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4.3.7. CO2 Emissions

CO2 emission parameters and profiles.

Parameters:

co2pointsource

CO2 point source emission factor

Unit:

kg m^-2 s^-1

Default:

None (optional)

ef_umolco2perj

CO2 emission factor per unit of fuel energy

Unit:

umol J^-1

Default:

None (optional)

Default Description:

Sample benchmark value: 1.159 umol J^-1 (Ward et al. 2016, central London); calibrate by site.

enef_v_jkm

Vehicle energy consumption factor

Unit:

J km^-1

Default:

None (optional)

Range Description:

Sample range from benchmark/sample tables: 3.97e6-4.11e6 J km^-1; calibrate by site.

fcef_v_kgkm

Fuel consumption efficiency for vehicles

Unit:

kg km^-1

Default Description:

Sample benchmark value: 0.285 kg km^-1 (Ward et al. 2016, central London); calibrate by site.

The fcef_v_kgkm parameter group is defined by the Daily Profile structure.

frfossilfuel_heat

Fraction of heating energy from fossil fuels

Unit:

dimensionless

Default:

None (optional)

Range Description:

Sample range from benchmark/sample tables: 0.05-0.7 (depends on local energy mix).

frfossilfuel_nonheat

Fraction of non-heating energy from fossil fuels

Unit:

dimensionless

Default:

None (optional)

Range Description:

Sample range from benchmark/sample tables: 0.0-0.7 (depends on local energy mix).

maxfcmetab

Maximum metabolic CO2 flux rate

Unit:

umol m^-2 s^-1

Default:

None (optional)

Default Description:

Sample value from benchmark/sample tables: 280.0 umol m^-2 s^-1; calibrate by site.

maxqfmetab

Maximum metabolic heat flux rate

Unit:

W m^-2

Default:

None (optional)

Default Description:

Sample value from benchmark/sample tables: 175.0 W m^-2; calibrate by site.

minfcmetab

Minimum metabolic CO2 flux rate

Unit:

umol m^-2 s^-1

Default:

None (optional)

Default Description:

Sample value from benchmark/sample tables: 120.0 umol m^-2 s^-1; calibrate by site.

minqfmetab

Minimum metabolic heat flux rate

Unit:

W m^-2

Default:

None (optional)

Default Description:

Sample value from benchmark/sample tables: 75.0 W m^-2; calibrate by site.

trafficrate

Traffic rate

Unit:

vehicle km ha^-1

The trafficrate parameter group is defined by the Daily Profile structure.

trafficunits

Units for traffic density normalisation

Unit:

vehicle km ha^-1

Default:

None (optional)

traffprof_24hr

24-hour profile of traffic rate

Unit:

dimensionless

The traffprof_24hr parameter group is defined by the Hourly Profile structure.

humactivity_24hr

24-hour profile of human activity

Unit:

dimensionless

The humactivity_24hr parameter group is defined by the Hourly Profile structure.

ref

The ref parameter group is defined by the Reference Info structure.