Jessica M. Rathke wrote: > In the atmospheric forecast file, does "snow precipitation quantity" > mean strictly snow or any frozen precipitation. The atmospheric > forecast model I am using does not predict snow, only liquid > precipitation. > > I am trying to determine if it is a "reasonable" assumption that if > the surface temp is below freezing, there is snow. If not, is there a > surface temp that is considered good "guidance" for snow? > > Thanks, > Jessica > > >
Hi Jessica, The difference between snow and rain inside the METRo model is that the snow precipitation is converted in amount of water by a 10 to 1 ratio (1 cm of snow = 1 mm of water). The precipitation type is also used to determine in which reservoir (water or snow/ice) the amount of precipitation should be added. The best approximation would probably be to put all the solid precipitation in the snow field. Regarding the relation between the surface temperature and the precipitation type, it is not that simple. You have to look at all the vertical profile to determine what is the precipitation type. 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, Quebec Fax: 514-421-4679 CANADA H9P 1J3 courriel/email: [EMAIL PROTECTED] _______________________________________________ METRo-developers mailing list [email protected] https://mail.gna.org/listinfo/metro-developers
