Standardise meteorological variable names and units for AEME

Attempts to match column names in a meteorological data frame to AEME standard variable names using guess_aeme_vars(), then detects the likely input units of each variable from its values and converts to the units expected by the package.

Usage

standardise_met(met, verbose = TRUE)

Arguments

met

data.frame; meteorological data with a Date column and one or more meteorological variable columns.

verbose

logical; if TRUE (default), emit cli_inform messages describing each detected unit conversion applied. Set to FALSE for quiet operation inside pipelines.

Value

The input data frame with column names remapped to AEME standard names and values converted to AEME standard units where a conversion was necessary. Columns that could not be matched are retained unchanged with a warning. A warning is also emitted if any required variable (MET_radswd, MET_tmpair, MET_wndspd, MET_pprain) is absent after renaming.

AEME standard variables and units

Variable	Name	Unit	Required
Shortwave radiation	MET_radswd	W/m²	Yes
Air temperature	MET_tmpair	°C	Yes
Wind speed	MET_wndspd	m/s	Yes
Rainfall	MET_pprain	mm/day	Yes
Snowfall	MET_ppsnow	mm/day	No (defaults to 0)
u wind component	MET_wnduvu	m/s	No (derivable)
v wind component	MET_wnduvv	m/s	No (derivable)
Sea-level pressure	MET_prmslp	Pa	No (derivable)
Station pressure	MET_prsttn	Pa	No (derivable)
Cloud cover	MET_cldcvr	1 (fraction)	No (derivable)
Longwave radiation	MET_radlwd	W/m²	No (derivable)
Dew point temp.	MET_tmpdew	°C	No (derivable)
Vapour pressure	MET_prvapr	hPa	No (derivable)
Relative humidity	MET_humrel	\ Wind direction	MET_wnddir