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

National Reference Metadata in Single Integrated Metadata Structure (SIMS)

Compiling agency: Central Statistical Bureau of Latvia


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

Central Statistical Bureau of Latvia

1.2. Contact organisation unit

Environment and Energy Statistics Section, Agricultural and Environmental Statistics Department

1.5. Contact mail address

Central Statistical Bureau of Latvia, Lāčplēša iela 1, Rīga, LV-1301


2. Metadata update Top
2.1. Metadata last certified 30/09/2022
2.2. Metadata last posted 23/03/2023
2.3. Metadata last update 30/09/2020


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

2000-2021

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
At EU level:
• Regulation (EC) No 223/2009 of the European Parliament and of the Council, of 11 March 2009, on the transmission of data subject to statistical confidentiality to the Statistical Office of the European Communities.
At national level:
• Statistics Law (in force since 4 June 2015), Section 17.
 
7.2. Confidentiality - data treatment

Published data should not allow identification of single consumers.

Central Statistical Bureau of Latvia (CSB) does not disclose the data which by their nature might be subject to commercial confidentiality. Pursuant to the requirements of national legislation, Section 17 of the Statistics Law, Section 5 and 16 of the Freedom of Information Law, Sections 6, 7 and 27 of the Personal Data Protection Law, and in accordance with the item 5 of the CSB Quality Guidelines, CSB provides confidentiality and protection of information given by respondents, as well as individual information received from other sources.


8. Release policy Top
8.1. Release calendar

09.11.2023.

8.2. Release calendar access

CSB website: https://stat.gov.lv/en/calendar?Dates=%22Next+year%22 

8.3. Release policy - user access

Air emissions accounts in Latvia are published on the CSB website under the heading Environment and Energy - Environment – Air emission accounts (NACE Rev. 2). The statistics is published in accordance with the Statistics Law and the European Statistics Code of Practice, respecting the professional independence and aimed at objectivity, transparency and equal treatment of all consumers. The statistical information published by the CSB is accessible to all data users at the same time and under the same conditions.


9. Frequency of dissemination Top

Data are disseminated annually.


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

There is no national press release on the data.

10.2. Dissemination format - Publications

 Air emission accounts in 2021 are included in the publication "Environment of Latvia in Figures: Climate Changes, Natural Resources and Environmental Quality in 2022" (available in English and Latvian). The collection is available on the CSB website in section Publications.

https://www.csb.gov.lv/en/statistics/statistics-by-theme/environment-energy/weather/search-in-theme

 

10.3. Dissemination format - online database

Data are available to all users on the CSB website database in section Environment and Energy – Environment-Air emission accounts (NACE Rev. 2).

 https://stat.gov.lv/en/statistics-themes/environment/air-emissions/tables/gpe010-air-emission-accounts-nace-rev-2?themeCode=GP 

10.3.1. Data tables - consultations

Not applicable.

10.4. Dissemination format - microdata access

Not applicable.

10.5. Dissemination format - other

Currently, data are not disseminated in other ways.

10.5.1. Metadata - consultations

Not applicable.

10.6. Documentation on methodology

https://www.csb.gov.lv/en/statistics/statistics-by-theme/environment-energy/environment/tables/metadata-air-emissions-accounts

 

10.6.1. Metadata completeness - rate

Not applicable.

10.7. Quality management - documentation

All quality documentation of Latvian official statistics and CSB is available on the CSB website in the section Documents – National Statistical System of Latvia –Quality assurance framework. The section includes, e.g., Quality Policy of CSB, Statistical Dissemination Policy, Revision Policy, Quality Policy of the National Statistical System of Latvia, Memorandum of Understanding for Implementation of Quality Policy of the NSS of Latvia.


11. Quality management Top
11.1. Quality assurance

On 29 November 2018, CSB gained ISO 9001:2015 standard certificate “Quality Management Systems – Requirements”. The certification refers to the production of official statistics – planning, data acquisition, processing, analysis, and dissemination. Currently, there is no self-assessment report for air emission accounts.

11.2. Quality management - assessment

Overall data quality is good. 


12. Relevance Top
12.1. Relevance - User Needs

Data are freely available to general public.

12.2. Relevance - User Satisfaction

Not applicable

12.3. Completeness

Data are complete according to relevant regulation.

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
14.1. Timeliness

Data are published 23 months after the reference period. 

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.

Latvia transmitted the data to Eurostat on 30.09.2022, covering the years 2000-2020,

14.2.1. Punctuality - delivery and publication

Not applicable.


15. Coherence and comparability Top
15.1. Comparability - geographical

AEA is 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

Data are coherent with ESA and PEFA.

15.3.1. Coherence - sub annual and annual statistics

Not applicable, because AEA data are annual.

15.3.2. Coherence - National Accounts

Data are coherent with National accounts

15.4. Coherence - internal

Totals and subtotals are correct


16. Cost and Burden Top

0.4 FTE.


17. Data revision Top
17.1. Data revision - policy

Data are not revised in between annual releases.

17.2. Data revision - practice

All data from 2000-2020 were recalculated. Data were recalculated because data in emission inventories (UNFCC and CLRTP) data were revised. 

