Vertical correctors (water level and observation bias)

[brian-r-calder]

Most volunteer data doesn't have corrections applied for offsets between the echo sounder and water level, or for sound speed, or for water level changes. In many cases, the fundamental information for this isn't even available. Some functionality is therefore required to estimate the biases in the data, and to correct them as far as possible.

This includes:

• OpenVBI already has a water level correction abstract interface and an implementation for NOAA water level stations; augment this with the newly published CHS water level correction methods.
• Incorporate an observer bias correction (against reference data), e.g., from Klemm's method against BlueTopo, or Reputation Code (Calder, 2021).

[anthonyklemm]

I have recently tested integrating the AVISO FES2022b tide prediction model into my CSB Processing tool, using their ocean_tide_extrapolated harmonic constituent .nc files and their python API. The implementation (still in-work, and needs more validation) can be found here: link to github repo. (apologies, since we manage this code mostly via SVN, not github). I have not pushed these updates to the version in the Pydro distribution, since I don't have a solution yet for end-users to access the actual model .nc files.