extract_mean: Create a NetCDF file with the surface mean

In eva3dm: Evaluation of 3D Meteorological and Air Quality Models

Create a NetCDF file with the surface mean

Description

Read and calculate the mean value of a variable from a list of wrf output files.

Usage

extract_mean(
  filelist,
  variable = "o3",
  field = "4d",
  prefix = "mean",
  units = "ppmv",
  meta = TRUE,
  filename,
  verbose = TRUE
)

Arguments

filelist	list of files to be read
variable	variable name
field	'4d' (default), '3d', '2d' or '2dz' see notes
prefix	to output file, default is serie
units	units on netcdf file (default is ppmv)
meta	use Times, XLONG and XLAT data (only works with 2d variable for file)
filename	name for the file, in this case prefix is not used
verbose	display additional information

Value

No return value

Note

The field argument '4d' / '2dz' is used to read a 4d/3d variable droping the 3rd dimention (z).

Examples

dir.create(file.path(tempdir(), "MEAN"))
folder <- system.file("extdata",package="eva3dm")
wrf_file <- paste0(folder,"/wrf.day1.o3.nc")
extract_mean(filelist = wrf_file,prefix = paste0(file.path(tempdir(),"MEAN"),'/mean'))

eva3dm documentation built on April 4, 2025, 5:11 a.m.