Guidance on work in Break-out Groups (BOGs)
Energy, IPPU, AFOLU and Waste
Joint 1st and 2nd IPCC Expert Meetingon Short-Lived Climate Forcers (SLCFs)

Virtual (online) meeting, 11-22 October 2021
Pavel Shermanau
IPCC TFI TSUIntroduction
IPCC TFI TSU has prepared the following documents for themeeting for each BOG (Energy, IPPU, AFOLU and Waste):
Table 1 Summary Information
Table 2 List of Categories
Issue paper
Compilation Table (synthesis of information collected by TSU and all feedbacksfrom participants) in MS Excel• Guidance to experts••••

Table 1 (Summary Information) contains category list and SLCF species
with pre-filled information on methodological issues and comments, andempty cells on global applicability and gaps (to be filled in by experts)
Table 2 (Category List) is based on Table 1 and excerpts only thecategory list with SLCF species and comments
 These Tables are intended to be used as an input to the Scoping Meeting for a
new Methodology Report on SLCFs to produce its draft outline

IPCCcodeACategorySLCFBC

2B Chemical Industry
2B1
Ammonia production

NOx, NH3,CO,NMVOC,
SOx

Table 1 Summary Information
IPCCMethod
D

Alternativemethodology
E

Available EFs/Parameters

FYes, withmodification,
the method isslightly different:
fuel and carbon
content (IPCCCO2) per outputof ammonia vs.
EF of SLCF per
output ofammonia

EMEP/EEA, UNEP,
US AP-42, REAS,
MEP China

Globallyapplicable?
GYes

Gaps
(if any)
HComments
I

D: In the 2006 IPCC Guidelines, in the case of ammonia production nodistinction is made between fuel and feedstock emissions with allemissions accounted for in the IPPU Sector.
The method for CO2 and SLCFs is slightly different: input of fuel and its
carbon content (IPCC-CO2) by output of ammonia vs. EF of SLCF byoutput of ammonia (SLCF).
F: EMEP/EEA – NOx, CO, NH3. NMVOC - Tier2, Tier 2 - technology
specific
UNEP – NOx, CO, NH3, SOx, NMVOCUS AP-42 – NH3, SO2, CO, NMVOCREAS – NH3
MEP China – NMVOC

2B2

Nitric Acid production

NOx, NH3

Yes

EMEP/EEA, UNEP,
US AP-42

Yes

2B3

Adipic Acid production

NOx, CO,NMVOCYes

EMEP/EEA, UNEP,
US AP-42

Yes

F: EMEP/EEA – NOx.
UNEP – NOx and NH3
US AP-42 – NOx
F: EMEP/EEA – NOx, COUNEP and US AP-42 – NOx, CO, NMVOCTable 2 Category List
IPCCcodeA

Category

SLCF

CommentsBCINOx, NH3,CO, NMVOC,SOx

In the 2006 IPCC Guidelines, in the case of ammonia production no distinction is made between fuel and feedstock emissions with all emissions
accounted for in the IPPU Sector.
The method for CO2 and SLCFs is slightly different: input of fuel and its carbon content (IPCC-CO2) by output of ammonia vs. EF of SLCF byoutput of ammonia (SLCF).

2B Chemical Industry
2B1Ammonia production

2B2

Nitric Acid production

NOx, NH3

2B3

Adipic Acid production

NOx, CO,NMVOCEMEP/EEA – NOx, CO, NH3. NMVOC - Tier2, Tier 2 - technology specific
UNEP – NOx, CO, NH3, SOx, NMVOCUS AP-42 – NH3, SO2, CO, NMVOCREAS – NH3
MEP China – NMVOCEMEP/EEA – NOx.
UNEP – NOx and NH3
US AP-42 – NOx
EMEP/EEA – NOx, CO
UNEP and US AP-42 – NOx, CO, NMVOCCompilation
Table 1 (Summary Information) is based on information compiled from:o Three methodological frameworks• EMEP/EEA. Air Pollutant Emission Inventory Guidebook 2019https://www.eea.europa.eu/publications/emep-eea-guidebook-2019• UNEP. Atmospheric Brown Clouds: Emission Inventory Manualhttps://www.unep.org/resources/report/atmospheric-brown-clouds-emissioninventory-manual• US EPA. AP-42: Compilation of Air Emissions Factors
https://www.epa.gov/air-emissions-factors-and-quantification/ap-42compilation-air-emissions-factors

o Experts’ feedbacks received after the kick-off meeting
Experts’ feedbacks

EnergyIPPU

AFOLU

Waste17121311

Tables
The idea of the tables is to facilitate discussion and to achieve
the following goals of the meeting:• to compile a complete list of SLCF source categories andassociated SLCF species (the main goal)• to compile a list of knowledge gaps (methods, activity data,emission factors and parameters, etc.) (the secondary goal)