 

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 source Inventory reports to UNFCC and CLRTP. Acitivy data about energy consumption  are collected with survey “2-EK, Survey on stocks, production, receipts and consumption of energy resources”. It is a sample survey, and all groups of NACE are included, starting from 01-93. Data on energy consumption including for transport of different energy products are obtained from this survey. Other data are allocated to NACE based on information in inventory reports and underlying activity data.

Emissions from fuel combustion activities were allocated to industries using detailed energy statistics. As in first place emissions were calculated using energy statistics as activity data provided by CSB. Fugitive emissions were allocated based on information given in Inventory reports. All emissions from Agriculture sector were allocated to NACE 01. Emissions from the Waste sector were allocated based on information on waste and wastewater. Most of emissions from Industrial processes and product use were allocated directly to respective NACE. As emissions from cement production to NACE 23, asphalt roofing to NACE 43 etc. Part of emissions were using economic data (turnover)-paint application and degreasing and dry cleaning; emissions from Chemical products, manufacture and processing arises from on production of pharmaceutical formulations and perfumery products and were allocated to NACE 20. As described in inventory report emissions from N2O used in anesthesia activities are estimated taking into account amount of N2O actually used in medicine sector, so these emissions were allocated to NACE 86. CO2 emissions from non-energy products from fuels use was allocated to NACE 49, NACE 16 and NACE 31-32 based on information in inventory report and activity data.

 

 

18.2. Frequency of data collection

Annually

18.3. Data collection

Data is based on administrative data sources

18.4. Data validation

No, different data sources were compared while building energy balance and collecting energy data with surveys.

18.5. Data compilation

For data compilation Inventory first method is used.

Emissions from fuel combustion activities were allocated to industries using detailed energy statistics. As in first place emissions were calculated using energy statistics as activity data provided by CSB. Fugitive emissions were allocated based on information given in Inventory reports. All emissions from Agriculture sector were allocated to NACE 01. Emissions from the Waste sector were allocated based on information on waste and wastewater. Most of emissions from Industrial processes and product use were allocated directly to respective NACE. As emissions from cement production to NACE 23, asphalt roofing to NACE 43 etc. Part of emissions were using economic data (turnover)-paint application and degreasing and dry cleaning; emissions from Chemical products, manufacture and processing arises from on production of pharmaceutical formulations and perfumery products and were allocated to NACE 20. As described in inventory report emissions from N2O used in anesthesia activities are estimated taking into account amount of N2O actually used in medicine sector, so these emissions were allocated to NACE 86. CO2 emissions from non-energy products from fuels use was allocated to NACE 49, NACE 16 and NACE 31-32 based on information in inventory report and activity data.

18.5.1. Imputation - rate

Not applicable.

18.5.2. Method used to allocate emissions to economic activities

Main data source for energy data is “2-EK, Survey on stocks, production, receipts and consumption of energy resources”. It is sample survey, and all groups of NACE are included, starting from 01-93. Data on energy consumption including for transport of different energy products are obtained from this survey. Other data are allocated to NACE based on information in inventory reports and underlying activity data.

18.5.3. Method used to determine and distribute road transport emissions
Main data source for fuel consumption is “2-EK, Survey on stocks, production, receipts and consumption of energy resources”. It is sample survey (~6000 respondents), and all groups of Nace are included, starting from 01-96. Data on energy consumption for transport of different energy products - gasoline, diesel biodiesel and LPG are obtained from this survey. Survey contains information on type of vehicle for which fuel are used - passenger cars, heavy duty trucks, buses. 
Households fuel consumption are estimated using information of number of different types of vehicles owned by private persons.
Data on use of energy for road transport are distributed between industries and households using information from GHG inventories about fuel use (gasoline, diesel, LPG and biodiesel) for each vehicle type - Passenger cars, Buses, Heavy duty-vehicles (HDV), Light duty-vehicles (LDV) and Mopeds & Motorcycles by applying share from Survey “2-EK, Survey on stocks, production, receipts and consumption of energy resources”. Fuel use for Mopeds & Motorcycles are all allocated to Households.
Air emissions from road transport then are distributed between industries and households using estimated fuel use in industries and households.
 
18.5.4. Adjustments for residence principle
 
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.
According to energy statistics, residents operate about 60% of international flights from Latvia. Same amount of fuel is needed for return flights, so share of emissions has to be doubled. Energy use by residents abroad and energy use by non-residents for international aviation were calculated using data from surveys “2-bunkering; Survey on oil delivery to ships and aircrafts” and “2-EK Report on purchase and use of energy resources".  From survey “2-EK”data we gather data on total amounts of fuel used for aviation and amounts of fuel bought and used abroad. Combining data from both surveys we estimated also amounts of fuel purchased by non-residents for international air transportation. Based on this share the appropriate amounts of emissions from international aviation have been added to NACE 51. 
Emissions from International maritime navigation was estimated that about 2% of emissions “belong” to ships operating under Latvian flag, those amounts were added to NACE 50
 
18.6. Adjustment

Not applicable.

18.6.1. Seasonal adjustment

Not applicable.


19. Comment Top


Related metadata Top


Annexes Top