Non-methane volatile organic compounds (NMVOCs) include a large
number of chemical species which differ significantly in their chemical
characteristics and thus in their impacts on ozone and secondary organic
aerosol formation. It is important that chemical transport models (CTMs)
simulate the chemical transformation of the different NMVOC species in the
troposphere consistently. In most emission inventories, however, only total
NMVOC emissions are reported, which need to be decomposed into classes to fit
the requirements of CTMs. For instance, the Emissions Database for Global
Atmospheric Research (EDGAR) provides spatially resolved global anthropogenic
emissions of total NMVOCs. In this study the EDGAR NMVOC inventory was
revised and extended in time and in sectors. Moreover the new version of
NMVOC emission data in the EDGAR database were disaggregated on a
detailed sector resolution to individual
species or species groups, thus enhancing the usability of the NMVOC emission
data by the modelling community. Region- and source-specific speciation
profiles of NMVOC species or species groups are compiled and mapped to EDGAR
processes (detailed resolution of
sectors), with corresponding quality codes specifying the quality of the
mapping. Individual NMVOC species in different profiles are aggregated to 25
species groups, in line with the common classification of the Global
Emissions Initiative (GEIA). Global annual grid maps with a resolution of
0.1° × 0.1° for the period 1970–2012 are produced
by sector and species. Furthermore, trends in NMVOC composition are analysed,
taking road transport and residential sources in Germany and the United
Kingdom (UK) as examples
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