Air emissions accounts by NACE Rev. 2 activity (env_ac_ainah_r2)

National Reference Metadata in Single Integrated Metadata Structure (SIMS)

Compiling agency: Statistics Finland


Eurostat metadata
Reference metadata
1. Contact
2. Metadata update
3. Statistical presentation
4. Unit of measure
5. Reference Period
6. Institutional Mandate
7. Confidentiality
8. Release policy
9. Frequency of dissemination
10. Accessibility and clarity
11. Quality management
12. Relevance
13. Accuracy
14. Timeliness and punctuality
15. Coherence and comparability
16. Cost and Burden
17. Data revision
18. Statistical processing
19. Comment
Related Metadata
Annexes (including footnotes)
 



For any question on data and metadata, please contact: Eurostat user support

Download


1. Contact Top
1.1. Contact organisation

Statistics Finland

1.2. Contact organisation unit

Economic and Environmental Statistics

1.5. Contact mail address


2. Metadata update Top
2.1. Metadata last certified 29/09/2021
2.2. Metadata last posted 16/01/2024
2.3. Metadata last update 16/01/2024


3. Statistical presentation Top
3.1. Data description

Air emissions accounts (AEA) record flows of gaseous and particulate materials emitted into the atmosphere as a result of economic activity.

AEA are a subset of environmental-economic accounts. They offer a detailed breakdown for 64 emitting economic activities (NACE), plus households, as defined in the national accounts of EU countries. They are aligned with economic statistics and GDP. These features make them suitable for integrated environmental-economic analyses and modelling – for example of 'carbon footprints' and climate-change modelling scenarios.

National Statistical Institutes (NSI) submit AEA to Eurostat through a mandatory annual data collection. The data collection includes an electronic questionnaire and this quality report.

 

3.2. Classification system

The AEA dataset has the following dimensions:

1)           Air pollutant: Emissions to air of the following gaseous and particulate substances are collected (greenhouse gases, air pollutants):

Carbon dioxide without emissions from biomass (CO2),

Carbon dioxide from biomass (Biomass CO2)*,

Nitrous oxide (N2O), Methane (CH4),

Perfluorocarbons (PFCs),

Hydrofluorocarbons (HFCs),

Sulphur hexafluoride (SF6) including nitrogen trifluoride (NF3),

Nitrogen oxides (NOx),

Non-methane volatile organic compounds, (NMVOC),

Carbon monoxide (CO),

Particulate matter < 10μm (PM10),

Particulate matter < 2,5μm (PM2,5),

Sulphur dioxide (SO2),

Ammonia (NH3)

2)           Geopolitical entity: EU Member States, EFTA Countries, Candidate Countries etc.

3)           Economic activities: include 64 production activities (classified by NACE rev.2 A*64), and households’ consumption (3 sub-classes).

4)           Time: reference year for which air emissions are reported

5)           Unit: tonnes and thousand tonnes

3.3. Coverage - sector

The data refer to national economies as defined in the system of national accounts. Greenhouse gases and air pollutants emitted by resident units representing the national economy are covered.

3.4. Statistical concepts and definitions

Conceptually AEA belong to the international system of environmental economic accounting (SEEA-Central Framework). Furthermore, AEA is one of several physical modules of Eurostat's programme on European environmental economic accounts. It is covered by Regulation (EU) No.691/2011 on European environmental economic accounts.

AEA are closely related to concepts and definitions of national accounts. Most notably, they follow the residence principle, i.e. they record emissions related to resident unit's activities, regardless where those occur geographically.

Further methodological guidelines are provided in various publications by Eurostat (see Eurostat website > Environment > Methodology, heading: 'Air emissions accounts').

3.5. Statistical unit

Data refer to emissions by resident economic units in the sense of SEEA CF 2012 and National Accounts (ESA), including households.

3.6. Statistical population

The national economy is as defined in SEEA CF 2012 and National Accounts (ESA), i.e. all economic activities undertaken by resident units.

3.7. Reference area

The reference area is the economic territory as defined in SEEA CF 2012 and National Accounts (ESA). A unit is said to be a resident unit of a country when it has a centre of economic interest in the economic territory of that country, that is, when it engages for an extended period (1 year or more) in economic activities in that territory.

By following this residence principle, the Air Emission Accounts record emissions from resident units' activities, regardless where they occur. This is the main conceptual difference to emission inventories for greenhouse gases (UNFCCC) and air pollutants (CLRTAP).

3.8. Coverage - Time

Years from 2008 onwards.

3.9. Base period

Not applicable because AEA are not reported as indices.


4. Unit of measure Top

The unit of measure is tonnes or thousand tonnes.

