era5ify_bbox: Download and process ERA5 data for a bounding box

In varunayan: Download and Process 'ERA5', IMD, 'HadEX3' and 'CRU TS' Data

Download and process ERA5 data for a bounding box

Description

Download and process ERA5 data for a bounding box

Usage

ERA5ifyBbox(...)

era5ify_bbox(
  request_id,
  variables,
  start_date,
  end_date,
  north,
  south,
  east,
  west,
  dataset_type = "single",
  pressure_levels = NULL,
  frequency = "hourly",
  resolution = 0.25,
  save_raw = FALSE,
  output_dir = tempdir(),
  use_cache = TRUE,
  convert_units = TRUE,
  verbose = FALSE
)

Arguments

...	Arguments passed to the main function (used by aliases).
request_id	Unique identifier for the data request.
variables	List of ERA5 variables to download.
start_date	Start date in "YYYY-MM-DD" format.
end_date	End date in "YYYY-MM-DD" format.
north	Northern latitude boundary.
south	Southern latitude boundary.
east	Eastern longitude boundary.
west	Western longitude boundary.
dataset_type	Type of dataset ("single" or "pressure").
pressure_levels	Pressure levels for pressure dataset.
frequency	Temporal frequency ("hourly", "daily", "monthly").
resolution	Spatial resolution in degrees (default: 0.25).
save_raw	If TRUE, save the raw downloaded files.
output_dir	Directory for the saved files (default: tempdir()).
use_cache	If TRUE, use cached data when it is available (default: TRUE).
convert_units	If TRUE, convert units to user-friendly formats (default: TRUE). When TRUE, the function returns temperature variables in Celsius (converted from Kelvin). It returns precipitation variables in mm (converted from meters).
verbose	If TRUE, print detailed progress messages.

Value

data.frame with processed climate data. When convert_units = TRUE:

• Temperature variables (e.g., 2m_temperature): Celsius

• Precipitation variables (e.g., total_precipitation): mm

• Other variables: original ERA5 units

Examples

setup_cds_credentials(key = "your-cds-api-key")

data <- era5ify_bbox(
  request_id = "my_request",
  variables = c("2m_temperature", "total_precipitation"),
  start_date = "2023-01-01",
  end_date = "2023-01-31",
  north = 40, south = 35, east = -70, west = -75
)
# Temperature is in Celsius. Precipitation is in mm.

varunayan documentation built on Oct. 30, 2026, 1:07 a.m.