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A dataset containing the wavelengths at a 1 nm interval and the corresponding spectral (energy) irradiance and spectral photon irradiance. Values simulated for 22 June 2010, near midday, at Helsinki, under partly cloudy conditions. The variables are as follows:

Usage

sun.spct

sun.data

Format

A source_spct object and a data.frame, each with 511 rows and 3 variables

An object of class data.frame with 508 rows and 3 columns.

Details

  • w.length (nm), range 293 to 800 nm.

  • s.e.irrad (W m-2 nm-1)

  • s.q.irrad (mol m-2 nm-1)

Note

Package 'photobiologySun' contains data sets for the daylight spectrum under different conditions in and outside vegetation, stored in objects of these same classes, ready to be used with package 'photobiology'.

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

Author

Anders K. Lindfors (data)

Examples

sun.spct
#> Object: source_spct [522 x 3]
#> Wavelength range 280-800 nm, step 0.9230769-1 nm 
#> Label: sunlight, simulated 
#> Measured on 2010-06-22 09:51:00 UTC 
#> Measured at 60.20911 N, 24.96474 E; Kumpula, Helsinki, FI 
#> Variables:
#>  w.length: Wavelength [nm]
#>  s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#>  s.q.irrad: Spectral photon irradiance [mol s-1 m-2 nm-1] 
#> --
#> # A tibble: 522 × 3
#>    w.length s.e.irrad s.q.irrad
#>       <dbl>     <dbl>     <dbl>
#>  1     280          0         0
#>  2     281.         0         0
#>  3     282.         0         0
#>  4     283.         0         0
#>  5     284.         0         0
#>  6     285.         0         0
#>  7     286.         0         0
#>  8     286.         0         0
#>  9     287.         0         0
#> 10     288.         0         0
#> # ℹ 512 more rows
summary(sun.spct)
#> Summary of source_spct [522 x 3] object: sun.spct
#> Wavelength range 280-800 nm, step 0.9230769-1 nm
#> Label: sunlight, simulated 
#> Measured on 2010-06-22 09:51:00 UTC 
#> Measured at 60.20911 N, 24.96474 E; Kumpula, Helsinki, FI 
#> Variables:
#>  w.length: Wavelength [nm]
#>  s.e.irrad: Spectral energy irradiance [W m-2 nm-1]
#>  s.q.irrad: Spectral photon irradiance [mol s-1 m-2 nm-1] 
#> --
#>     w.length       s.e.irrad        s.q.irrad        
#>  Min.   :280.0   Min.   :0.0000   Min.   :0.000e+00  
#>  1st Qu.:409.2   1st Qu.:0.4115   1st Qu.:1.980e-06  
#>  Median :539.5   Median :0.5799   Median :2.929e-06  
#>  Mean   :539.5   Mean   :0.5160   Mean   :2.407e-06  
#>  3rd Qu.:669.8   3rd Qu.:0.6664   3rd Qu.:3.155e-06  
#>  Max.   :800.0   Max.   :0.8205   Max.   :3.375e-06