Air Quality Governance in the ENPI East Countries Training on emission inventories Spatial distribution of emissions 11-12 December, 2013, Tbilisi, Georgia.

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Presentation transcript:

Air Quality Governance in the ENPI East Countries Training on emission inventories Spatial distribution of emissions December, 2013, Tbilisi, Georgia

Outline Reporting requirements Best practise Examples of simple approach to develop distribution keys

Reporting requirements Guidelines for reporting emission data under the convention on long-range transboundary air pollution (ECE/EB.AIR/97) Emissions should be spatially allocated in the EMEP grid using national datasets appropriate to each source category Gridded emissions should be reported in the aggregated sectors (GNFR) for each EMEP grid cell that overlie the national territory. Reported substances should include sulphur oxides, nitrogen oxides, ammonia, NMVOCs, carbon monoxide (CO), PM 2.5, PM 10, lead, cadmium, mercury, polycyclic aromatic hydrocarbons (PAHs), hexachlorobenzene (HCB) and dioxins and furans (PCDD/F). Deadline for submission of gridded emissions is 1 st March. Gridded emissions should be reported for every fifth year from – Parties are encouraged to update their gridded data more frequently where changes in spatial patterns have occurred, so that the models can represent the most up-to-date information.

Reporting guidance (1) The new EMEP grid: – 0.1° × 0.1° longitude- latitude – WGS84 geographic coordinate system

Reporting guidance (2) GNFR categories: – A_PublicPowerL_OtherWasteDisp – B_IndustrialCombM_WasteWater – C_SmallCombN_WasteIncin – D_IndProcessO_AgriLivestock – E_FugitiveP_AgriOther – F_SolventsQ_AgriWastes – G_RoadRailR_Other – H_ShippingS_Natural – I_OffRoadMobT_IntAviCruise – J_AviLTOz_memo – K_CivilAviCruise

Reporting guidance (3) Point sources – emission source at a known location (geographical coordinates (X,Y), e.g. derived from address, for the main point of emission). Examples: power stations, industrial plants Area sources – emission source are too numerous or small to be individually identified as point sources or from which emissions arise over a large area. Area sources is spatially associated with an area (a polygon). Examples: residential heating, non-road mobile sources. Line sources – emission source that exhibits a line type of geography Examples: road, railway, pipeline or shipping lane Grids – point, line and polygon features can be converted to grids and then several different layers of information (emission sources) can be aggregated

Combining different spatial features

Reporting guidance (4) Use key category analysis to identify the most important sources and give the most resources to these. Select proxy data that represent the spatial emission pattern and intensity best. Spatial data that cover the entire national territory are preferred. Use of GIS tools and skills can improve the usefulness of available data. Make use of existing spatial datasets. It is not possible to update all the spatial datasets every year (both due to resources and data availability). Consider costs and benefits before deriving new spatial data sets from new surveying or data processing.

Reporting guidance (5) For consistency purpose, use the same spatial proxy data for all years if possible and if more accurate data has not become available. Gridded emissions are reported on an aggregated level, which in many cases should ensure anonymity. Problems with use of confidential data might be solved by getting aggregated data from the data supplier or by (signing of) confidentiality agreements. It is advisable to consider the resolution (spatial detail) required in order to meet any wider national or international uses, e.g. air quality modelling on national, regional or local level.

General decision tree for emissions mapping Tier 3 – include estimates that are based on closely related spatial activity statistics e.g. road traffic flows by vehicle type, spatial fuel consumption data by sector Tier 2 – use of surrogate statistics that relate to the sector detailed sector specific employment, population or household size and number Tier 1 – use of loosely related surrogate statistics E.g. urban-rural land cover data and population density

Spatial data sets, national Population and employment Gas distribution networks Agricultural data Road network information Rail Airport activity data Aviation National shipping Point source information Local inventory data

Spatial data sets, international Lloyds Register (shipping) ICAO and EUROCONTROL MapCruzin COPERNICUS ESA GlobCover SEDAC population CORINE – land cover – population Eurostat – Animal census FAO INSPIRE Open Street Maps ESRI data

