| ppfd_BF.data {photobiologySun} | R Documentation |
Ground level solar PAR photon irradiance, direct and diffuse (measured)
Description
Dataset containing mean, maximum, minimum and standard deviation values for total, direct and difusse photosynthetically active radiation expresed as photon irradiance. Each value is a summary 60 consecutive readings acquired once every second.
Usage
ppfd_BF.data
Format
A data frame with 24479 rows and 9 variables. variables.
Details
The variables are as follows:
time_EEST POSIXct Local time according to EET coordinates.
ppfd_tot_mean numeric (umol m-2 m-2)
ppfd_tot_min numeric (umol m-2 m-2)
ppfd_tot_max numeric (umol m-2 m-2)
ppfd_tot_sd numeric (umol m-2 m-2)
ppfd_diff_mean numeric (umol m-2 m-2)
ppfd_diff_min numeric (umol m-2 m-2)
ppfd_diff_max numeric (umol m-2 m-2)
ppfd_diff_sd numeric (umol m-2 m-2)
Note
Instrument used: Delta-T BF5 "quantum sensor" , mounted on tripod at approximately 2 m height. Data collected with a Campbell Scientific CR6 datalogger, using analogue outputs from the sensor. Wavelength sensitivity range of the quantum sensor is 400 nm to 700 nm. Location: Viikki campus of the University of Helsinki. Coordinates: 60.226803 N, 25.019205 E.
References
https://delta-t.co.uk/ https://www.campbellsci.com/