effective_depth#

hydrometlib.cosmos.effective_depth(cosmos_vwc, ref_soc, ref_bulkdensity, ref_latticewater)[source]#

Original effective depth calculation from SIMPLE VWC method [cm]

\[d = \frac{5.8}{\rho_b \, (\theta_{lw} + \theta_{soc}) + \dfrac{\theta_v}{100} + 0.0829}\]

where \(\rho_b\) is ref_bulkdensity, \(\theta_{lw}\) is ref_latticewater, \(\theta_{soc}\) is ref_soc and \(\theta_v\) is the VWC in percent.

References

  • Franz TE, Zreda M, Rosolem R, Ferre TPA. (2013) A universal calibration function for determination of soil moisture with cosmic-ray neutrons. Hydrology and Earth System Sciences 17: 453-460. DOI:10.5194/hess-17-453-2013

  • COSMOS-UK User Guide; Section 7.4 The CRNS footprint (compares this effective depth calculation against the D86 footprint depths now used operationally): https://cosmos.ceh.ac.uk/sites/default/files/2024-12/COSMOS-UK_User_guide_v3_08_0.pdf

Parameters:

  • cosmos_vwc (Expr) – Volumetric Water Content (soil moisture) [%]

  • ref_soc (Expr) – Site attribute of reference soil organic carbon [g g-1]

  • ref_bulkdensity (Expr) – Site attribute of reference soil bulk density [g cm-3]

  • ref_latticewater (Expr) – Site attribute of reference lattice water content [g g-1]

Return type:

Expr

Returns:

Expression or Series calculating effective depth [cm]