Jason, is the base unit adjusted for your station elevation? By convention barometric pressure is reported adjusted to a sea-level equivalent, and the 14 mb discrepancy you mention is suspiciously close to what the correction would be for 120 m elevation. Mercury barometers measure the absolute pressure directly and I think the elevation is generally applied through some kind of table lookup, not by adjusting the mercury height scale. Weewx makes the elevation correction automatically, based on the station elevation in the config file. In other words, the weewx reading may already be correct.
-Les >> On Oct 5, 2019, at 1:29 PM, p q <[email protected]> wrote: > > In weewx.conf, look for StdCalibrate > You'll want something like > pressure = pressure - 14 > >> On Sat, Oct 5, 2019 at 12:12 PM Jason <[email protected]> wrote: >> Is it possible to add a Barometer offset to weewx as my ftp upload shows >> presssure to be at 14 mb higher than what both my base unit and mercury >> Barometer shows. >> I believe Weewx shows real level pressure which is higher than what it is at >> my 120 meter high location. >> I have been thro all config entries etc and cannot find an answer >> -- >> 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 on the web visit >> https://groups.google.com/d/msgid/weewx-user/acdea1c1-f2de-43b6-a5dd-51df64c18de6%40googlegroups.com. > > > -- > Peter Quinn > (415)794-2264 > -- > 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 on the web visit > https://groups.google.com/d/msgid/weewx-user/CAA1SM20X8_ga%3D3r%3DVtHvYWinfOdys5OLEXMieU9VEAa5E2Uz1Q%40mail.gmail.com. -- 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 on the web visit https://groups.google.com/d/msgid/weewx-user/D2A20E02-1584-429C-8A9D-5D290888224E%40gmail.com.
