Dissolved greenhouse gas concentrations derived from the NEON dissolved gases in surface water data product (DP1.20097.001)

This dataset contains partial pressure and molar concentration of dissolved carbon
dioxide, methane, and nitrous oxide in 34 streams, rivers, and lakes calculated from
headspace equilibration samples collected by the National Ecological Observatory
Network (NEON). All input data were collected by NEON and is available on the NEON
data portal at https://data.neonscience.org. Specifically, in situ dissolved gas
concentrations were calculated from the air and headspace mixing ratios provided by
the NEON Dissolved gases in surface water data product (DP1.20097.001), adjusted for
sample and water temperature (DP1.20097.001, DP1.20264.001, DP1.20053.001),
barometric pressure (DP1.20097.001, DP1.00004.001), and alkalinity (DP1.20093.001).
The final set of inputs is found in the file, input_file, and the processing scripts
are available at https://github.com/kellyaho/NEON-GHG-processing. The file,
output_file, contains the raw outputs from running the input_file through the
processing scripts. There are three outputs for each gas for each sample, one for
each of three different pre-equilibration headspace mixing ratios (paired
atmospheric samples, loess smoothing of atmospheric samples, and site-specific
median). The file, GHG_final, contains the final dataset. This GHG_final uses the
outputs from output_file calculated with paired atmospheric samples, and substitutes
0.01 μatm, 0.001 μM, 0.001 μatm, and 0.001 μM for any negative instances of pCH4,
[CH4], pN2O, and [N2O], respectively. See methods for more detail. Please cite the
NEON data inputs (listed below), in addition to this dataset, when using the
data. NEON is sponsored by the National Science Foundation (NSF) and operated under
cooperative agreement by Battelle. This material is based in part upon work
supported by NSF through the NEON Program.