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

National Reference Metadata in Single Integrated Metadata Structure (SIMS)

Compiling agency: Statistics Lithuania


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 Lithuania

1.2. Contact organisation unit

Green Deal Statistics Division

1.5. Contact mail address


2. Metadata update Top
2.1. Metadata last certified 20/10/2019
2.2. Metadata last posted 26/09/2021
2.3. Metadata last update 02/10/2023


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

2008-2020

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, SFand 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

Description of Statistical Disclosure Control Methods, approved by Order No DĮ-124 of 27 May 2008 of the Director General of Statistics Lithuania.

Integrated Statistical Information System Data Security Regulations and Rules for the Secure Management of Electronic Information in the Integrated Statistical Information System, approved by Order No DĮ-42 of 20 February 2015 of the Director General of Statistics Lithuania (only in Lithuanian).

6.1. Institutional Mandate - legal acts and other agreements

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

6.2. Institutional Mandate - data sharing

Not applicable at national level.


7. Confidentiality Top
7.1. Confidentiality - policy

In the process of statistical data collection, processing and analysis and dissemination of statistical information, Statistics Lithuania fully guarantees the confidentiality of the data submitted by respondents (households, enterprises, institutions, organisations and other statistical units), as defined in the Confidentiality Policy Guidelines of Statistics Lithuania.

7.2. Confidentiality - data treatment

Description of Statistical Disclosure Control Methods, approved by Order No DĮ-124 of 27 May 2008 of the Director General of Statistics Lithuania.

Integrated Statistical Information System Data Security Regulations and Rules for the Secure Management of Electronic Information in the Integrated Statistical Information System, approved by Order No DĮ-42 of 20 February 2015 of the Director General of Statistics Lithuania (only in Lithuanian).


8. Release policy Top
8.1. Release calendar

Statistical information is published in accordance with an Official Statistics Calendar.

8.2. Release calendar access

Official Statistics Calendar

8.3. Release policy - user access

Statistical information is published on the Official Statistics Portal according to an Official Statistics Calendar, following the Official Statistics Dissemination Policy Guidelines and Statistical Information Preparation and Dissemination Rules.


9. Frequency of dissemination Top

Data are disseminated annually.


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

-

10.2. Dissemination format - Publications

-

10.3. Dissemination format - online database

Database of Indicators (Environmental protection and energy -> Environmental protection -> Air emission accounts)

10.3.1. Data tables - consultations

-

10.4. Dissemination format - microdata access

Microdata are available and provided for scientific purposes according to the provisions set in the Description of Procedures for the Provision of Confidential Statistical Data for Scientific Purposes. More information is available on the Official Statistics Portal, at Data for scientific purposes.

10.5. Dissemination format - other

-

10.5.1. Metadata - consultations

-

10.6. Documentation on methodology

-

10.6.1. Metadata completeness - rate

100 per ent

10.7. Quality management - documentation

-


11. Quality management Top
11.1. Quality assurance

The quality of statistical information and its production process is ensured by the provisions of the European Statistics Code of Practice and ESS Quality Assurance Framework

In 2007, a quality management system, conforming to the requirements of the international quality management system standard ISO 9001, was introduced at Statistics Lithuania. The main trends in activity of Statistics Lithuania aimed at quality management and continuous development in the institution are established in the Quality Policy. Monitoring of the quality indicators of statistical processes and their results and self-evaluation of statistical survey managers is regularly carried out in order to identify the areas which need improvement and to promptly eliminate the shortcomings.

11.2. Quality management - assessment

The indicators are analyzed by analyzing the quality of the information received. Additional quality control of statistical data at the macro level level is performed. The statistical indicators are compared with the indicators of the previous period and the corresponding other statistical surveys.


12. Relevance Top
12.1. Relevance - User Needs

The main users of statistical information are State authorities and agencies, international organisations, research community, students, whose needs are satisfied without a breach of the confidentiality principle.

12.2. Relevance - User Satisfaction

From 2005, user opinion surveys have been conducted on a regular basis. Official Statistics Portal traffic is monitored, website visitor opinion polls, general opinion poll on the products and services of Statistics Lithuania, target user group opinion polls and other surveys are conducted. In 2007, the compilation of a user satisfaction index was launched. The said surveys are aimed at the assessment of the overall demand for and necessity of statistical information in general and specific statistical indicators in particular.

