Development of a sector-specific and chemically-speciated VOCs emissions in Northeast Asia using the GAINS-IV framework

Jang, Y. (2021). Development of a sector-specific and chemically-speciated VOCs emissions in Northeast Asia using the GAINS-IV framework. IIASA YSSP Report. Laxenburg, Austria: IIASA

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Abstract

This study aims to develop a comprehensive VOC emission data which are readily to use in the policy planning and evaluation of mitigation measures in Northeast Asia and can be utilized in support of air quality modeling. In the present GAINS-Asia, most of VOCs emissions in Solvent sector which is account for more than 50% of total emission of VOC are classified 1 sector named “other VOCs”. I analyzed multiple emissions inventories to develop sector-specific VOCs emissions. In addition, the speciation profiles from were linked with the bysector VOCs emissions to estimated speciated VOC emissions. These emissions were used in the air quality model to forecast and evaluate emission reduction policy over the East Asia atmosphere.
In order to improve the predictability of air pollution and climate change, it is essential to establish an emissions information not only for anthropogenic sources, but for natural ones. Since the Biogenic VOCs(BVOCs) emissions are another major contributor for the SOA formation, BVOCs also were estimated along with GAINS-based anthropogenic VOCs(AVOCs).
Through this study, 1)detailed sector-specific AVOCs emissions were developed in the GAINS model, 2)chemically-speciated AVOCs emissions were estimated in relation with the sector-based emissions inventory, 3)BVOC emissions were estimated using the MEGAN Model(Guenther et al., 2006) model, 4)The result was compared with PM2.5 emissions and SOA emissions for better understanding of the effect of VOCs reduction policies in Northeast Asia region.
As a result of SOAs emissions along with primary PM2.5 emissions were compared by sector and by country, SOAs emissions from solvents use sector are high due to its high SOA yield. The emission of SOA are higher than the emissions in primary PM2.5 for all three countries. From the scenario study, China shows high control potential in both primary PM and SOAs. Only SOAs emission, however, show a great control potential in Korea and Japan, where primary PM emissions are already been reduced much.

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