extract_regime: Creata a NetCDF file with the ratio of FORM/(NO2 + O3)

In Schuch666/hackWRF: Functions to Work with WRF, NetCDF and Model Evaluation

Creata a NetCDF file with the ratio of FORM/(NO2 + O3)

Description

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

Usage

extract_regime(
  filelist,
  variable_mon = "form",
  variable_dem = c("no2", "o3"),
  field = "4d",
  prefix = "ratio",
  units = "",
  meta = T,
  filename,
  verbose = TRUE
)

Arguments

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

Note

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

ratio < 0.28, VOC-limited, +VOC emissions -> +O3 concentration

ratio > 0.28, NOx-limited, +NOx emissions -> +O3 concentration

References

Sillman, S. (1995). The use of NO y, H2O2, and HNO3 as indicators for ozone‐NO x‐hydrocarbon sensitivity in urban locations. Journal of Geophysical Research: Atmospheres, 100(D7), 14175-14188.

Schuch666/hackWRF documentation built on June 9, 2025, 1:46 p.m.