Unit conversion coefficient for fluxes — flux

calculates the conversion coefficient for flux_calc

Usage

flux_units(
  flux_units,
  conc_units,
  conc_units_list = c("mmol/mol", "ppm", "ppb", "ppt"),
  amount_units = c("mol", "mmol", "umol", "nmol", "pmol"),
  surface_units = c("m2", "dm2", "cm2"),
  time_units = c("d", "h", "mn", "s")
)

Arguments

flux_units: desired units for the calculated fluxes. Has to be of the form amount/time/surface. Amount can be mol, mmol, umol, nmol or pmol. Time can be d (day), h (hour), mn (minute) or s (seconds). Surface can be m2, dm2 or cm2.
conc_units: units of gas concentration mmol/mol, ppm, ppb or ppt.
conc_units_list: list of possible units for gas concentration.
amount_units: list of possible units for amount.
surface_units: list of possible units for surface.
time_units: list of possible units for time.

Value

A single numerical to multiply flux values with to convert units.

Details

The conversion is done from umol/s/m2 and gas concentration measured in ppm.

Examples

flux_units("mol/m2/mn", "ppm")
#> [1] 6e-05