Possible things for the future

[bpbond]

Originally from #6 :

• [ ] Flag observations/fluxes below detection limit [this may be a downstream thing]
• [ ] Identifying ebullition events - how? - possible before/after slope changes <-- a segmented model?

[bpbond]

Re ebullition events:

We have gone back through all the raw data and especially the larger fluxes and fluxes with poor linearity and we are confident that our data do not include episodic ebullition events. It is possible that these plots were experiencing steady state ebullition events, as described in Green and Baird, 2013.

Green, S.M. & Baird, A.J. (2013). The importance of episodic ebullition methane losses from three peatland microhabitats: a controlled-environment study. European Journal of Soil Science, 64, 27- 63.

Re curvilinear concentrations in GHG concentrations:

Pirk et al., 2016 discuss how curvilinear data can be the result of wind driven chamber leakage or gas concentration gradients. This tended to occur in our case when fluxes were high, and so we surmise that the gas concentration gradient was a likely cause but this was a rare phenomenon, happening 10 times throughout the 2 years and ~900 flux measurements, representing ~1% of the data.

Pirk, N., Mastepanov, M., Parmentier, F.-J. W., Lund, M., Crill, P., & Christenen, T.R. (2016). Calculations of automatic chamber flux measurements of methane and carbon dioxide using short time series of concentrations. Biogeosciences, 13, 903-912. doi:10.5194/bg-13-903-2016

Note to self: this is from 2022JG007271R.

FYI, might be useful @wilsonsj100