Masayuki Takigawa

TL;DR: The TransCom continuous experiment as mentioned in this paper was designed to evaluate the performance of forward transport model simulations at hourly, daily, and synoptic timescales, and focus on the latter two in this paper.

TL;DR: The maximum 137C concentrations at the north drain outlet of the plant and at 30 km off Fukushima were 68,000 Bq L−1 (on 30 March: TEPCO, 2011a) and 186 BqL−1(on 15 April: MEXT, 2011), respectively.

TL;DR: A forward atmospheric transport modeling experiment has been coordinated by the TransCom group to investigate synoptic and diurnal variations in CO2 in 2000-2003 as discussed by the authors, and the results have been analyzed for diurnal changes and are compared with observed CO2.

TL;DR: In this article, the authors developed an advanced chemical data assimilation system to combine observations of chemical compounds from multiple satellites, which simultaneously optimized the chemical species, as well as the emissions of O3 precursors, while taking their chemical feedbacks into account.

TL;DR: The findings suggest that top-down emission estimates of reactive species such as nitrogen oxides in key emitting countries in the NH that are based on a NH/SH OH ratio larger than 1 may be overestimated.