The Norwegian emissions
inventory
Methodologies for SLCFs inventory

Julien Jabot, Norwegian Environment Agency
11.04.2022

Inventory in Norway• Cooperation between Statistics Norway, the Norwegian
Environment Agency and Norwegian Institute of Bioeconomy
Research (LULUCF).
• National emission inventory developed first in the 90s.
• Norway reports emissions to UNFCCC, UNECE/LRTAP, Arctic
council and EU.

Which SLCFs are estimated and reported?
UNFCCC
reporting

CH4

NMVOC,
NOx, CO,SO2 andNH3

UNECE/ LRTAP
reportingPM2.5, Black
Carbon (BC)Organic
Carbon (OC)Nationalstatistics

Inventory, a long-term improvment process
T1 methodologies,default AD, default EF

Advanced models, T2/T3
methodologies, reported datafrom plants, CS or PS EF
2022

90s

Key categories have been prioritized and new methodologies
have been developed based on:• Guidebooks and guidelines, international models• Reporting from industries, including reporting under EU-ETS• Scandinavian projects (peer to peer review, practices
exchange, emissions measurements, etc.)• Emission measurements to develop specific EF or models

Methane• CH4 emissions are estimated with the use of the IPCC guidelines(1996, 2006, 2019)

ENERGY

IPPU

Agriculture

Waste

AD: Energybalance

AD: Reported
activity data fromthe plants

AD: Statistics andsurveys

AD: Statistics andreported activity
data

EF: CS, D

EF: PS, D

EF: CS, D

EF: CS, D

D: default, CS: Country Specific, PS: Plant SpecificBC and other SLCFs• Emissions from PM2.5, NOx, CO, NMVOC, SO2 and NH3 are
estimated based on the EMEP guidebooks (CORINAIR, …, 2019)

ENERGY

IPPU

Agriculture

Waste

AD: Energybalance

AD: Reported
activity data fromthe plants

AD: Statistics andsurveys

AD: Statistics andreported activity
data

EF: CS, D

EF: CS, PS, D

EF: CS, D

EF: CS, D

D: default, CS: Country Specific, PS: Plant SpecificMethodological issues• Data Collection:• Energy balance• Norwegian authorities give emission permits to industrial plants (air),wastewater treatment plants (water) which have to report emissions andactivity data.
• Annual surveys sent to farmers: activity data and practices (Norwegian
Agriculture Agency)• Time series consistency• Emissions are recalculated for the whole time series for any changes

Methodological issues – QA/QC• Specific procedures within and between the different institutions
involved in the inventory production:• Checks of emission factors and activity data and their documentation• Check of reported activity and emission data
• Check of emission estimations• Review process• Peer to peer
• UNFCCC, EU• LRTAPBC / OC
• Mainly based on estimated fractions of PM 2.5 inventory• BC/OC inventory has been developed in 2013, based on the work
done by IIASA• Norway used specific EF for:• wood burning• Flaring• Some EF have been revised with the EMEP/EEA guidebook (fromthe 2013 version)References• IIASA: Kupiainen, K. and Z. Klimont (2004). Primary Emissions of Submicron andCarbonaceous Particles in Europe and the Potential for their Control., International,(IIASA). and• Kupiainen, K. and Z. Klimont (2007). "Primary emissions of fine carbonaceous particles
in Europe." Atmospheric Environment 41(10): 2156-2170• Wood Burning: Seljeskog, M., F. Goile, et al. (2013). Particle emission factors forwoodstove firing in Norway. Trondheim, SINTEF Energi AS• Flairing: McEwen, J. D. N. and M. R. Johnson (2012). "Black Carbon Particulate Matter
Emission Factors for Buoyancy Driven Associated Gas Flares." Journal of the Air & Waste
Management Association 62(3): 307-321.

References• Statistics Norway: Aasestad, K. (2013): Emissions of black carbon and organic carbon in
Norway 1990-2011 Statistics Norway• The Norwegian National Inventory Report• The Norwegian Informative Inventory Report