Jim Cowie wrote: > > Hi, > > If I understand correctly, the time zone information in the > station files for METRo is used to generate the sunrise/sunset > times for the idealized hourly solar flux at the site. If so, then > > 1) Is this needed only when cloud cover is used in the weather > forecast (ie; is time zone ignored when solar radiation is > supplied in the weather forecasts directly)? > > 2) Couldn't you also calculate the sunrise/sunset using latitude > longitude information which is also provided in the station > file? (Actually, wouldn't this be more accurate since lat/lon > is more precise and time zones cover broad areas?) > > We are concerned that it might be complicated locating METRo in > some areas due to time zone peculiarities (even in the US!). > > Thanks in advance for your comments. > > -jim > > -- > Jim Cowie > NCAR/RAL > [email protected] > 303-497-2831 > > > > _______________________________________________ > METRo-developers mailing list > [email protected] > https://mail.gna.org/listinfo/metro-developers > Hi Jim,
Sorry for the late answer, I was away for a while. The sunrise and sunset are computed using the lat/lon, not the timezone. The timezone is used to write the output of the roadcast in local time. Try it with different time-zone and will see that the output is not changed, only the local time of the roadcast. Cheers, Miguel -- Miguel Tremblay Coordonnateur national des services commerciaux - National coordinator, commercial services 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
