Process atmospheric composition data — process

The process_geos() function imports and cleans raw atmospheric composition data, returning a single SpatRaster object.

Usage

process_geos(
  date = c("2018-01-01", "2018-01-10"),
  variable = NULL,
  path = NULL,
  extent = NULL,
  ...
)

Arguments

date: character(1 or 2). Date (1) or start and end dates (2). Format YYYY-MM-DD (ex. September 1, 2023 = "2023-09-01").
variable: character(1). GEOS-CF variable name(s).
path: character(1). Directory with downloaded netCDF (.nc4) files.
extent: numeric(4) or SpatExtent giving the extent of the raster if NULL (default), the entire raster is loaded
...: Placeholders.

Value

a SpatRaster object;

Note

Layer names of the returned SpatRaster object contain the variable, pressure level, date, and hour.

Author

Mitchell Manware

Examples

## NOTE: Example is wrapped in `\dontrun{}` as function requires a large
##       amount of data which is not included in the package.
if (FALSE) { # \dontrun{
geos <- process_geos(
  date = c("2024-01-01", "2024-01-10"),
  variable = "O3",
  path = "./data/aqc_tavg_1hr_g1440x721_v1"
)
} # }