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

National Reference Metadata in Single Integrated Metadata Structure (SIMS)

Compiling agency: Statistics sweden


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)
 



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1. Contact Top
1.1. Contact organisation

Statistics sweden

1.2. Contact organisation unit

Enviromental account

1.5. Contact mail address


Solna strandväg 86, 171 54 Solna


2. Metadata update Top
2.1. Metadata last certified 21/09/2023
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

Data is made available for 2008-2022.

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

No confidentiality on total emissions

7.1. Confidentiality - policy

Not applicable 

7.2. Confidentiality - data treatment

There is no micro data available in the dataset; however, some industry groups might be subject to confidentiality.


8. Release policy Top
8.1. Release calendar

Data was made available on the SCB website in March 2023: www.scb.se/mi1301-en

8.2. Release calendar access

The release calendar is readily available on the SCB homepage.

8.3. Release policy - user access

The release calendar is readily available on the SCB homepage.


9. Frequency of dissemination Top

Data are disseminated annually.


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

Following publication of the statistics in March, a news release is available here: https://www.scb.se/mi1301

10.2. Dissemination format - Publications

No separate report made.

10.3. Dissemination format - online database

Data was published in March on the SCB website: www.scb.se/mi1301-en

And in the statistical database: http://www.statistikdatabasen.scb.se/pxweb/en/ssd/START__MI__MI1301__MI1301B/MiljoUtslappAmneSNIb/?rxid=bf996512-3171-43ec-9c5f-49a5e1bbd628

10.3.1. Data tables - consultations

Not applicable 

10.4. Dissemination format - microdata access

Micro data is available for reserchers.

10.5. Dissemination format - other

Not applicable 

10.5.1. Metadata - consultations

Not applicable 

10.6. Documentation on methodology

Publication of the methodological descriptions can be found here: Kvalitetsdeklaration - Miljöräkenskaperna - UItsläpp tlll luft 2008–2021 (scb.se)

 

The document is only available in Swedish. 

10.6.1. Metadata completeness - rate

Not applicable

10.7. Quality management - documentation

Not applicable. 


11. Quality management Top
11.1. Quality assurance

Statistics Sweden applies the Eurostat code of practice and has implemented UNECE’s Generic Statistical Business Process Model (GSBPM) in the production processes.

11.2. Quality management - assessment

Overall, the data is of very good quality. Data is collected from reliable sources e.g. air emissions inventories and energy statistics, applying high standards with regard to the methodology and ensuring a high degree of comparability.


12. Relevance Top
12.1. Relevance - User Needs

The Swedish Environmental Protection Agency gave an assignment to the environmental accounts at Statistics Sweden in 2014 to deliver data and analyses in the area for climate impact of consumption . It has even given statistics Sweden the main responsibility for the research assignment called Policy Relevant Indicators for Consumption and Environment (PRINCE). PRINCE is a four year assignment that started in 2014 and is done in cooperation with the Royal Institute of Technology (KTH), the Stockholm Environment Institute, Chalmers University of Technology, the Norwegian University of Science and Technology and TNO/CML of the Netherlands http://www.prince-project.se/ .


The Swedish National board of Housing, Building And Planning are using the environmental accounts in their follow up of the environmental quality objectives related to their responsibilities (construction and real estate) They publish annual indicators: https://www.boverket.se/sv/byggande/hallbart-byggande-och-forvaltning/miljoindikatorer---aktuell-status/


Since December 2015, quarterly emissions to air by NACE and households is produced and published by the environmental accounts at Statistics Sweden. The quarterly statistics are also summarized to yearly preliminary statistics, published in the end of April or beginning of May. On commission by The Swedish Environmental Protection Agency also preliminary statistics for 2016 according to UNFCCC/CRF format was produced using the same data. Both quarterly statistics and preliminary yearly statistics have received a lot of attention in Swedish media. A report, also available in English, covering results and methodology for quarterly statistics is available at http://www.scb.se/en_/Finding-statistics/Publishing-calendar/Show-detailed-information/?publobjid=30988.


Regional air emissions accounts have also been developed and published since 2016 at www.scb.se/mi1301-en, with a variety of regional users from regional governments and media


Air emissions accounts are used by The National Institute of Economic Research (NIER) in their economic model EMEC.

12.2. Relevance - User Satisfaction

See 12.1

12.3. Completeness

The data covers the Swedish economy as a whole.

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

In order to ensure accuracy, the data collected and reported is checked against national inventories and energy statistics and are commonly revised every year. The overalll accuracy is good. 

 

(We have added nothing to Annex 1)



Annexes:
Annex 1
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

The data production of AEA is mainly done in the statistical software program SAS. Data checks to verify totals and trends are put in place to minimize the processing error. Yearly data is compared with the quarterly data also produced by the environmental accounts at Statistics Sweden. 

13.3.5. Model assumption error

The industry allocation is based on several models as well as the residence adjustment. 

Input data is mainly energy statistics, national accounts and transport statistics which are assumped to be the best available data sources for modelling of industry allocation and residence adjustment. 


14. Timeliness and punctuality Top
14.1. Timeliness

Sweden transmitted AEA data to Eurostat on 2023-09-29 2008-2022

There are preliminary figures available for 2022

14.1.1. Time lag - first result

Not applicable.