For more information on user surveys and their results, see section User surveys on the Statistics Lithuania website.

12.3. Completeness

The information produced in accordance with the Official Statistics Work Programme is published.

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
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

Statistical information is published in the 10th  month after the end of the reference year.

14.1. Timeliness

-

14.1.1. Time lag - first result

Not applicable.

14.1.2. Time lag - final result

Not applicable.

14.2. Punctuality

Statistical information is published in accordance with an Official Statistics Calendar. In case of delay, users are notified in advance by indicating the reason and a new date of publication.

14.2.1. Punctuality - delivery and publication

Statistical information is published in accordance with an Official Statistics Calendar. In case of delay, users are notified in advance by indicating the reason and a new date of publication.


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

See 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

Comparable with ESA 95 requirements

15.3.1. Coherence - sub annual and annual statistics

Not applicable, because AEA data are annual.

15.3.2. Coherence - National Accounts

In coherence with the European System of National and Regional Accounts (ESA).

15.4. Coherence - internal

The bridging items are calculated reconciling the differences between the air emissions accounts totals and those totals reported in national emission inventories for greenhouse gases (UNFCCC) and air pollutants (CLRTAP).


16. Cost and Burden Top

Administrative data are used.


17. Data revision Top
17.1. Data revision - policy

Statistics Lithuania’s revision policy is provided in the document General Principles behind the Performance, Analysis and Announcement of Revisions of Statistical Indicators.

17.2. Data revision - practice

Yearly. In pursuance of the Regulation, in each data transmission to the Commission, Member States provide annual data for the years n-4, n-3, n-2, n-1 and n, where n is the reference year.

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

Administrative data of inventories submitted according to the United Nations Framework Convention on Climate Change (UNFCCC) and Convention on Long-Range Transboundary Air Pollution (CLRTAP).

18.2. Frequency of data collection

Annual

18.3. Data collection

Official administrative data of UNFCCC and CLRTAP inventories are downloaded from the Internet. National accounts, transport and energy statistics are also used.

18.4. Data validation

The results are analysed, the reasons for changes in the values are determined. The results are compared with the previous periods and administrative data sources.

18.5. Data compilation

An inventory-first-approach is used.

18.5.1. Imputation - rate

Not applicable.

18.5.2. Method used to allocate emissions to economic activities

An inventory-first-approach is used.

18.5.3. Method used to determine and distribute road transport emissions

1. Emissions from each mode of transport (passenger cars, LDV HDV) are divided between households and sectors on basis of number of vehicles.

Unfortunately, we have not found an action, which would help to improve the method already in use. We were unable to find any information on „Mileage“, which would be a replacement for the used „number of vehicles“.

2. Then Air emissions from each type of road transport are distributed between industries using estimated fuel use in industries. Data on Fuel use are taken from PEFA B2 table-end use of Motor spirit (without bio); Transport diesel (without bio); Refinery gas, ethane and LPG; Liquid biofuels.

18.5.4. Adjustments for residence principle

As tourism is not an important factor in Lithuania, it could be assumed that all emissions of passenger cars should be allocated to resident emissions.

Energy use of diesel and gasoline for heavy-duty vehicles and emissions from heavy-duty vehicles by resident and non-resident units are calculated using formulas from the Manual for air emission accounts. Statistics on goods/freight transport are used for this purpose. Residence principle were applied only to fuels used for heavy-duty trucks and emissions from heavy-duty trucks and were allocated to Nace 49.

 There are no domestic flights in Lithuania. 

The distribution of flights between national and foreign companies in Lithuania was used for the separate estimation of emissions by resident and non-resident companies. According to transport statistics, residents operate about 15 % of international flights from Lithuania. Same amount of fuel is needed for return flights, so share of emissions has to be doubled. Based on this share the appropriate amounts of emissions from international aviation have been added to NACE 51.

The gross tonnage of vessels arriving at Lithuanian ports was used as a criterion for breaking down emissions of resident and non-resident ships.

 

18.6. Adjustment

-

18.6.1. Seasonal adjustment

Not applicable.


19. Comment Top


Related metadata Top


Annexes Top