A global emissions source database called EDGAR has been developed jointly by TNO and RIVM to meet the urgent need of atmospheric chemistry and climate modellers and the need of policy-makers. The EDGAR database was to estimate the annual emissions of direct and indirect greenhouse gases (CO2, CH4, N2O; CO, NOx, non-methane VOC; SO2), including ozone-depleting compounds (halocarbons) for 1990 on a regional and grid basis. To meet the aim of establishing the global emissions from both anthropogenic and biogenic sources, a complete set of data would be required to estimate the total source strength of the various gases with a 1x1 degree resolution (altitude resolution of 1 km), as agreed upon in the Global Emissions Inventory Activity (GEIA) of the International Atmospheric Chemistry Programme (IGAC). As insights in this field are still changing, due attention was paid in the setup of the system to flexibility on the disaggregation of sources, spatial and temporal resolution, and species.
The global total source strength of anthropogenic emissions in 1990 is estimated to be 29.2 Pg CO2 (including partial oxidation to other compounds than CO2), 320 Tg CH4, 3.2 Tg N2O-N (excluding a background emission from arable lands of 1.4 Tg N2O-N), 974 Tg CO, 102 Tg NO2, 149 Tg SO2, and 178 Tg NM-VOC emissions. In addition, natural emissions of N2O and reactive NMVOC are included in the database, with global estimates of 6.6 and 3.6 Tg N2O-N from natural soils and oceans, respectively, and 1182 Tg NMVOC (as CH4) from vegetation and oceans. An indication of the uncertainty in the data has been provided separately. A partial validation, by comparing our estimates per major source with other global total estimates, and for NO2 and SO2 by comparing with other regional inventories for Europe and Asia, generally showed a good agreement.
The main goal of this project was to create a database with the information necessary to calculate globally gridded emissions in the base year 1990, and also historical emissions where both activity levels and emission factors were readily available. Version 2.0 of EDGAR includes data sets covering all major anthropogenic and most natural sources of greenhouse gases for 1990, regionally as well as on a 1ox1o grid. For number of sources, e.g. CO2, historical emissions can also be calculated. It has a limited function in calculating past and future emissions, and does not include uncertainty estimates per country or per grid cell, but regional overall uncertainty by source and compound.
So as not to duplicate activities worldwide, RIVM and TNO have, amongst others, been cooperating with activities in the framework of the Global Emissions Inventory Activity (GEIA), which is a component of the International Global Atmospheric Chemistry Programme (IGAC) Core Project of the International Geosphere-Biosphere Programme (IGBP). In this programme inventories are developed and exchanged between the participating international groups interested in this area. In the framework of GEIA, TNO and RIVM have committed themselves to coordinating a number of inventories (anthropogenic VOC, anthropogenic and natural N2O emissions). Besides these inventories/contributions from EDGAR to GEIA, earlier inventories by GEIA and other institutes are included in EDGAR.
The major difference between inventories of EDGAR and of GEIA is that GEIA inventories provide the best global gridded inventories available to date for specific compounds or specific source categories. However, as they are partially compiled by concatenation of existing regional emission inventories on grid, the GEIA inventories may not always cover all source categories, nor may they have options to distinguish major source categories. The EDGAR inventories, however, have been developed using less detailed national data, but try to be as comprehensive as possible and to be complete in geographic coverage and source categories - at least for the anthropogenic sources. In this respect, most EDGAR inventories could be considered as 'preliminary GEIA inventories'. Also, the EDGAR suite of inventories try to be as consistent as possible, e.g. avoiding different spatial distributions patterns or different reference years across different compounds and they provide emission data per major and per detailed source category for all compounds. In addition, the EDGAR database includes activity levels and emission factors separately, to guarantee maximum applicability for policy purposes.
EDGAR Version 2.0 has been validated by comparison of global results for main sources with other global estimates. Our estimates in Version 2.0 are generally in line with 'best estimates' of IPCC, which we consider to be the aggregates of various scientific emission estimates, and certainly within the uncertainty ranges. Further validation of EDGAR results, either by comparison with other inventories or in more regional detail, has not been carried out (except for NOx and SO2 in Europe and Asia).