14.1.2. Time lag - final result

Not applicable.

14.2. Punctuality

The Regulation requires air emissions accounts to be provided by 30 September every year.

Sweden transmitted the data to Eurostat on 2023-09-30, covering the years 2008-2022.

Data was ready nationally 2023-05-11 (2008-2021) and 2023-05-11 (2022).

14.2.1. Punctuality - delivery and publication

The Regulation requires air emissions accounts to be provided by 30 September every year.

Sweden transmitted the data to Eurostat on 2023-09-30covering the years 2008-2022.

Data was ready nationally 2023-05-11 (2008-2021) and 2023-05-11 (2022).


15. Coherence and comparability Top

Good comapribility with energy statistics and inventory statistics (as reported to the UNFCCC). 

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 due to new methodologies or new indata. (we have added nothing to Annex 2)



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

Not applicable 

15.3.1. Coherence - sub annual and annual statistics

Yearly AEA data is coherent with quarterly statistics published by Statistics Sweden. 

15.3.2. Coherence - National Accounts

AEA follows the same industry allocation as NA, i.e. Nace rev 2. It includes emissions from the Swedish economy with the same definition as National Accounts. 

15.4. Coherence - internal

Industry separated data is cross-checked against e.g. energy statistics and inventory data. 


16. Cost and Burden Top

The data is produced cost-efficiently through the use of already calculated data for the Swedish reporting of AEA in March. Our production cost 60 hours.


17. Data revision Top
17.1. Data revision - policy

Data can be revised every year in due to new indata, new improved methodologies or new emissionfactors and so on.

17.2. Data revision - practice

Data is revised yearly when new data is available from the inventory and from energy statistics.

in 2023: 

Flight data have been changed to match OECD data.

New maritime data from Swedish transport agency.

Mining has been change due to new information on working machines.

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

Energy, stationary combustion:

Mining, Manufacturing industries, Electricity- gas- and heat industry
•                    Energy data from The Industry´s energy use (Energy Agency (EA) responsible) (micro data). Covers NACE 05-33, all companies in Sweden with more than 10 employees.
•                    Energy data from Electricity gas district heating supply (EA) (micro data). The survey covers all NACE 35 companies and all stationary energy use.
•                    Model for energy use in small enterprises. We use a temporary survey to cover stationary energy use within companies with fewer than 10 employees. The survey was done 2010 and has been updated with the trend within the investigation in the industry survey (first bullet above).
•                    Some energy data from the Swedish Greenhouse Gas and Air Pollutant Inventory (reported to UNFCCC/CLRTAP by SEPA), below named emission inventory.
•                    Emission factors from emission inventory.
Other industries, public sector, households
•                    Emissions are taken from the emission inventory

Energy, mobile combustion:
Emissions are taken from the emission inventory (by CRF/NFR, vehicle type and fuel type). We have collected data from OECD and Swedish transport agency.


Other emissions:
Fugitive emissions, emissions from industrial processes and product use, emissions from agriculture and waste management are taken from the emission inventory.



Annexes:
description of data sources
18.2. Frequency of data collection

Energy data collects in different time shedueles:

stationair Industry and energy statistics we use yearly statistics 2008-2021. quaterly statistics 2022.

In other cases we use yearly statistics from energy balances and from invetory. 

 

 

18.3. Data collection

The data collects for enviromental reports or energy surveys. See 18.1

18.4. Data validation

Statistics have been checked for accuracy once compiled.

18.5. Data compilation

Data compilation is done mainly from energy statistics and inventory data. 

18.5.1. Imputation - rate

Not applicable.

18.5.2. Method used to allocate emissions to economic activities

Source data is allocated to economic activities (NACE A*64) in this way: 


Energy, stationary combustion:
Mining, Manufacturing industries, Electricity- gas- and heat industry:
NACE is given in the data.
Other industries, public sector, households:
A model is used for distributing emissions from services based on energy statistics for premises (EA)


Energy, mobile combustion:
•                    To allocate road transport emissions to NACE*64 we use the vehicle register and yearly vehicle inspection results. We allocate the emissions based on vehicle ownership and mileage for the last year by type of car and fuel.
•                    Emissions from working machinery and off road vehicles are distributed to industries and households using background data from the emission inventory.

Other emissions:
•                    When necessary, emissions are distributed to industries and households by various models constructed using background data from emission inventory.

For nationally published results emissions from the public sector on the demand side are allocated to state, county council and municipal use. In the accounts reported to Eurostat this is allocated to the corresponding NACE categories to conform to the AEA.

18.5.3. Method used to determine and distribute road transport emissions

To allocate road transport emissions to NACE*64 we use the vehicle register and yearly vehicle inspection results. We allocate the emissions based on vehicle ownership and mileage for the last year by type of car and fuel.

18.5.4. Adjustments for residence principle

Residence adjustment for land transports is applied for the first time in 2019. We have concluded that imports equals exports for passenger cars (thus no residence adjustment applicable for these). For heavy duty vehicles we made a residence adjustment based on transport data from Transport Analysis (based on their Eurostat statistics) that is considered to be of good quality.

 

 

18.6. Adjustment

Not applicable 

18.6.1. Seasonal adjustment

Not applicable.


19. Comment Top


Related metadata Top


Annexes Top