BOGs work – Table 1 and Issue paper
Participants in each BOG are requested to consider Table 1(Summary Information) together with the sectoral Issue Paper,and to go through the sectoral category list with intention toidentify the following:• Completeness(participants are welcomed to add or to delete any source category and/or SLCFspecies)• Global applicability of methods provided for the SLCF sourcecategories• Significance of source categories, where no methods areavailable (as per expert judgment)• Any knowledge gaps

BOGs work – Table 1 and Issue Papero Global applicability

Is the method applicable to every country in the world so far as can be judged?
The answer should be based on the availability of activity data as national/regional/globaldatasetso GapsAny gaps in methods, activity data, emission factors, etc.

Column G
Column G(for non-IPCCmethods) andColumn H havenot been precompiled by TSU(in blue)BOGs work – Table 2 and Reporto Based on Table 1 and Issue paper, the Table 2 (Category List) should beproducedo Also, each BOG should produce a report, which describes the most importantsectoral issues, including issues with different views, possible cross-sectoralissues and a list of knowledge gaps
o All sectoral issues will be useful as input for the third expert meeting and theScoping meeting. Based on BOGs’ reports, the Meeting report will be produced

BOGs work - Table 2
IPCC Guidelines provide methods that can be applied under any nationalcircumstances.
Accordingly, categories and associated SLCF species to focus on are thefollowing:o SLCF categories that can be estimated by applying a default IPCC method (Tier 1)•Since IPCC methods are designed to be used world-wide, all source categories, for which SLCF
emissions can be estimated by applying an IPCC method (or a modified IPCC method), have been
included in the list of source categories – Table 2

o SLCF categories that cannot be estimated by applying a default IPCC method.
However, alternative methodological sources (e.g., EMEP/EEA) provide a method•

These sources are included in Table 2 by providing comments (Column I) either to confirm theglobal applicability or to clarify gaps (data/information) that prevent its global applicationo Other significant SLCF sources for which methods are not currently available•

These sources are expected to be included in Table 2, only if judged to be significant. A note on
data/information gaps that prevent to establish a methodology should be provided

Table 2 - List of Categories

Is a default IPCC
methodapplicable?
Yes(or Yes withmodification)(e.g. NitricAcid,AD x EF)

To be excluded from the List ofcategories – Table 2 (to record
it in the BOG report)
NoIPCC method is notapplicable(or No IPCC method)(e.g. Sulphuric Acid)

Is an alternative
method available?
(e.g. EMEP, US NEI)To be included in the Listof categories andassociated SLCFs - Table 2NoNoIs it asignificantsource?

Gap(s) to be filled:
Yes- to develop a newmethod

Yes(e.g. SulphuricAcid, EMEP)Is an alternative
method globallyapplicable?

No- to modify thealternative method tobe globally applicableYes(e.g. Sulphuric Acid,AD x EF)

To be included in the List of categories andassociated SLCFs - Table 2

Gaps to be noted in Table 2

Logistics
o 4 sessions for each BOG with different timing• see Agendao Final Closing Plenary• each BOG will have 30 min for the BOG Reporto All documents are on Electronic Discussion Group (EDG)
https://www.ipcc-nggip.iges.or.jp/forumtree/login/• username: SLCF_IPCC• password: slcf_meetingso For sharing or uploading materials, please send it to IPCC TFI TSU• email: nggip-meetings@iges.or.jp

o Zoom links for the BOGs sessions and Plenaries•

see Invitation lettero Zoom sessions including chats are recorded and stored in the EDG

MS Teams for Work and Communication
IPCC SLCF Teamwas created

The sectoral docs areposted in Files

Posts for Communication

MS Teams (https://teams.microsoft.com/)
MS Word file can beedited online

Please, use a trackchange modeAny Questions?
https://www.ipcc-nggip.iges.or.jp/index.html