Soil Erosion Network: Model Metadata

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1 Model identification Soil Erosion Network - Model
1.1 Model name CSEP -Water Erosion
1.2 Most recent version 1.0
1.3 Date of release Latest version January 1995
2 Water erosion
3 Contact person
3.1 Name Professor Mike Kirkby
3.2 Address School of Geography
University of Leeds
3.3 Tel +44 113 233 3310
3.4 Fax +44 113 233 6758
3.5 Email
4 Model Author(s) Professor Mike Kirkby, N J Cox
5 Model components
5.1 Water erosion: Based on climate data only at present
5.2 Wind erosion: No
5.3 Hydrology: Point hydrological model, based on modified TOPMODEL inter alia
5.4 Site/topography: Regional scale DEM if available, but other scales may also be used
5.5 Plant growth: Model for generic living and soil biomass
5.6 Management: -
5.7 Soil: Local perameters for erodibility if available, with computed organic component
5.8 Chemistry: Organic soil component using C budget
5.9 Weather: Monthly data and distributions
6 Model characteristics
6.1 Spatial
6.1.1 Class of area: Regional to Global
6.1.2 Flow routing system: none at present
6.1.3 Minimum area: Hillslope
6.1.4 Maximum area: Global
6.2. Temporal
6.2.1 Timestep: Monthly, integrating over distributions
6.2.2 Single or multiple event? Integrated over distribution
6.2.3 Maximum simulation duration: Probably 108 years
7 Model's representation of processes
7.1 Water erosion processes
7.1.1 Interrill: Lumped
7.1.2 Rill: Ditto
7.1.3 Gully: Ditto
7.1.4 Streambank: -
7.1.5 Deposition: Not modelled at present: may be included when combined with DEM
7.2 Wind erosion processes: -
7.3 Hydrological processes:
7.3.1 Evaporation/transpiration: Preistly-Taylor (based on radiation) and soil moisture
7.3.2 Runoff: Single store model
7.3.3 Infiltration Not explicitly modelled
7.3.4 Subsurface flow: Implicit TOPMODEL
7.3.5 Return flow Ditto
7.4 Plant processes:
7.4.1 Light interception and photsynthesis: Beer's Law
7.4.2 Dry matter and residue Based on transpiration; respiration; leaf fall etc
7.4.3 Root growth: Not modelled separately from above
7.4.4 Pests: -
7.4.5 CO2 sensitivity: Not modelled at present
7.5 Soil: Multiple layer system; properties changes when layer eroded away
7.5.1 Crust development -
7.5.2 Aggregate properties -
7.6 Chemistry: Only for Carbon
7.6.1 Nutrients:
7.6.2 Carbon Used in logging organic soil accumulation and decomposition
7.6.3 Pesticides
7.6.4 Other contaminants
7.7 Weather: Distribution function (Gamma or 2 exponentials) for integrated total effect
8 Input Data (* = Mandatory)
8.1 Weather: Monthly values, with distribution data as available. Precipitation*, potential evapotranspiration of temperature*, cloudiness or sunshine hours*
8.2 Soil: Erodibility
8.3 Hydrology: Soil storage capacity (before runoff)*
8.4 Plant cover: Uncultivated or crop type*
8.5 Soil surface cover: Only if imposed
8.6 Management: for crops*
8.7 Topography/site characteristics: DEM if available
8.8 Micro-topography: -
9 Output data Runoff, sediment yeild, vegetation and organic soil biomass by month
10 Programming language Quick-BASIC
11 Computer requirements IBM Compatible PC
12 Documentation
12.1 Scientific documentation: Kirkby, M. J. and Cox, N. J. (in press, 1995). A climatic index for soil erosion potential (CSEP) including seasonal and vegetation factors. Catena Supplement.
12.2 User's guide: Not available
12.3 Technical documentation: Not available
13 Availability On request from author (Kirkby)
14 Other Relevant Information Undergoing further development

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