4. Simulation of surface wetness duration
What is the basis for simulation of SWD?
What simulation models have been developed?
What SWD simulation models are available on
the web?
Can simulation models be used in
combination with off-site (remote) data?
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What is the basis for simulation of SWD?
As was noted in the discussion the theoretical standard, SWD can also be estimated by simulation model.
Physically based suimulation models function as a water
budget. The
surface energy balance governs additions or subtractions to the
budget.
What simulation models have been developed?
Read about the work on leaf wetness duration in Germany (Hoppmann and Wittisch)
There are also empirical SWD simulation models and those based on neural networks. For neural networks see the references by Chtioui et al. and Francl
What SWD simulation models are available on the web?
The SWEB model can be downloaded
SWEB model as Excel spreadsheet
Description of SWEB
Other models such as the Pedro and Gillespie dew model are
currently in use.
Can simulation models be used in combination with off-site (remote) data?
Yes, but the off-site data may not have the required accuracy for all models.
See here for a discussion of this topic
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