Ground level spectral irradiance at hourly intervals
Source:R/example.solar.spectra.data.r
sun_hourly_june.spct.RdDatasets containing the wavelengths at 1.0 nm interval and tabulated values of spectral irradiance for the sun for 22 to 24 June 2010 in Helsinki, Finland.
Format
A source_spct containing 58 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
A summary of these data has been published in the article by Morales et al. (2013). The simulation methods has been described in Lindfors et al. (2009).
References
Morales, L. O.; Brosché, M.; Vainonen, J.; Jenkins, G. I.; Wargent, J. J.; Sipari, N.; Strid, A.; Lindfors, A. V.; Tegelberg, R. & Aphalo, P. J. (2013) Multiple roles for UV RESISTANCE LOCUS8 in regulating gene expression and metabolite accumulation in Arabidopsis under solar ultraviolet radiation. Plant Physiology, 161, 744-759
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_june.spct)
#> # A tibble: 58 × 3
#> E_Total spct.idx when.measured
#> <dbl> <chr> <dttm>
#> 1 17.7 spct.01 2010-06-22 01:51:40
#> 2 67.1 spct.02 2010-06-22 02:51:40
#> 3 105. spct.03 2010-06-22 03:51:40
#> 4 170. spct.04 2010-06-22 04:51:40
#> 5 178. spct.05 2010-06-22 05:51:40
#> 6 186. spct.06 2010-06-22 06:51:40
#> 7 225. spct.07 2010-06-22 07:51:40
#> 8 314. spct.08 2010-06-22 08:51:40
#> 9 269. spct.09 2010-06-22 09:51:40
#> 10 283. spct.10 2010-06-22 10:51:40
#> # ℹ 48 more rows
wl_range(sun_hourly_june.spct)
#> [1] 293 800
getMultipleWl(sun_hourly_june.spct) # number of spectra
#> [1] 58