Esben Almqvist wrote: > Hi Metro developers! > > How would one go about to include the effect of salting in the model. > It should be possible to lower the freezing point, but it is difficult > to know how much and for how long. The amount of salt may vary from > when the model is started until it has reached the last forecast hour, > so it is not always possible to have the freezing point as a constant. > What are the thoughts about this? Is there a module to handle this > type of problem? > Best regards, > Esben > > > Hi Esben,
There is currently no way to handle this in METRo. You can manually change the value in the macadam.c file and recompile (line 190, "double dFp=0.0", FP standing for freezing point). It is possible to modify METRo to do what you want to do. However, this would need a lot of parametrization. We would need to modify the input format of METRo (or add an option that permits to use this option). You would need either to provide a freezing point "forecast" or modify the fortran model to dynamically compute the freezing point (based on the salt type, concentration?). If you want to add a freezing point forecast, it can be done. The computation of dynamic freezing point needs a lot of information and I am not sure we want to go this way. Regards, Miguel -- Miguel Tremblay Physicien - Physicist Centre météorologique canadien - Canadian meteorological centre (CMC) Environnement Canada - Environment Canada http://www.ec.gc.ca/ 2121 Trans-Canada N. Suite 228 Téléphone/Phone: 514-421-4729 Dorval, Québec Fax: 514-421-4679 CANADA H9P 1J3 courriel/email: [EMAIL PROTECTED] _______________________________________________ METRo-developers mailing list [email protected] https://mail.gna.org/listinfo/metro-developers
