Converting NOAA adjusted pressure back to station pressure

[CLutes]

We are running the Vantage Vue Weather Station with the Weather Link software. I have a large set of data for "Bar" which I believe has been collected with the default "NOAA" setting. I am looking for a way to convert it back to station pressure; or at least to something that has a constant offset. Can that be done with the Cumulus software? any other way?

In other words I don't care too much about the units of the pressure; what I am interested in is the actual change in pressure with time at the location of observation. I am trying to "undo" the temperature and humidity corrections.

[steve]

You can get the current station pressure from Cumulus, but it won't convert historical data. Cumulus uses some routines written by Steve Hatchett; he also provides a stand-alone app to do the conversion, but I think it will just do one value at a time - http://www.softwx.com/weather/vppressurecalc.html

His routines, if you want to write your own software to do it, are here - http://www.softwx.com/weather/uwxutils.html