1. General Model Information



Main medium: terrestrial
Main subject: hydrology, agriculture
Organization level: Ecosystem
Type of model: partial differential equations (finite differences,1D), ordinary differential equations
Main application:
Keywords: soil, water,nitrogen, unsaturated, saturated, flow, solute transport, richards equation, hysteresis, convection-dispersion equation, complexation, first order decay


Rao, P.S.C.

University of Florida, Soil Science Department
2169 McCarty Hall, Gainesville, FL 32611


Rao, P.S.C.


NITROSIM is a one-dimensional finite difference model for transient simulation of vertical transport, plant uptake, and transformations of nitrogen in the rootzone. The model calculates nitrogen concentrations and fluxes. It can handle capillary rise, infiltration and evaporation and allows for hysteresis in soils. Transport and transformation processes included are advection, dispersion, ion exchange, oxidation/reduction reactions, complexation, and first-order chemical decay.

II. Technical Information

II.1 Executables:

Operating System(s): DOS, public domain

II.2 Source-code:

Programming Language(s): Programming Language(s): FORTRAN

II.3 Manuals:

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References

V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: Tue Sep 30 12:07:10 1997
Status of the document:
last modified by Tobias Gabele Wed Aug 21 21:44:46 CEST 2002

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