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CCXG Workshop, February 2021, Elsa Hatanaka
1. 0
CCXG online workshop
Understanding opportunities and challenges of the CRF
system: Capacity-building to support CRT discussions
Session on โSharing Experience: Challenges and solutions
in using CRFs and the CRF Reporter (Part I)โ
February 2, 2021 13:30-15:00 (CET), via Zoom
Elsa Hatanaka
Greenhouse Gas Inventory Office of Japan (GIO)
National Institute for Environmental Studies (NIES)
Sharing Japanโs Experience in
Compiling and Reporting
the National GHG Inventory
2. Data Providers
Institutional Arrangements
Private Consultant
companies
Relevant Organizations such
as Industrial Associations
Ministry of Economy, Trade
and Industry
Ministry of Land, Infrastructure,
Transport and Tourism
Ministry of Agriculture,
Forestry and Fisheries
Ministry of the Environment,
Other Relevant Divisions
Ministry of Finance
Relevant
Ministries/Agencies
Data
provision
Request
for Data
Data
provision
Request for
QC check of
NIR & CRF
Request for
revision of
NIR & CRF
(QC)
Examination and Approval
of Revision proposal
Request for QC
check of
NIR & CRF
Request for
revision of
NIR & CRF (QC)
Ministry of Internal Affairs and
Communications
Ministry of the
Environment
Global Environment Bureau,
Decarbonized Society
Promotion Office
single national entity
responsible for GHG
inventory preparation
Greenhouse
Gas Inventory
Office of Japan
organization for actual
work of GHG Inventory
Ministry of Health, Labour
and Welfare
Committee for
GHG Emissions
Estimation Methods
Request for
GHG inventory
preparation
Submission of the draft
GHG inventory
Request for revisions of
Estimation methods
1
Submission of the
GHG Inventory
3. We think of the following:
โข With the methodology we want to use, how will the
CRF look like? How will it be filled out?
โข Do we have the necessary AD, emission, and other
information for the whole time-series?
โข Can it be reported year after year?
>>> Internal ORGANIZATION of the data becomes KEY
2
When faced with a new sourceโฆ
4. โข Microsoft Excel is used (offline)
โข Each calculation file is named by sector/category and
level of work it contains
โ Level 1: Files for data input
โ Level 2: Files for calculation of emission factors and activity data
โ Level 3: Files for calculation of emissions
โ Level 4: Files for summary of emissions/QC check, and transferring data to the CRF
Reporter
โ Level 5: Files for output to NIR tables and graphs
For example: The file with the title of โ1B-L3-2020โ is the calculation file of the
emissions from the 1B category (fugitive emissions from fuels) prepared for the 2020
submission
โข Each calculation file covers the whole time-series,
enabling the compiler to see the trend, and also align
data with the CRF entry format 3
Calculation files: Japanโs case (1)
5. โข Calculation is automatically carried through from Level
1 to Level 5, by links
โ emissions are calculated in the L3 files, and then summarized in the L4 file and
utilized in the L5 files
โข Each year, the calculation files are updated to reflect:
โ a new inventory year and any change in methodology (by changing e.g. links,
calculation formula)
โ most recent year data are added, and older data are modified (if needed)
โข The calculation files generally look similar across all
sectors with:
โ the whole time-series displayed in a similar manner
โ cells shaded in a similar manner
โ font colored in a similar manner
4
Calculation files: Japanโs case (2)
Helps to intuitively
avoid mistakes
6. Structure of the Excel File System
5
Level 5
Level 4
Level 3
Level 2
Level 1
(Level 0)
Files for calculation of AD
Files for calculation of EFs
Data 8
Data 7
Data 6
Data 5
Data 4
Data 3
Activity Data 2
Activity Data 1
Emission Factor 2
Emission Factor 1
Data 2
Emission 1
Data 1
Files for calculation of Emissions
Files for data input
File for summary of emissions
Files for NIR tables and graphs
Emission 2
Summarizing
Compile
Compile
Calculation
Process
Files for transferring
data to CRF Reporter
CRF
QC Check
NIR
Press releases
For details please see NIR Annex 6
7. 6
CRF Reporter
(online)
CRF Tables
Data
transfer files
(โemptyโ)
Data
transfer files
(filled)
1. export
Excel files
4. import
Previous Data
transfer files
(linked to
calculation files)
2. copy the
links
(offline)
File for Summary
of Emissions
6. QC Check
by National Inventory
Compiler and sectoral
exports
5. generate
CRF tables
3. paste + modify links
(offline)
Transferring data to the CRF Reporter
a lot of
work
initially
8. โข It is important to establish an inventory calculation
system that is easy to use for newcomers, clear, and
therefore stable
โข A good calculation system is adaptable to 1) country-
specific methodology modification, 2) changes in
reporting formats/software in the future
>>> Although setting up the system and changing it in the
future will require a lot of work, IT ISNโT DIFFICULT
7
For the use of the CRFs and Reporterโฆ
9. โข CHALLENGE:
โ Both Emissions and Activity Data are confidential
โ Activity Data are confidential
โ A second source needs to be made confidential in order to mask another sourceโs
confidential information, but the emissions still need to be reported somehow
โข SOLUTION:
โ Use of the notation key C, where confidential
โ Direct entry of total Emission values (when above a notation key C entry in sub-
level)
8
Example of a challenge and solution
GREENHOUSE GAS SOURCE AND ACTIVITY DATA IMPLIED EMISSION FACTORS EMISSIONS
SINK CATEGORIES
Production/Consumption quantity CO2
CO2
Emissions
Description (kt) (t/t) (kt)
B. Chemical industry 100
1. AAA production Production of AAA C C C
2. BBB production Production of BBB 200 0.15 30
3. CCC production Production of CCC C C 10
4. DDD production Production of DDD C C C
Some other challenges can be resolved by gradually
working on them (e.g. starting with IEs and unpacking
them later, or starting with NEs and fixing them later)
OR improving the Reporterโs functionalities
10. 9
Thank you for your attention
https://www.nies.go.jp/gio/en/index.html
www-gio@nies.go.jp
The 17th Workshop on GHG
Inventories in Asia (2019)
Mutual Learning (2020)