[A-CG34] Global Carbon Cycle Observation and Analysis

[ACG34-P02] High-resolution mapping of anthropogenic CO₂ emissions in Japan

*齊藤 誠¹、山田 裕子¹ (1.国立環境研究所)

キーワード：人為起源CO2排出量、化石燃料、インベントリ

Fossil fuel combustion is a main contributor of increasing atmospheric carbon dioxide (CO₂) concentration. Fossil fuel CO₂ (FFCO₂) emission inventories have been usually compiled for global and national scales. However, evaluation of local climate action for global warming necessitates quantifying the FFCO₂ emissions from cities, which are responsible for more than 70% of the global FFCO₂, with more detailed information on temporospatial distribution of the emission at sub-city levels. This study proposes a new FFCO₂ emission inventory using a bottom-up approach for whole area in Japan. The emission inventory consists of the emissions from 3 sources: point (electricity generation, waste incineration, civil aviation, and waterborne navigation sectors); line (road transport sector); and area (industrial and commercial, residential, and agricultural machinery sectors) sources with 1 km spatial resolution and monthly temporal resolution. The emissions for each sector were calculated based on the census data and the national statistical data. We will present the calculation methodology for our emission inventory and the results with comparison with other emission estimates.