emis_paved: Estimation of resuspension emissions from paved roads

In vein: Vehicular Emissions Inventories

Estimation of resuspension emissions from paved roads

Description

emis_paved estimates vehicular emissions from paved roads. The vehicular emissions are estimated as the product of the vehicles on a road, length of the road, emission factor from AP42 13.2.1 Paved roads. It is assumed dry hours and annual aggregation should consider moisture factor. It depends on Average Daily Traffic (ADT)

Usage

emis_paved(
  veh,
  adt,
  lkm,
  k = 0.62,
  sL1 = 0.6,
  sL2 = 0.2,
  sL3 = 0.06,
  sL4 = 0.03,
  W,
  net = net
)

Arguments

veh	Numeric vector with length of elements equals to number of streets It is an array with dimenssions number of streets x hours of day x days of week
adt	Numeric vector of with Average Daily Traffic (ADT)
lkm	Length of each link
k	K_PM30 = 3.23 (g/vkm), K_PM15 = 0.77 (g/vkm), K_PM10 = 0.62 (g/vkm) and K_PM2.5 = 0.15 (g/vkm).
sL1	Silt loading (g/m2) for roads with ADT <= 500
sL2	Silt loading (g/m2) for roads with ADT > 500 and <= 5000
sL3	Silt loading (g/m2) for roads with ADT > 5000 and <= 1000
sL4	Silt loading (g/m2) for roads with ADT > 10000
W	array of dimensions of veh. It consists in the hourly averaged weight of traffic fleet in each road
net	SpatialLinesDataFrame or Spatial Feature of "LINESTRING"

Value

emission estimation g/h

Note

silt values can vary a lot. For comparison:

ADT	US-EPA g/m2	CENMA (Chile) g/m2
< 500	0.6	2.4
500-5000	0.2	0.7
5000-1000	0.06	0.6
>10000	0.03	0.3

References

EPA, 2016. Emission factor documentation for AP-42. Section 13.2.1, Paved Roads. https://www3.epa.gov/ttn/chief/ap42/ch13/final/c13s0201.pdf

CENMA Chile: Actualizacion de inventario de emisiones de contaminntes atmosfericos RM 2020 Universidad de Chile#'

Examples

## Not run: 
# Do not run
veh <- matrix(1000, nrow = 10,ncol = 10)
W <- veh*1.5
lkm <-  1:10
ADT <-1000:1010
emi  <- emis_paved(veh = veh, adt = ADT, lkm = lkm, k = 0.65, W = W)
class(emi)
head(emi)

## End(Not run)

vein documentation built on May 29, 2024, 7:20 a.m.