2019 Refinement to the 2006 IPCC Guidelines:
Refinements in Volume 1 (General Guidance andReporting)
Bonn Climate Change Conference (SB50)
SBSTA - IPCC Special Event on 2019 Refinement to the 2006 IPCC Guidelines
21 June 2019, Bonn, Germany
Yurii Pyrozhenko
IPCC TFI TSUOutline

GGR objectives
 To guide inventory compilers of Energy, IPPU, AFOLU and Waste
sectors on:
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National GHG Inventory arrangements and management tools
Data collection and adapting for inventory use
Uncertainty assessment
Methodological choice and identification of key categories
Ensuring a consistent time series
QA/QC and verification of emission estimates
Use and reporting of models
Calculation of emissions of precursors of GHGs and indirect emissions
Reporting of emissions and removals

 To provide reporting framework in standard tabular format:
 Tables facilitate consistency between countries, categories, gases and years
 They are not intended to prescribe specific reporting formats under the UNFCCC

Chapter 1 “Introduction to National GHG Inventories”
 New guidance on implementation of a national inventory management
system, including: Establishing arrangements to support the development, improvement andmaintenance of national GHG inventories
 Examples of institutional arrangements structuring, roles and capabilities of actors
and stakeholders, data flows and suggested contents of Data Supply Agreements
 Description of inventory management tools such as work plans, improvement
plans, data management systems and quality systems with the illustrative
examples Updated concept of “anthropogenic emissions and removals related to
new optional approach for disaggregation of emissions and removals byhuman and natural components in Chapter 2 of Volume 4
 Elaborated guidance on the treatment of CO₂, CH₄ and N₂O emissions
from combustion of biomass or biomass-based productsChapter 2 “Approaches to data collection”
 New guidance for the development of CS emission factors, including: Examples of main EF sensitive parameters Potential sources of EFs
 Update on standard measurement methods

 New guidance for data collection, including: Outline of data collection steps and decisions
 Treatment of confidential data with illustrative examples
 Update on potential data sources New guidance on the integration of emissions reported from facilities
into national GHG inventories, including: Designing facility-reporting programmes for inventory use (e.g. quality goals andreporting requirements for facility data)
 Facility-reported data integration options into national dataset with illustrativeexample
 Use of facility data not originally designed for inventory use

Chapter 3 “Uncertainties”
Updated guidance on uncertainty by providing more default
values, calculation examples and best practices, including: Structure of uncertainty assessment process AD uncertainty assessment based on complete and random samples(with examples) Clarification on key requirements for use of Approach 1 for combining
uncertainties
 Application of Approach 1 in practice Uncertainty assessment steps description
 Stepwise example demonstrating the use of Approach 2 uncertainty
assessment (Monte-Carlo analysis)

Excel-based addendum to Chapter 3: Tier 1 Uncertainty
calculation tool

Chapter 4 “Methodological Choice andIdentification of Key Categories” and Chapter 5“Time series consistency”
 Updated guidance on Key category analysis, including: Treatment of disaggregation of categories
 Treatment of particularly significant subcategories
 Simplification of equation on trend assessment (Approach 1)
 Introducing of key categories ranks

 Elaborated guidance on time series consistency, including: Information on how to ensure time series consistency when using
facility level data and different data sources
 Case studies of overlap, linear and non-linear interpolation method
 Examples of surrogate data by sector

Chapter 6 “QA/QC and Verification”
 Elaborated definitions of QA/QC and verification, including: Distinguishing of term “verification” defined in IPCC Guidelines from that used e.g.
in carbon markets

 Updated guidance on comparisons with atmospheric measurements,including: Advantages, limitations and prospects of using atmospheric measurements forverification of GHG emissions
 Key steps in applying inverse modelling for verification of national inventory (withcountry examples) Checklist to identify whether inverse model estimates are applicable for verification
 Outline of inventory comparison to global/regional inverse modelling products andsatellite observations

 New guidance on the use and reporting of models, including: Identification of model suitability Implementation and evaluation of model Checklist for ensuring good practice in use of models

Chapter 7 “Precursors and indirect emissions”
 Elaborated guidance on indirect CO₂ inputs to theatmosphere from emissions of carbon-containing compounds,including: Treatment of emissions of precursors and indirect CO₂ from fossil fuelcombustion, fugitives and biogenic sources in national inventories
 Options to address indirect CO₂ depending on metrics chosen (e.g.
GWP for fossil methane) Steps to estimate CO₂ inputs to atmosphere from NMVOC emissions
 Description of non-biogenic sources of indirect CO₂ from oxidation ofCH₄, CO and NMVOC Carbon content in NMVOC species from different source categories
 Carbon content in solvent portion of various materials (NMVOCemissions)Chapter 8 “Reporting Guidance and Tables”
 Updated to reflect refinements made in other Volumes(although it was not explicitly included in the original scope ofrefinements), including: Reporting guidance List of GHGs
 List of IPCC categories and their definitions
 Reporting Tables
 Chapter is not intended to prescribe reporting format to be used under
the UNFCCC (e.g. GWP, gases, structure of categories etc.)

Thank you
Link to the TFI web-site:
https://www.ipcc-nggip.iges.or.jp/
Link to the accepted 2019 Refinement (advance version):
https://www.ipcc-nggip.iges.or.jp/public/2019rf/index.html