derive_oxygen: Apply tau correction to oxygen voltage channel

In afsc-gap-products/gapctd: Process CTD data from bottom trawl surveys

Apply tau correction to oxygen voltage channel

Description

Tau correction following Edwards et al. (2010). Should be run after dynamic corrections to temperature and conductivity channels.

Usage

derive_oxygen(
  x,
  cal_rds_path = NULL,
  tau_correction = TRUE,
  aa = NA,
  bb = NA,
  cc = NA,
  ee = NA,
  soc = NA,
  Voffset = NA,
  tau20 = NA,
  d0 = NA,
  d1 = NA,
  d2 = NA,
  sig_digits = 4
)

Arguments

x	ctd object containing raw oxygen voltage data (rawOxygen).
cal_rds_path	Optional path to calibration parameter file.
tau_correction	Should the tau correction (Edwards et al., 2010) be used to account for time-dynamic errors in oxygen?
aa	Calibration parameter A
bb	Calibration parameter B
cc	Calibration parameter C
ee	Calibration parameter E
soc	Calibration parameter Soc
Voffset	Calibration parameter voltage offset
tau20	Tau correction calibration parameter Tau20.
d0	Tau correction calibration parameter D0.
d1	Tau correction calibration parameter D1.
d2	Tau correction calibration parameter D2.
sig_digits	Significant digits for oxygen (ml/l).

Value

ctd object with tau correction applied to oxygen voltage channel (oxygenRaw). Returns the input unchanged if no oxygen channel is detected.

Author(s)

Sean Rohan

References

Edwards, B., Murphy, D., Janzen, C., Larson, A.N., 2010. Calibration, response, and hysteresis in deep-sea dissolved oxygen measurements. J. Atmos. Ocean. Technol. 27, 920–931. https://doi.org/10.1175/2009JTECHO693.1 Garcia, H.E., Gordon, L.I., 1992. Oxygen solubility in seawater: Better fitting equations. Limnol. Oceanogr. 37, 1307–1312. https://doi.org/10.4319/lo.1992.37.6.1307

afsc-gap-products/gapctd documentation built on March 5, 2025, 3:42 a.m.