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soil moisture input

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Ben C

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Jan 13, 2025, 12:40:49 PMJan 13
to SWAT+ Editor
Hello,

I would like to input soil moisture measurement data (for different depths, 20cm, 40cm, 60cm in %) into the SWAT model for simulation. Is it possible to do that in SWAT? anyone has done it before and share your procedures please? I really appreciate that. Thanks

-Ben

Mauricio Zambrano-Bigiarini

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Jan 15, 2025, 10:58:32 AMJan 15
to Ben C, SWAT+ Editor
El lun, 13 ene 2025 a la(s) 2:40 p.m., Ben C (kbc...@gmail.com) escribió:
Hello,

I would like to input soil moisture measurement data (for different depths, 20cm, 40cm, 60cm in %) into the SWAT model for simulation. Is it possible to do that in SWAT? anyone has done it before and share your procedures please? I really appreciate that. Thanks

Dear Ben,

As far as I know, it is not possible to add soil moisture (SM) data to be used directly as input data in SWAT+.

However, you can compare your observations to the  soil moisture outputs simulated by SWAT (e.g., Uniyal et al., 2017), although with some limitations; or you can implement (yourself) some data assimilation approach (e.g., Patil et al., 2017).


*) Uniyal, B., Dietrich, J., Vasilakos, C., & Tzoraki, O. (2017). Evaluation of SWAT simulated soil moisture at catchment scale by field measurements and Landsat derived indices. Agricultural Water Management193, 55-70. https://doi.org/10.1016/j.agwat.2017.08.002

*) Patil, A., & Ramsankaran, R. A. A. J. (2017). Improving streamflow simulations and forecasting performance of SWAT model by assimilating remotely sensed soil moisture observations. Journal of Hydrology555, 683-696. https://doi.org/10.1016/j.jhydrol.2017.10.058

Kind regards,

mzb


Mauricio Zambrano-Bigiarini, PhD
Associate Professor, Universidad de La Frontera
Associate Researcher, Centro FONDAP(CR)2
Teléfono: +56 45 259 2812
e-mail   : mauricio...@ufrontera.cl
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