GetERA5DailyWetBulb: Download daily ERA5 wet bulb temperature data

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

Download daily ERA5 wet bulb temperature data

Description

This function downloads temperature and dewpoint data. Then it calculates RH and the wet bulb temperature.

Usage

GetERA5DailyWetBulb(
  request_id,
  start_date,
  end_date,
  json_file = NULL,
  north = NULL,
  south = NULL,
  east = NULL,
  west = NULL,
  resolution = 0.25,
  use_cache = TRUE,
  verbose = FALSE
)

get_era5_daily_wet_bulb(
  request_id,
  start_date,
  end_date,
  json_file = NULL,
  north = NULL,
  south = NULL,
  east = NULL,
  west = NULL,
  resolution = 0.25,
  use_cache = TRUE,
  verbose = FALSE
)

Arguments

request_id	Unique identifier for the data request
start_date	Start date in "YYYY-MM-DD" format
end_date	End date in "YYYY-MM-DD" format
json_file	Path to the GeoJSON file that defines the region
north, south, east, west	Bounding box coordinates (alternative to json_file)
resolution	Spatial resolution in degrees (default: 0.25)
use_cache	If TRUE, the function uses cached data (default: TRUE)
verbose	If TRUE, the function prints progress messages (default: FALSE)

Value

data.frame with date, latitude, longitude, temp_c, dewpoint_c, rh, wet_bulb

Examples

region <- system.file("extdata", "region.geojson", package = "varunayan")
wetbulb <- GetERA5DailyWetBulb(
  request_id = "india_wetbulb",
  start_date = "2023-05-01",
  end_date = "2023-05-31",
  json_file = region
)

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