There is an XType extension providing GDD and other related parameters : https://github.com/roe-dl/weewx-GTS
Le mardi 18 février 2025 à 05:46:04 UTC+1, Andrew McGinnis a écrit : > There's a dearth of information on Growing Degree Days (GDD) for weewx. > Hopefully someone out there has done it. > > I see the [StdReport] [[Units]] [[[Groups]]] > 'group_degree_day', of > which 'growdeg' is a member. > https://weewx.com/docs/5.1/reference/units/?h=growdeg > > And I see [StdReport] [[Units]] [[[DegreeDays]]] > 'growing_base = 50.0, > degree_F' > > https://weewx.com/docs/5.1/reference/skin-options/units/?h=grow#growing_base > > And that's about it in terms of references to GDD. > > GDD is a pretty simple calculation, done either with the average of (daily > High and daily Low) or the mean daily temperature, minus the base > temperature of 32F/0C for cool season zones or 50F/10C for warm season > zones. > There's an If/Else logic required to handle GDD that would be negative, > where IF(((HiF + LoF)/2)-50F) < 0, GDD = 0, ELSE GDD = ((HiF + LoF)/2)-50F) > > [ or alternately, just $day.outTemp.avg - growing_base ] > > Within weewx, I can find $day.outTemp.avg, but how would I pull out GDD > for use in any of my templates? Is 'growdeg' available as a > software-derived observation and I'm just overlooking it, or is it > something I have to make in say, [[StdCalibrate]] > [[[Corrections]]] ? > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/weewx-user/99b72d4b-c341-4428-969e-07fa50f2fbe6n%40googlegroups.com.
