simplefmc: Finds the moisture content of dead leaf litter at a given...
In pzylstra/frame_r: Fire Research and Modelling Environment

simplefmc

R Documentation

Finds the moisture content of dead leaf litter at a given time-step

Description

Function uses the 'Single differential equation model' of Matthews et al (2010)

Usage

simplefmc(
  m,
  tAir = 293.46,
  vAir = 3.52,
  pAir = 101180,
  rhAir = 58,
  dt = 3600,
  insolation = 150,
  rhoLitter = 550,
  nelsonA = 5.2,
  nelsonB = -19,
  conLitter = 6e-04,
  sigma = 3000,
  EPS = 0.01
)

Arguments

`m`	The starting moisture (proportion ODW)
`tAir`	Atmospheric temperature (K)
`vAir`	Wind speed (m/s)
`pAir`	Atmospheric pressure (Pa)
`rhAir`	Relative humidity (Percent)
`dt`	Seconds per time step
`insolation`	Solar energy at the soil surface (kW/m2)
`rhoLitter`	Density of leaves (kg/m3)
`nelsonA`	Constant from Nelson FMC model
`nelsonB`	Constant from Nelson FMC model
`conLitter`	Litter conductance (m/s). Using value from Matthews spreadsheet rather than paper
`sigma`	Surface area: volume ratio of litter particles (m2/m3)
`EPS`	Sensitivity of iteration