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RIVM report 773301 001 / NRP report 410200 051 page 9 of 142
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EDGAR 2.0 provided global annual emissions for 1990 of greenhouse gases CO 2 ,CH 4 and N 2 Oand
precursor gases CO, NO x , NMVOC and SO 2 , both per region and on a 1 o x1 o grid. Similar inventories
were compiled for a number of CFCs, halons and methyl bromide, methyl chloroform. This report
discusses the applications of EDGAR 2.0 over the last couple of years as well as the validation and
uncertainty analysis carried out. In addition, the approach taken to compile EDGAR 3.0 is discussed.
This work is linked into and part of the *OREDO (PLVVLRQV ,QYHQWRU\ $FWLYLW\ (GEIA) of the
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The number of downloads from the FTP site increased from 50 per quarter in 1997 to nearly 100 in
mid-1999. Of the 700 quarterly registered users in the logged 2½ year period, most reside in OECD
countries. Most of these are modellers, but EDGAR data are also extensively used for policy
applications for which emissions data on country level were calculated with the EDGAR information
system.
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The overall aim for Version 3.0 was to update the inventories from 1990 to 1995, and for direct
greenhouse gases also to 1970, to include new greenhouse gases. After consultation of the users, the
objectives have been somewhat changed and extended. Thus, specific aims were:
ú update/extension from 1990 to 1995;
ú extend time series for direct greenhouse gases to 1970-1995;
ú include new ‘Kyoto’ greenhouse gases HFCs, PFCs, SF 6 ;
ú greenhouse gas emissions also on per country basis using IPCC source categories;
ú include NH 3 ;
ú improve/include uncertainty estimates and time profiles.
For updating and extended time series different priorities were given for the following groups of
gases:
ú direct greenhouse gases CO 2 ,CH 4 ,N 2 O and new gases HFCs, PFCs, SF 6 : 1970-1995;
ú ozone precursors CO, NO x , NMVOC as well as SO 2 and NH 3 : update 90 and 95;
ú extend CFCs, halons, HCFCs to 1900-1995
Special attention was given to the compilation of a reference dataset for new gases as none was
available. For the update of the current Version 2.0, we followed the following principles:
ú $FWLYLW\GDWD: update by including relevant statistics for the period 1970-1995, after checking
for possible changes of source categories; this implies the inclusion of the ‘new’ countries, e.g.
for the former USSR.
ú (PLVVLRQIDFWRUV: only to be changed for 1990 if validation showed major discrepancies; only
to be changed for 1995 compared to 1990 if there are concrete indications that there major
changes have occurred that cannot be neglected; the same holds for factors for 1970, in
particular for direct greenhouse gases.
ú *ULGPDSV: only to be updated if maps available of better quality or better applicability.
ú $GGLWLRQDOVRXUFHV: coal fires, oil fires, vegetation fires in temperate regions, domestic waste
combustion and wastewater handling were added, based on the significance in some countries
for specific emissions.
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In order to judge whether update of methods or emission factors for 1990 is needed, a validation of
V2.0 data for 1990 was performed: for greenhouse gases with National Communications submitted