photon_irradiance: Photon irradiance

In photobiology: Photobiological Calculations

Photon irradiance

Description

This function returns the photon irradiance for a given waveband of a radiation spectrum, optionally applies a BSWF.

Usage

photon_irradiance(
  w.length,
  s.irrad,
  w.band = NULL,
  unit.in = "energy",
  check.spectrum = TRUE,
  use.cached.mult = FALSE,
  use.hinges = getOption("photobiology.use.hinges", default = NULL)
)

Arguments

w.length	numeric vector of wavelength [nm].
s.irrad	numeric vector of spectral irradiances in [W\,m^{-2}\,nm^{-1}] or [mol\,s^{-1}\,sm^{-2}\,nm^{-1}] as indicated by the argument pased to unit.in.
w.band	waveband.
unit.in	character Allowed values "energy", and "photon", or its alias "quantum".
check.spectrum	logical Flag telling whether to sanity check input data, default is TRUE.
use.cached.mult	logical Flag telling whether multiplier values should be cached between calls.
use.hinges	logical Flag indicating whether to insert "hinges" into the spectral data before integration so as to reduce interpolation errors at the boundaries of the wavebands.

Value

A single numeric value with no change in scale factor: [mol\,s^{-1}\,sm^{-2}].

See Also

Other low-level functions operating on numeric vectors.: as_energy(), as_quantum_mol(), calc_multipliers(), div_spectra(), energy_irradiance(), energy_ratio(), insert_hinges(), integrate_xy(), interpolate_spectrum(), irradiance(), l_insert_hinges(), oper_spectra(), photon_ratio(), photons_energy_ratio(), prod_spectra(), s_e_irrad2rgb(), split_energy_irradiance(), split_photon_irradiance(), subt_spectra(), sum_spectra(), trim_tails(), v_insert_hinges(), v_replace_hinges()

Examples

with(sun.data, photon_irradiance(w.length, s.e.irrad))
with(sun.data, photon_irradiance(w.length, s.e.irrad, new_waveband(400,700)))

photobiology documentation built on June 8, 2025, 10:14 a.m.