Approach used by Denmark (1) Gridding of emissions from area sources in stationary combustion are based on proxy distribution keys * Regional energy consumption inventory for oil boilers, natural gas boilers and solid fuel installations for coal, wood, agricultural waste, gas oil, and natural gas SourceSnapFuelProxy distribution key Energy industries 0101, 0102 All(Large) point sources Small combustion 0201, 0202, 0203 Brown coal briquettesLike coal * BiogasLike agricultural waste * LPGLike wood * Residual oilIndustrial areas

Approach used by Denmark (2) Road transport – Annual average daily traffic per vehicle type for the entire Danish road network, based on traffic census and fleet data. – Gridding made for 9 categories: Non-road mobile sources – National land use maps Industrial area Agricultural area Forrest area One-storage housing Road typeVehicle type Roads in urban areas, UPassenger cars and two-wheelers, P Roads in rural areas, RVans, V Highway, HHeavy duty (trucks and busses), T

Approach used by Denmark (3) Industry and Solvent and other product use – Gridding based on population density and national land use maps including Industrial areas Areas with single storage buildings (residential area with one/two family houses) Agriculture – Spatial data from Statistics Denmark and a number of agricultural registers, e.g. the Central Husbandry Register (animals on farm level), the General Agriculture Register (crops on field and farm level) and the Land Parcel Identification System (agricultural soils on field level) – Gridding is made separately for each source

Approach used by JRC, EDGAR (1) Split the national emission to smaller administrative units, e.g. regions, provinces or communities Emissions are distributed spatially in each area based on spatial data different from the data used to split the national emissions on administrative units – combination of different proxy data, e.g. population and road network for road transport (PC, LC, MC) to increase the gradient between city and intercity transport

Approach used by JRC, EDGAR (2) Indsæt kort, hvis muligt

Approach used by United Kingdom Road transport – Traffic flow for roads are based on ordnance survey, road network, and traffic census count points. – Emissions are calculated by vehicle type and then aggregated to the appropriate grid resolution. Domestic emissions – High resolution gas and electricity statistics – Survey and census – Estimated energy consumption

Approach used by the Netherlands Degree of urbanisation – A: densely populated – B: intermediate populated – C: thinly populated Energy consumption weighting –

Examples of simple approach to develop distribution keys (1) Spatial data – Geographical coordinates for (large) point sources, e.g. power plants, industrial plants and farms – Population density – Road network Annual average daily traffic per road segment if available for different vehicle types Travel speed if available – Land use maps, e.g. agricultural areas, industrial areas and housing areas – EMEP grid

Examples of simple approach to develop distribution keys (2) Source1st level2nd level3rd level4th level Stationary combustion Population densityHeating districtsHeating demand per building … TransportRoad networkRoad typesAverage daily traffic per vehicle category … AgricultureAgricultural areasFields and farmsAnimals and crops… Prioritise major sources Figure out an appropriate methodology – which spatial proxy data are needed? and – which spatial proxy data are available? Improve gridding methodologies when new spatial data become available

The SPREAD Model - Spatial High Resolution Emission to Air Distribution Model SPREAD includes: ● 10 sub-models ● > 15 databases ● > 30 distribution keys ● > 50 distribution ● a module for extraction of results ● all or selected pollutants ● all or selected sources ● customised aggregation level, e.g. sectoral total or source level National emissions LPS Stationary combustion, PS Stationary combustion, AS Road traffic Other mobile sources Fugitive emissions Industrial processes Solvents and other product use AgricultureWaste

Examples of SPREAD sub-models (1) Mobile sources Mobile sources RoadRailway Aviation, LTO Aviation, cruise FerriesFishing Other navigation Mobile in agriculture Mobile in forestry Mobile in industry Mobile in household Military

Examples of SPREAD sub-models (2) Agriculture Agriculture Enteric fermentation Manure management Agricultural soils Crop residue N-fixing crops Manure application Fertilizer application Leaching and run-off Atmospheric deposition SludgePRPHistosols Field burning

Danish gridded emissions from the SPREAD model

Plejdrup, M.S. & Gyldenkærne, S., 2011: Spatial distribution of emissions to air – the SPREAD model. National Environmental Research Institute, Aarhus University, Denmark.

Thank you for your attention