Speciation of anthropogenic emissions of non-methane volatile organic compounds: a global gridded data set for 1970-2012
Speciation of anthropogenic emissions of non-methane volatile organic compounds: a global gridded data set for 1970-2012
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DOI：
10.5194/acp-17-7683-2017
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发表时间：
2017-06-26
影响因子：
6.3
通讯作者：
Friedrich, Rainer
中科院分区：
文献类型：
--
作者：
Huang, Ganlin;Brook, Rosie;Friedrich, Rainer
非甲烷挥发性有机化合物（NMVOCs）包括大量化学物质，它们的化学特性有很大不同，因此对臭氧和二次有机气溶胶形成的影响也有很大不同。化学输运模式（CTMs）对不同NMVOC在对流层的化学转化具有一致性的模拟意义。然而，在大多数排放清单中，只报告了NMVOC的总排放量，需要将其分解为类别，以符合CTMs的要求。例如，全球大气研究排放数据库（EDGAR）提供了空间分解的全球NMVOCs总人为排放。本研究对EDGAR NMVOC清单进行了修订，并在时间和部门上进行了扩展。此外，将EDGAR数据库中的新版本NMVOC排放数据按详细的扇区分辨率分解到单个物种或物种群，从而提高了建模界对NMVOC排放数据的可用性。编译NMVOC物种或物种群的区域和来源特定物种概况，并将其映射到EDGAR过程（部门的详细分辨率），并使用相应的质量代码指定映射的质量。根据全球排放倡议（GEIA）的共同分类，不同剖面的单个NMVOC物种合计为25个物种组。1970-2012年期间，分辨率为0.1度x 0.1度的全球年度网格地图按扇区和物种制作。此外，以德国和英国的道路运输和住宅来源为例，分析了NMVOC组成的趋势。
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 degrees x 0.1 degrees 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.