ef_usa_moves: Running exhaust emissions factors for buses from United States (MOVES3 model)

Description

Returns a vector or data.frame of emission factors for urban buses based on values from the MOVES3 Model. Emission factor estimates are expressed in units 'g/km'.

Usage

ef_usa_moves(
  pollutant,
  model_year,
  reference_year = 2020,
  speed,
  fuel = "D",
  as_list = TRUE
)

Value

List. Emission factors in units 'g/km' by speed and model_year.

Arguments

pollutant: character. Pollutants: "CH4" (Methane), "CO" (Carbon Monoxide), "CO2" (Carbon Dioxide), "EC" (Energy Consumption), "HONO" (Nitrous Acid), "N2O" (Nitrous Oxide), "NH3" (Ammonia ), "NH4" (Ammonium), "NO" (Nitrogen Oxide), "NO2" (Nitrogen Dioxide), "NO3" (Nitrate), "NOx" (Oxides of Nitrogen), "PM10" (Primary Exhaust PM10 - Total), "PM25" (Primary Exhaust PM2.5 - Total), "SO2" (Sulfur Dioxide), "THC" (Total Gaseous Hydrocarbons ), "TOG" (Total Organic Gases) and "VOC" (Volatile Organic Compounds)
model_year: numeric. Model year of vehicle.
reference_year: numeric. Year of reference, in which the emissions inventory is estimated. Default is 2020. Values between 2015 - 2022.
speed: units. Speed in 'km/h'. Emission factor are returned in speed intervals: "0-2.5", "2.5-7.5", "7.5-12.5", "12.5-17.5", "17.5-22.5", "22.5-27.5", "27.5-32.5", "32.5-37.5", "37.5-42.5", "42.5-47.5", "47.5-52.5", "52.5-57.5", "57.5-62.5", "62.5-67.5", "67.5-72.5", ">72.5" mph (miles/h).
fuel: character. Type of fuel: 'D' (Diesel),'G' (Gasoline), 'CNG' (Compressed Natural Gas). Default is 'D'.
as_list: logical. If TRUE (default), the function returns the output in a list format. If FALSE, the output is returned in a data.table format.

Details

Users can view the pre-processed database in data(ef_usa_moves_db) function.

Examples

Run this code

df <- ef_usa_moves(
         pollutant = c("CO","PM10"),
         model_year = 2015,
         speed = units::set_units(10:100,"km/h"),
         reference_year = 2016,
         fuel = "D",
         as_list = TRUE
        )