[A-CG54] Biogeochemical cycles in Land Ecosystem

[ACG54-P05] Subdaily natural CO₂ flux simulation in Kantō area to support inversion analysis of Tokyo’s anthropogenic CO₂ emission

*Qiao Wang¹, Ryoichi Imasu¹, Yutaka Arai¹, Satoshi Ito¹, Takahiro Sasai², Hiroaki Kondo³ (1.AORI, The University of Tokyo, 2.Department of Geophysics, Tohoku University, 3.National Institute of Advanced Industrial Science and Technology)

Keywords:GPP, NPP, NEP, BEAMS, diurnal variation

Previous ground monitoring data analysis (Imasu and Tanabe 2018) suggests both diurnal and seasonal variations of atmospheric CO₂ concentration in greater Tokyo area. Such spatiotemporal variability is attribute to a combination of atmospheric processes, human activities and land-atmosphere CO₂ exchange. In this study, we prepare a subdaily version of BEAMS (Biosphere model integrating Eco-physiological And Mechanistic approaches using Satellite data, Sasai et al. 2016) at regional scale to estimate gross primary production (GPP), net primary production (NPP) and net ecosystem production (NEP) in Kanto plain. After calibration and validation, we supply these hourly biogenic CO₂ flux data to the atmospheric transport model AIST-MM (Kondo et al. 2001) to study CO₂ emission from Tokyo.

References :
Imasu and Tanabe, 2018, https://doi.org/10.3390/atmos9100367
Kondo et al. 2001, https://doi.org/10.2151/jmsj.79.11
Sasai et al. 2016, https://doi.org/10.1002/2015JG003157