mo_soil_moisture.f90 File Reference

Soil moisture of the different layers. More...

Go to the source code of this file.

Modules
module	mo_soil_moisture
	Soil moisture of the different layers.

Functions/Subroutines
subroutine, public	mo_soil_moisture::soil_moisture (processcase, frac_sealed, water_thresh_sealed, pet, evap_coeff, soil_moist_sat, frac_roots, soil_moist_fc, wilting_point, soil_moist_exponen, jarvis_thresh_c1, aet_canopy, prec_effec, runoff_sealed, storage_sealed, infiltration, soil_moist, aet, aet_sealed)
	Soil moisture in different soil horizons.
elemental pure real(dp) function, public	mo_soil_moisture::feddes_et_reduction (soil_moist, soil_moist_fc, wilting_point, frac_roots)
	stress factor for reducing evapotranspiration based on actual soil moisture
elemental pure real(dp) function, public	mo_soil_moisture::jarvis_et_reduction (soil_moist, soil_moist_sat, wilting_point, frac_roots, jarvis_thresh_c1)
	stress factor for reducing evapotranspiration based on actual soil moisture

Detailed Description

Soil moisture of the different layers.

Soil moisture in the different layers is calculated with infiltration as \( (\theta / \theta_{sat})^\beta \) Then evapotranspiration is calculated from PET with a soil water stress factor \( f_{SM} \) either using the Feddes equation - processCase(3) = 1:

\[ f_{SM} = \frac{\theta - \theta_\mathit{pwp}}{\theta_\mathit{fc} - \theta_\mathit{pwp}} \]

or using the Jarvis equation - processCase(3) = 2:

\[ f_{SM} = \frac{1}{\theta_\mathit{stress-index-C1}} \frac{\theta - \theta_\mathit{pwp}}{\theta_\mathit{sat} - \theta_\mathit{pwp}} \]

Authors

Matthias Cuntz, Luis Samaniego

Date

Dec 2012

Copyright

Copyright 2005-2024, the mHM Developers, Luis Samaniego, Sabine Attinger: All rights reserved. mHM is released under the LGPLv3+ license

The UFZ(CHS) mesoscale hydrologic model mHM is free software. You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the free Software Foundation either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You received a copy of the GNU Lesser General Public License along with the UFZ CHS mesoscale hydrologic model mHM. It can be found in the files COPYING and COPYING.LESSER provided with this software. The complete GNU license text can also be found at http://www.gnu.org/licenses/.

Definition in file mo_soil_moisture.f90.