# Theory

- [Background](/sphy-manual/manual/sphy-manual-3.0/theory/background.md)
- [Modules](/sphy-manual/manual/sphy-manual-3.0/theory/modules.md)
- [Reference and potential evaporation](/sphy-manual/manual/sphy-manual-3.0/theory/reference-and-potential-evaporation.md)
- [Dynamic vegetation processes](/sphy-manual/manual/sphy-manual-3.0/theory/dynamic-vegetation-processes.md)
- [Snow processes](/sphy-manual/manual/sphy-manual-3.0/theory/snow-processes.md)
- [Glacier processes](/sphy-manual/manual/sphy-manual-3.0/theory/glacier-processes.md)
- [Soil water processes](/sphy-manual/manual/sphy-manual-3.0/theory/soil-water-processes.md)
- [Soil erosion processes](/sphy-manual/manual/sphy-manual-3.0/theory/soil-erosion-processes.md)
- [Routing](/sphy-manual/manual/sphy-manual-3.0/theory/routing.md)
