC4: 'Reply on RC2', Bartosz Zawilski, 13 Apr 2022

Bartosz Marian Zawilski

Bartosz Marian Zawilski


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Short summary
Surface Energy Balance (SEB) closure check and important environmental variables monitoring require soil heat flux measurement. On one hand every experimental technique has its possible errors and need to be checked and corrected. On the other hand, SEB equation should include all sensed energy sources and sinks.