Dataset containing mean, maximum, minimum and standard deviation values for global radiation data expressed as (energy) irradiance. Values are summaries of 12 consecutive readings acquired once every 5 s. The data set covers 17 consecutive days.
Details
The variables are as follows:
time_EEST POSIXct Local time according to EET coordinates.
UTC POSIXct Local time according to UTC.
e_irrad_mean numeric (W m-2)
e_irrad_min numeric (W m-2)
e_irrad_max numeric (W m-2)
e_irrad_sd numeric (W m-2)
These data are part of a much larger data set (Aphalo, 2023). Instrument used: Kipp SMP3 smart pyranometer, factory calibrated, mounted on permanent tripod at approximately 2 m height. Data collected with a Campbell Scientific CR6 datalogger. Wavelength sensitivity range of the pyranometer is 300 nm to 2800 nm. Location: Viikki campus of the University of Helsinki. Coordinates: 60.226803 N, 25.019205 E.
References
Aphalo, Pedro J. (2023) High frequency weather data for Viikki, Helsinki, Finland. doi:10.17605/OSF.IO/E4VAU .
Examples
colnames(irrad_Kipp.data)
#> [1] "UTC" "time_EET" "e_irrad_mean" "e_irrad_max" "e_irrad_min"
#> [6] "e_irrad_sd"
nrow(irrad_Kipp.data)
#> [1] 24479
range(irrad_Kipp.data$time_EET)
#> [1] "2015-08-22 03:01:00 EEST" "2015-09-08 02:59:00 EEST"
where_measured(irrad_Kipp.data)
#> # A tibble: 1 × 3
#> lon lat address
#> <dbl> <dbl> <chr>
#> 1 25.0 60.2 Viikki, Helsinki, Finland
how_measured(irrad_Kipp.data)
#> [1] "Measured with Kipp & zonen SMP3 Pyranometer"
what_measured(irrad_Kipp.data)
#> [1] "Global energy irradiance (W m-2). One-minute means."
comment(irrad_Kipp.data)
#> [1] "Small subset of a data set published at https://osf.io/e4vau/ doi:10.17605/OSF.IO/E4VAU."