photobiologySun (version 0.5.1)

sun_hourly_ozone.spct: 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 May, at Jokioinen, Finland, under climatology-based mean ozone column and with a 20 'libradtran' assuming clear sky.

Usage

sun_hourly_ozone.spct

Format

A source_spct containing 32 spectra in long form (293 nm to 800 nm at 1 nm interval) and 6 variables.

Author

Anders K. Lindfors (radiation transfer modelling).

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).

• ozone Factor with two levels.

• sun.elevation Angle above the astronomical horizon (degrees).

• spct.idx factor with one level per spectrum.

The data set includes spectra for day-time, not 24 h.

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_ozone.spct)
wl_range(sun_hourly_ozone.spct)
getMultipleWl(sun_hourly_ozone.spct) # number of spectra