This ugly function is present out of necessity, and will only exist for as long as it is necessary. It is an internal correction within the NEONiso calibration routines that is required as there are some mismatches between the 'true' isotope reference values and those in the NEON HDF5 files. NEON is working on correcting this, and after it has been corrected, this function has no need to exist and will be immediately deprecated. As a result, this function is fairly messy but there is little incentive to improve it.
correct_carbon_ref_cval(
std_frame,
site,
omit_already_corrected = TRUE,
co2_tol = 5,
d13c_tol = 0.25
)A data.frame, based on std_frame, where NEON-supplied
reference values have been corrected if a mismatch has previously
been identified.
Standard data frame to perform swap on.
NEON four letter site code.
Should we attempt correction, if it's already been corrected in the raw files.
Tolerance to use to select co2 values that need to be replaced, in ppm. Default = 5 ppm.
Tolerance to use to select d13C values that need to be replaced, in ppm. Default = 0.25 per mil.
Rich Fiorella rfiorella@lanl.gov
Current sites and time periods affected: