Hi Esben, Yes, the freezing point could be added as an optionnal input. We can do that. It is a big job but it should be a trivial task given the code architecture.
If really want to have this option and you will use it, we can add it in the next release of METRo (3.2.1). Miguel Esben Almqvist wrote: > Hi Miguel! > > Thank you for your answer. > I agree with you that metro should not compute the salt concentration > on the road. There are too many factors that need to be included in > the model to do this, i.e. salt type, salt amount, weather, traffic, > etc. A more feasible way is to include the freezing point (FP) in the > model. The FP can be calculated by a separate model provided by the user. > > I will need to insert a time series of FP in metro. To do this, the FP > will be a vector and not a constant. Can FP be indexed like the other > variables as a continuous variable? > Is it possible to insert the FP as wind direction and change FP before > it is used in the calculations? > > It would be a quite good idea to have the possibility to have an extra > variable in metro that can be used for testing different things. Now > the wind direction is not used, so it can be used, but it could be > named in a different way. > Best regards, > > Esben > > > --- Den *ons 2008-10-15 skrev Miguel Tremblay > /<[EMAIL PROTECTED]>/*: > > Från: Miguel Tremblay <[EMAIL PROTECTED]> > Ämne: Re: [Metro-developers] Salting > Till: "'[email protected]'" <[email protected]> > Datum: onsdag 15 oktober 2008 16.56 > > 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 > > > > ------------------------------------------------------------------------ > Går det långsamt? Skaffa dig en snabbare bredbandsuppkoppling. > Sök och jämför priser hos Kelkoo. > <http://www.kelkoo.se/c-100015813-bredband.html?partnerId=96914325> > ------------------------------------------------------------------------ > > _______________________________________________ > METRo-developers mailing list > [email protected] > https://mail.gna.org/listinfo/metro-developers > _______________________________________________ METRo-developers mailing list [email protected] https://mail.gna.org/listinfo/metro-developers