In Olivier et al. (1996, 1999) a scientific description of the contents of Version 2.0 is given as well as some of the tabular and gridded results extracted from the database, including a first comparison with IPCC estimates. Also uncertainties connected to the data and to the resulting emission tables and gridded maps are discussed in this report. The potential for policy applications are shown by making different cross-sections per source, region and year, from which we can infer the locations and types of the largest contributors of greenhouse-gas emissions, and identify the fastest growing sources. By comparing activity intensities and emission factors regionally or in time, we can draw conclusions on which emission sources can be controlled most efficiently. We have pointed out key sectors and regions where substantial emissions may be achieved.
Our main objective in creating an emission database serving both policy-making and atmospheric modelling has been accomplished now. In conjunction with the uncertainty table and comparisons provided, we have created a comprehensive database with consistent underlying activity, emission-factor and grid-allocation data per source sector. The database, located at RIVM, serves as an analysis tool, and an emission generator for other atmospheric modelling groups, both within RIVM and TNO, and externally. In addition, it functions as the database to provide the IMAGE model with the basic data to drive the model calculations on emissions.
Results from the database are distributed through the website (http://www.rivm.nl/env/int/coredata/edgar/index.html) as well as through anonymous FTP (info.rivm.nl; sub-directory /pub/lae/EDGARV20) in order to provide external users with a consistent set of estimated emissions data for 1990 of direct and indirect greenhouse gases (including ozone depleting substances and SO2) for all anthropogenic sources and most anthropogenic sources.
More infromation: http://www.rivm.nl/env/int/coredata/edgar/
The EDGAR database is a joint project of RIVM and TNO and stores global inventories of direct and indirect greenhouse gas emissions including halocarbons both on a per country basis as well as on 1o x 1o grid. The database has been developed with financial support from the Dutch Ministry of the Environment (VROM) and the Dutch National Research Programme on Global Air Pollution and Climate Change (NRP), in close cooperation with the Global Emissions Inventory Activity (GEIA), a component of the International Atmospheric Chemistry Programme (IGAC) of the International Geosphere-Biosphere Program (IGBP).
Thousant Metric Tons of CH4
GEO Data Category:
Emissions of GHG, ODS, Dust, Metals
Pollution, air, emissions, CH4, energy, RIVM, national level
1970, 1975, ..., 1995
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GIS Data Info
Statistics Data Info
The value "-9999" corresponds to "No Data".
National and aggregations
Several values (e.g. non OECD member countries) for the year 1970 are based on the data for year 1971.
Calculated pre 1991-1992 relative country share
Former Yugoslavia SFR:
Emissions of CH4 - Energy (RIVM). "Energy" comprises production, handling, transmission and combustion of fossil fuels and biofuels (IPCC category 1A and 1B) as follows:
Industrial sector (IPCC 1A2);
Power generation (IPCC 1A1a);
Other transformation sector (all) (IPCC 1A1b,c);
Residentials, commercials and other sector (IPCC 1A4);
Transport road (IPCC 1A3b);
Transport land non-road (IPCC 1A3c,d-ii,e);
Transport air (all) (IPCC 1A3a);
Transport international shipping (IPCC 1A3d-i);
Coal production (including CH4 recovery) (IPCC 1B1a);
Oil production, handling and flaring (IPCC 1B2a,c);
Gas production (IPCC 1B2b-i);
Gas transmission (IPCC 1B2b-ii);
Industry v3(IPCC 1A2);
Power generation (IPCC 1A1a);
Charcoal production (IPCC 1B1b);
Residential (IPCC 1A4);
Transport road (IPCC 1A3b).
Data source. The EDGAR set of inventories were compiled from the perspective of providing good quality reference estimates of anthropogenic emission sources per source category, based on scientifically sound input data. This was done by using (a) international statistics as activity data, since these are comparable between countries in definition and units, (b) emission factors from the scientific literature, also common across countries when judged comparable, and (c) grid maps for allocating sectoral emissions of a country to a grid.
EDGAR 3.2 by RIVM/TNO (Olivier, J.G.J. and Berdowski, J.J.M., 2001, Global emission sources and sinks. In: J. Berdowski, R. Guicherit and B.J. Heij (eds.), The Climate System: 33-77. Lisse: Swets & Zeitlinger Publishers).
For more detailed information about the EDGAR 3.2 database and data source see: http://www.rivm.nl/env/int/coredata/edgar/index.html/.
1 Thousand Metric Ton corresponds to 1 Gigagram.