2. Model Development: A User's Perspective

  1. R. P. C. Morgan1 and
  2. M. A. Nearing2
  1. R. P. C. Morgan

Published Online: 5 JAN 2011

DOI: 10.1002/9781444328455.ch2

Handbook of Erosion Modelling

Handbook of Erosion Modelling

How to Cite

Morgan, R. P. C. (2010) Model Development: A User's Perspective, in Handbook of Erosion Modelling (eds R. P. C. Morgan and M. A. Nearing), John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9781444328455.ch2

Editor Information

  1. 1

    National Soil Resources Institute, Cranfield University, UK

  2. 2

    USDA-ARS, Southwest Watershed Research Center, USA

Author Information

  1. National Soil Resources Institute, Cranfield University, UK

Publication History

  1. Published Online: 5 JAN 2011
  2. Published Print: 22 DEC 2010

ISBN Information

Print ISBN: 9781405190107

Online ISBN: 9781444328455



  • model development - a user's perspective;
  • potential user of erosion models, bewildering choice - selecting the best model for a particular purpose;
  • users, gaining an appreciation - to operate the model software unaided, or needing expert advice to meet their requirements;
  • model, simplification of reality - for users, creating an immediate theoretical issue;
  • simplification, at three levels - black-box, grey-box and white-box models;
  • Universal Soil Loss Equation (USLE);
  • Meyer and Wischmeier's work (1969) - setting objectives, conceptual framework for erosion modelling;
  • complex process-based models - using separate equations, and processes of erosion and deposition;
  • USLE, predicting rate of mean annual erosion - operating on factors, average condition of study area;
  • detailed process-based models like WEPP and EUROSEM - data-hungry than grey-box models, like USLE or MMF


This chapter contains sections titled:

  • Introduction

  • Some Fundamentals

  • Conceptual Framework

  • Operating Equations

  • Spatial Considerations

  • Temporal Considerations

  • Temporal and Spatial Scale Interactions

  • Testing, Calibration and Validation

  • Some Practicalities

  • Acronyms

  • References