F-gases (HFC, PFC, SF6 and NF3) are reported in tonnes of CO2 equivalents.

SOX are reported in tonnes of SO2 equivalents, and NOX are reported in tonnes of NO2 equivalents.


5. Reference Period Top

The data refer to calendar years.


6. Institutional Mandate Top
6.1. Institutional Mandate - legal acts and other agreements

Air emissions accounts (AEA) are legally covered by Regulation (EU) 691/2011on European Environmental Economic Accounts.

6.2. Institutional Mandate - data sharing

Not applicable at national level.


7. Confidentiality Top
7.1. Confidentiality - policy

All data collected for statistical purposes are confidential. When processing data, it is seen to that no person's privacy or business or professional secret is endangered. Statistics and research results are released as summaries, tables and graphs. The answers of individual persons or enterprises cannot be identified from them. This is regulated by the Statistics Act (http://www.tilastokeskus.fi/meta/lait/2013_tilastolaki_en.pdf).

7.2. Confidentiality - data treatment

The data is aggregated to a level where individual person or enterprises can't be identified.


8. Release policy Top
8.1. Release calendar

Data was nationally published 29.09.2023 at https://stat.fi/en/statistics/tilma

8.2. Release calendar access

https://stat.fi/en/statistics/tilma

8.3. Release policy - user access

Data is nationally published at https://stat.fi/en/statistics/tilma


9. Frequency of dissemination Top

Data are disseminated annually.


10. Accessibility and clarity Top
10.1. Dissemination format - News release

Not available.

10.2. Dissemination format - Publications

https://stat.fi/en/statistics/tilma

10.3. Dissemination format - online database

https://stat.fi/en/statistics/tilma

10.3.1. Data tables - consultations

Not available.

10.4. Dissemination format - microdata access

Not available.

10.5. Dissemination format - other

Not available.

10.5.1. Metadata - consultations

Not available.

10.6. Documentation on methodology

Not available.

10.6.1. Metadata completeness - rate

Not applicable.

10.7. Quality management - documentation

https://www.stat.fi/en/statistics/documentation/tilma


11. Quality management Top
11.1. Quality assurance

Data is compared to the GHG inventory UNFCCC and CLRTAP reports, as well as to the National accounts data for the relevant parts.

11.2. Quality management - assessment

Data is in line with the GHG inventory UNFCCC and CLRTAP reports, as well as with the National accounts data for the relevant parts.


12. Relevance Top
12.1. Relevance - User Needs

Not available.

12.2. Relevance - User Satisfaction

Not available.

12.3. Completeness

All relevant data is available

12.3.1. Data completeness - rate

Not applicable; To ensure comparability, this will be calculated and provided by EUROSTAT in the European quality report using a standardised method.


13. Accuracy Top
13.1. Accuracy - overall

See Annex 1.



Annexes:
Annex 1 complete
13.2. Sampling error

Not applicable because data are not based on a sample survey.

13.2.1. Sampling error - indicators

Not applicable because data are not based on a sample survey.

13.3. Non-sampling error

Not applicable.

13.3.1. Coverage error

Not applicable.

13.3.1.1. Over-coverage - rate

Not applicable.

13.3.1.2. Common units - proportion

Not applicable.

13.3.2. Measurement error

Not applicable.

13.3.3. Non response error

Not applicable.

13.3.3.1. Unit non-response - rate

Not applicable.

13.3.3.2. Item non-response - rate

Not applicable.

13.3.4. Processing error

Not applicable.

13.3.5. Model assumption error

 Not applicable.


14. Timeliness and punctuality Top
14.1. Timeliness

Data is release T+21 months after end of reference year.

14.1.1. Time lag - first result

Not applicable.

14.1.2. Time lag - final result

Not applicable.

14.2. Punctuality

Data is release T+21 months after end of reference year.

14.2.1. Punctuality - delivery and publication

Not applicable.


15. Coherence and comparability Top
15.1. Comparability - geographical

AEA are compiled according to harmonised guidelines provided by Eurostat and hence comparable across European countries reporting AEA to Eurostat.

15.1.1. Asymmetry for mirror flow statistics - coefficient

Not applicable.

15.2. Comparability - over time

There are no breaks in time series.



Annexes:
Annex 2
15.2.1. Length of comparable time series

Not applicable; To ensure comparability, this will be calculated and provided by EUROSTAT in the European quality report using a standardised method.

15.3. Coherence - cross domain

Data is consistent with the GHG inventory UNFCCC and CLRTAP reports, as well as with the National accounts data for the relevant parts.

