5.3 bucket.aml

This AML generates a soil bucket grid as used in the site water balance (SWB) model. The following equation was used to calculate the soil bucket size from soil property grids (see soilprop.aml). Soil property grids were derived from topographic position (see toposcale.aml and topoclass.aml) and surface geology classes (see geoclass.aml):
where: D = soil depth (meter), SSMC = specific soil moisture holding capacity (mm/m) and CFC = coarse fragment content (%). SSMC represents the difference between field capacity and permanent wilting point of specific soil textures, reflecting differences in pore volume and pore diameter distributions by texture.

See Roberts et al. (1993) for further information. Alternatively, you can check the following two web sites:
- http://www.nr.usu.edu/~dvrbts/laasim/laasim.html
- http://www.wsl.ch/staff/niklaus.zimmermann/biophys.html
 
 
 

General specifications of the AML:

Command: &r  bucket     (at GRID prompt)
Required input: Grids of SSMC, Depth, and CFC
Output units: Grids of bucket size
Speed of calculations: Rather fast
Flexibility of the routine: Medium; user can adjust AML at interface
User interface: Limited, but simple and easy
Known errors:  -
Programmer N.E. Zimmermann
Download: bucket.aml       (use: "save link as")
Contact: niklaus.zimmermann @ wsl.ch

 

References: 
 

Roberts, D.W., Fisher, R.F., Long, J.M. and Jack, S.N., 1993. The Leaf Area Allocation Model. Final Report for EPA Cooperative Agreement #817539.
 
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Last Updated: 9/08/00
By Niklaus E. Zimmermann