ffi_hm1981 {fluxfinder} | R Documentation |
Compute flux using nonlinear Hutchinson and Mosier (1981) model
ffi_hm1981(time, conc, h = 1)
time |
Time values, numeric |
conc |
Gas concentration values, numeric |
h |
Effective chamber height |
Flux estimate; see references for more information.
Hutchinson, G. L. and Mosier, A. R.: Improved soil cover method for field measurement of nitrous oxide fluxes, Soil Sci. Soc. Am. J., 45, 311-316, 1981. doi:10.2136/sssaj1981.03615995004500020017x
# If data are approximately linear, then NA is returned
ffi_hm1981(cars$speed, cars$dist)
# If data are nonlinear (saturating) then flux based on gas diffusion theory
ffi_hm1981(Puromycin$conc, Puromycin$rate)