15.3.1. Coherence - sub annual and annual statistics

Not applicable, because AEA data are annual.

15.3.2. Coherence - National Accounts

The data is consistent with National Accounts.

15.4. Coherence - internal

The data is internally consistent.


16. Cost and Burden Top

0,5 full time equivalents


17. Data revision Top
17.1. Data revision - policy

The data is revised yearly when new data set is produced. The revisions follow the revisions of source data (such as GHG inventory or CLRTAP inventory and National accounts SUT). The revisions are usually more common for the most recent years. Occasionally the revisions are caused by changes/improvements to the methodology of the compilation in which case the whole time series is updated.

17.2. Data revision - practice

The revisions follow the revisions of source data (such as GHG inventory or CLRTAP inventory and National accounts SUT). Revisions to most recent years in National accounts SUT usually leads to revisions in allocation of road transport fuel use and allocation of commercial and public service sector building heating emissions.

 

Allocation of F-gases to industries has been revised for years 2015 and onwards. Previously same allocation key was used to allocate total f-gas emissions to industries. Now a specific key from new microdata is calculated for each year, starting from year 2015.

17.2.1. Data revision - average size

Not applicable; To ensure comparability, this will be calculated and provided by EUROSTAT in the European quality report using a standardised method.


18. Statistical processing Top
18.1. Source data

The main data sources used are the GHG inventory reported to UNFCCC and the CLRTAP inventory. For more detailed data, EU ETS and national environment permit registery are used. To allocate road transport emissions and commercial/public service sector space heating emissions, National accounts supply and use tables are used. For calculating bridging items, Customs data, transport statistics and tourism statistics are used.

18.2. Frequency of data collection

Data is collected annually.

18.3. Data collection

Data used is received from other statistics and other statistical institutions. No specific data collection or surveys are done for AEA.

18.4. Data validation

The data is checked for significant revisions or yearly changes. Notable changes are traced back to source data and the plausibility is checked. Final data is compared to GHG and CLRTAP inventories and the consistency is checked.

18.5. Data compilation

Inventory first approach is used for compilation,

18.5.1. Imputation - rate

Not applicable.

18.5.2. Method used to allocate emissions to economic activities

The main data sources used are the GHG inventory reported to UNFCCC and the CLRTAP inventory. For more detailed data, EU ETS and national environment permit registery are used. To allocate road transport emissions and commercial/public service sector space heating emissions, National accounts supply and use tables are used.

18.5.3. Method used to determine and distribute road transport emissions

Road transport emissions are allocated with National accounts monetary supply and use tables. Monetary data from fuel use (gasoline and diesel) is used to derive allocation keys for fuels. Allocation keys are used to allocate the total emissions from emission inventories.

18.5.4. Adjustments for residence principle

Air transport & Water transport:

National residents abroad:

Fuels bunkered to national crafts abroad: Data on fuels bunkered to national crafts abroad is obtained from International trade in goods and services statistics. An entry called "Goods procured in ports by carriers" is estimated to contain the monetary value of fuels bunkered to resident ships abroad. This value is further converted to physical units with price information, and then further to emissions with an emission factor. The ratios between different fuels is estimated to be the same is in the fuels bunkered in finnish territory.

Fuels bunkered to national crafts in the territory (heading to international transport): This is calculated with data regarding bunkering from emission inventories and energy statistics, and Customs data. Fuels bunkered to non-national craft in the territory is estimated from the Customs data CN code 99302700, which is the monetary value of fuels exported (bunkered) to foreign crafts. This value is further converted to physical units with price information, and is then substracted from the total of fuels bunkered in the territory. The rest of bunkered fuels are allocated to residents units, and is then further converted to emissions via emission factors.

Non-residents on the territory:

These emission are estimated to be zero.

Exactly the same calculation methodology is applied to both air and water transport emissions.

 

Land transport:

By nace H49:

Residents abroad: Road transport statistics and Public transport statistics are used to estimate the mileage of international freight and bus transport. Emissions from the mileage is calculated with the average emission from similar national transport. As these statistics cover transport in the EU, expert estimations are used for transport to and from Russia.

Non-residents on the territory: Same data set is used as for the residents abroad.

By Households:

Residents abroad: Travel statistics are used to estimate the mileage of households abroad, based on the quantity, lenght and destination of the leisure trips with private cars. Emissions are calculated from the average emission per kilometre.

Non-residents on the territory: Private cars operated by non-resident households in the territory are calculated from expert estimations.

 

18.6. Adjustment

Not applicable.

18.6.1. Seasonal adjustment

Not applicable.


19. Comment Top


Related metadata Top


Annexes Top