Hi Iain,You will find in attachment an image (road_obs.png) showing the road forecast (lines) and the observation (circles).
Blue is for road temperature; Red is for air temperature; Green is for dew point;The places where you don't see a red circle is because dew point and air temperature are the same (TD is drawn after AT).
As you can see, the observed air temperature at the station is around 5°C less than forecasted.
I suggest you try to replace the air temperature and dew point in the atmospheric forecast file by those who were observed. Rerun METRo with this enhance atmospheric forecast and look at the result. Tell us the result and, if it not accurate enough and if you still have questions, we will continue our investigation.
Regards, Miguel Iain Russell wrote:
HiWe are finding that the METRo model (latest stable release, 3.1.0) is generating a road condition of melting snow with pavement forecast temperatures in the region of 16-17 C. Input data files can be provided if required, but as a summary, here are the input atmospheric forecast conditions , for a site in BC, Canada valid at 2200 GMT on 14^th March 2008;at 4 td -3 ra 0.3 sn 4.4 ws 7 ap 833 cc 6Pavement temperature of 16-17 C seems too high, for melting snow to be the road condition (i.e.we think that the snow would have to completely melt, then the road dry out, before the road temperature could get that high).Regards Iain_ _**Iain Russell** Manager, Content Development Pelmorex Media Inc. The Weather Network http://weather.ca/ MeteoMedia http://meteomedia.ca/ Tel: 905 829 1159 (1405) Fax: 905 829 5502 [EMAIL PROTECTED]------------------------------------------------------------------------ _______________________________________________ METRo-developers mailing list [email protected] https://mail.gna.org/listinfo/metro-developers
<<inline: road_obs.png>>
_______________________________________________ METRo-developers mailing list [email protected] https://mail.gna.org/listinfo/metro-developers
