Thanks Miguel.. Iain -----Original Message----- From: Miguel Tremblay [mailto:[email protected]] Sent: December 15, 2008 2:22 PM To: Iain Russell; METRo Developer Team Subject: Re: [Metro-developers] SSI Codes question
Iain Russell wrote: > Hi Miguel > > Can you comment on the physical reasoning for the METRo model only > distinguishing between dry >and wet observed road conditions, i.e. not being concerned about other road conditions ? >Is this something that you consider could be improved or is it considered adequate within >the scale of features that the model is intended to resolve ? > Sure. The energy balance model of METRo needs to know if there is water (solid/liquid state will be determined by surface temperature) present at the surface. This will have an impact on the transfert of energy. The model only needs to know wether the road is dry or wet to determine how this transfert is done. The same logic is applied for the road condition forecast by METRo. The physical model process everything and then, based on the value of the weather element and the quantity of water in the reservoir (liquid/solid), the road condition is deduced. If you want to have a look a it, see the RODCON subroutine in lib_therm.f file. 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
