Radabs: Calculates radiation absorbed by an organism

In ilyamaclean/microctools: Various worker functions for microclimc package

Calculates radiation absorbed by an organism

Description

calculates the sum of long and shortwave radiation absorbed by and organism

Usage

Radabs(
  dni,
  dif,
  si,
  tair,
  tground,
  l,
  d,
  theta,
  refsw = 0.5,
  em = 0.97,
  lwta = 0.5,
  lwtg = 1,
  galb = 0.15,
  shape = "spheroid",
  suspended = FALSE
)

Arguments

dni	Flux density of beam radiation perpendicular to the solar beam (W / m2)
dif	Flux density of beam radiation perpendicular to the solar beam (W / m2) (see difprop())
si	Solar coefficient as returned by solarcoef()
tair	temperature of air surrounding organism (deg C)
tground	temperature of ground surface (deg C)
l	length or organism (m) along longitudinal axis
d	diameter (m) of organism
theta	angle between longitudinal axis of organism and sun as returned by thetangle
refsw	reflectivity of organism (shortwave radiation)
em	emissivity of organism (longwave radiation)
lwta	fraction of longwave radiation transmitted downward (see canlw(). 1 - sky emissivity if no canopy cover.
lwtg	fraction of longwave radiation transmitted upward (see canlw(). Determined by canopy below organism. Ignored if suspended = FALSE.
shape	one of spheroid (prolate spheroid), cylinder1 (cylinder with flat ends) or cylinder2 (cylinder with hemisphere ends) or plate (flat plate - e.g. leaf)
suspended	optional logical indicating whether organism is suspended in free air (single leaves, organisms with spindly legs) or on the surface (whole canopies, organisms resting on the ground)

Details

The returned value is the flux density (i.e. radiation absorbed per metre squared). To convert to total flux, multiply by surface area of organism.

Value

Flux density of absorbed radiation (see details)

ilyamaclean/microctools documentation built on Jan. 25, 2023, 5:29 a.m.