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COMPASS-DOE / fluxfinder

File Parsing, Flux Computation, and Diagnostics of Greenhouse Gas Measurements
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Comparison with smart chamber fluxes #60

Closed bpbond closed 3 weeks ago

bpbond commented 3 months ago

@robertapeixoto suggested comparing Smart Chamber-computed fluxes with flux finder fluxes. Great idea!

comparison

Hmm...looks like we're off by 10x?!? 😕

I'm off for next 10 days, but logging this here for later.

robertapeixoto commented 3 months ago

In this case, we should double-check the unity transformation in fluxfinder. Another possibility is that Licor's calculation has a correction for water vapor. I tried to match our data with smart chamber using TIMESTAMP. I noticed that the code that transforms the .json file to .csv does not get a label (the unique ID from the smart chamber). Would it be easy to include it? The Licor-SoilFLuxPro unique ID is under the Li8200 label. We can return to these points after Jul 10th. I found other issues with volume calculation in the SoilFLuxPro that I want to spend more time checking. I had a few different collars offset but the same total volume!

wilsonsj100 commented 2 months ago

I agree with Roberta that it would definitely be helpful if the soilflux ID put in for the smart chamber was carried over.

bpbond commented 2 months ago

@wilsonsj100 @robertapeixoto I did some more investigating this morning, and the graph above is WRONG — I had messed things up. Here's the current comparison between Smart Chamber fluxes and fluxfinder fluxes:

comparison

Solid line is 1:1, dashed blue line is linear fit.

Licor's calculation has a correction for water vapor.

We're using the concentrations corrected for water vapor, so I think that's OK.

robertapeixoto commented 2 months ago

[celebrate] Bittencourt Peixoto, Roberta reacted to your message:

From: Ben Bond-Lamberty @.> Sent: Tuesday, July 16, 2024 2:59:09 PM To: COMPASS-DOE/fluxfinder @.> Cc: Bittencourt Peixoto, Roberta @.>; Mention @.> Subject: [EXTERNAL] Re: [COMPASS-DOE/fluxfinder] Comparison with smart chamber fluxes (Issue #60)

@wilsonsj100https://github.com/wilsonsj100 @robertapeixotohttps://github.com/robertapeixoto I did some more investigating this morning, and the graph above is WRONG — I had messed things up. Here's the current comparison between Smart Chamber fluxes and fluxfinder fluxes:

comparison.png (view on web)https://github.com/user-attachments/assets/138f7955-0ad0-4e70-8e10-cc2554dbd88b

Solid line is 1:1, dashed blue line is linear fit.

Licor's calculation has a correction for water vapor.

We're using the concentrations corrected for water vapor, so I think that's OK.

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