[A-AS01] Global Carbon Cycle Observation and Analysis

[AAS01-P11] Synthesis of top-down and bottom-up estimations of terrestrial CO₂ budget in Asia

*市井 和仁^1,2、近藤 雅征¹、Patra Prabir¹、佐伯 田鶴¹、眞木 貴史³、中村 貴⁴、丹羽 洋介³、植山 雅仁⁵、林 真智²、平 春²、柳 裕二¹、三枝 信子²、Asia-MIP Group (1.海洋研究開発機構 地球表層物質循環研究分野、2.国立環境研究所 地球環境研究センター、3.気象庁気象研究所、4.気象庁、5.大阪府立大学)

キーワード：Terrestrial, Synthesis, Carbon Dioxide

In the framework of Environment Research and Technology Development Funds (2-1401) from the Ministry of the Environment of Japan, we initiated synthesis analysis toward better estimations and understandings of terrestrial CO₂ budget in Asia. We used multiple different data products such as atmospheric inverse analysis (top-down estimation), terrestrial ecosystem models, remote sensing data, and data-driven models (bottom-up estimation). Our analysis focuses on (1) inter-decadal changes in terrestrial CO₂ fluxes at continental scales (Asia and Siberia), (2) testing consistency of terrestrial sink magnitude between top-down and bottom-up estimations in Asia, and (3) detection and analysis of ‘hotspot’ of terrestrial CO₂ budget changes in Siberia and tropical Asia. We will show these progresses, and discuss future direction of these studies.
Acknowledgement
This study was supported by the Environment Research and Technology Development Funds (2-1401) from the Ministry of the Environment of Japan, and the JSPS KAKENHI (grant No. 25281003).