Get daytime VPD

Derive daily daytime VPD (vapour pressure deficit) from half-hourly data filtering hours where the shortwave incoming radiation (SW_IN_F) is greater than zero and aggregating taking the mean across remaining hours per day.

get_vpd_day_fluxnet2015_byfile(filename_hh, write = FALSE)

Arguments

filename_hh

A character string specifying the file name containing site-specific half-hourly data.

write

A logical specifying whether daiily daytime VPD should be written to a file.

Value

A data frame (tibble) containing daily daytime VPD.

Examples

if (FALSE) { # \dontrun{
df <- get_vpd_day_fluxnet2015_byfile(
  "./FLX_BE-Vie_FLUXNET2015_FULLSET_HH_1996-2014_1-3.csv"
  )
} # }