| sun_hourly_august.spct {photobiologySun} | R Documentation |
Ground level spectral irradiance at hourly intervals
Description
Datasets containing the wavelengths at 1.0 nm interval and tabulated values of spectral irradiance for the sun for 21 and 22 August in Helsinki, Finland.
Usage
sun_hourly_august.spct
Format
A source_spct containing 31 spectra in long form (293 nm to
800 nm at 1 nm interval) and 4 variables w.length, s.e.irrad,
UTC, and spct.idx.
Details
The variables are as follows:
w.length numeric (nm)
s.e.irrad numeric (W m-2 nm-1)
UTC POSIXct (UTC date and time)
spct.idx factor with one level per spectrum
The data set includes NAs for missing night-time spectral irradiance values.
Note
The simualtion methods has been described in Lindfors et al. (2009).
Author(s)
Anders K. Lindfors (radiation transfer modelling)
References
Lindfors, A.; Heikkilä, A.; Kaurola, J.; Koskela, T. & Lakkala, K. (2009) Reconstruction of Solar Spectral Surface UV Irradiances Using Radiative Transfer Simulations. Photochemistry and Photobiology, 85: 1233-1239
Examples
e_irrad(sun_hourly_august.spct)
wl_range(sun_hourly_august.spct)
getMultipleWl(sun_hourly_august.spct) # number of spectra