That's pretty much correct. See the function wxformulas.sealevel_pressure_Metric()
-tk On Sat, Mar 11, 2017 at 7:25 AM, wysiwyg <[email protected]> wrote: > Hello Tom, > > My question is more related to understand theoritical calculations :-) > Weewx works perfectly ! > > but I try to understand what is done in stdWXCalculate. > > I may have misunderstand, but my understanding is that calculation is: > > barometer = pressure / exp (-elev_meter / (t_K * 29.263)) > > is this correct? > t_K is current temp in Kelvin or ? > > > > > > > > > > Le samedi 11 mars 2017 16:13:10 UTC+1, Tom Keffer a écrit : >> >> As explained in the weewx Wiki, *barometer* depends on the temperature >> 12 hours ago, but *altimeter* does not. >> >> If your station emits *pressure*, that is, the raw gauge pressure, the >> others should be calculated by StdWXCalculate. Is that not happening? >> >> -tk >> >> On Sat, Mar 11, 2017 at 2:49 AM, wysiwyg <[email protected]> wrote: >> >>> ok, I found some more informations. >>> >>> The formula here: >>> https://barani.biz/apps/sea-level-pressure/ >>> >>> seems to be a so called "international barometric leveling formula" >>> >>> at least, it's stated with this name in french wikipedia >>> https://fr.wikipedia.org/wiki/Formule_du_nivellement_barom%C3%A9trique >>> >>> >>> I was not able to find it as clear in english wiki >>> https://en.wikipedia.org/wiki/Barometric_formula >>> >>> >>> >>> -- >>> 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]. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > 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]. > For more options, visit https://groups.google.com/d/optout. > -- 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]. For more options, visit https://groups.google.com/d/optout.
