leafabs: Calculates radiation absorbed by leaf

In ilyamaclean/microclimc: Below or above canopy microclimate modelling with R

Calculates radiation absorbed by leaf

Description

Calculates the flux density of radiation absorbed by leaf.

Usage

leafabs(
  Rsw,
  tme,
  tair,
  tground,
  lat,
  long,
  PAI,
  pLAI,
  x,
  refls,
  refw,
  refg,
  vegem,
  skyem,
  dp = NA,
  merid = round(long/15, 0) * 15,
  dst = 0,
  clump = 0
)

Arguments

Rsw	Incoming shortwave radiation (W / m2)
tme	POSIXlt object of time(s)
tair	air temperature (deg C)
tground	ground temperature (deg C)
lat	latitude (decimal degrees)
long	longitude (decimal degrees)
PAI	Vector of plant area indices for each canopy layer
pLAI	Proportion of plant area that is green vegetation
x	the ratio of vertical to horizontal projections of leaf foliage
refls	reflectivity of green vegetation to shortwave radiation
refw	reflectivity of woody vegetation to shortwave radiation
refg	reflectivity of ground to shortwave radiation
vegem	emissivity of vegetation
skyem	sky emissivity
dp	proportion of Rsw that is diffuse radiation. If not provided, then calculated using microctools::difprop()
merid	optional longitude (decimal degrees) of the local time zone meridian (0 for GMT).
dst	optional value representing the time difference from the timezone meridian
clump	clumpiness factor for canopy (0-1)

Value

a list of with the following components:

aRsw absorbed Shortwave radiation (W / m2)

aRlw absorbed longwave radiation (W / m2)

ref mean area-wighted reflectivity of vegetation (green and woody)

ilyamaclean/microclimc documentation built on July 28, 2023, 1:40 a.m.