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EarthSystemDiagnostics / cpt-picarr

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output temperature and water level #10

Closed twollnik closed 5 years ago

twollnik commented 5 years ago

Ich als Ing (Melanie) moechte (Temperatur in der Cavity) und Wasser! ausgegeben haben.

twollnik commented 5 years ago

open question: From where can this data be obtained?

thomas-muench commented 5 years ago

The water level (= vapour concentration in the measurement cavity) is written to the output files.

I am not sure whether the temperature value in the cavity is also written to the files and if yes, which variable name it has. To be sorted out.

thomas-muench commented 5 years ago

Regarding the water level:

This is also a measure for the goodness of an injection. If the water level is outside some tolerance (thus either too low or too high) it is likely that the measurement value is also bad. It is often said that the optimal range for the water level is between 18000 and 22000 ppm.

twollnik commented 5 years ago

@thomas-muench Thank you for the answer. Should this information be displayed alongside the other plots?

thomas-muench commented 5 years ago

I think so. Monitoring the water level is also important to check if the device is leaking or whether there are problems with the pressure of the carrier gas.

Maybe these plots should not be shown by default but can be selected in addition to the standard quality control graphs.

twollnik commented 5 years ago

@thomas-muench todo

thomas-muench commented 5 years ago

As discussed above, water vapour concentration values need to be output/shown.

Regarding the cavity temperature: I checked back with Melanie about this, and it turned out that the cavity temperature is not written directly to the output measurement file from the Picarro, but only to some additional log file, from where values could be matched via the time stamp of the injection. Since reading in another file would complicate the entire work flow, it is decided to not analyse this information for now.

twollnik commented 5 years ago

Great, less work for us :)

Do we still need this issue then?

thomas-muench commented 5 years ago

Yes, as a reminder for the water vapour level stuff; i.e. using the piccr-supplied water level information for plots on the Processing page (if there is no separate issue for this).

twollnik commented 5 years ago

Isn't the water level already being displayed in a plot?

thomas-muench commented 5 years ago

Yes, it is. I have just only re-loaded the new Cpt-Picarr server version and still need to analyse the plotting page. But looks very nice from the first viewing! So there might still be s.th. done regarding the water level stuff, so leave this issue open for the time being, please.

twollnik commented 5 years ago

I'm glad to hear that :tada:

Yes, will leave it open.