photobiologySun (version 0.5.0)

sun_hourly_august.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 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.

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)

• spct.idx factor with one level per spectrum

The data set includes NAs for missing night-time spectral irradiance values.

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