[A-CG31] 航空機・無人機観測による地球惑星科学の推進

[ACG31-03] 羽田－福岡便による大気成分の遠隔分光観測

*久世 暁彦¹、須藤 洋志¹、鉱崎 誠哉¹、塩見 慶¹、松本 紋子²、椿原 康宏²、片岡 文恵³、郭 哲也³、森 重隆⁴ (1.宇宙航空研究開発機構、2.ANAホールティングス株式会社、3.リモートセンシング技術センター、4.ジャスティックス)

キーワード：二酸化炭素、二酸化窒素、民間定期便、イメージング分光計、温室効果ガス

Local flux estimations using existing satellite data such as GOSAT include large uncertainties due to too large footprint, lack of proper upwind reference observation, and lack of wind information. To contribute to the global stocktake of the Paris Agreement, we need an observation system to estimate local flux from individual source sectors. We have developed imaging spectrometer suites with optimized spectral resolution and coverage for air borne observations. They which consist of oxygen (O₂) A band, methane (CH₄) and carbon dioxide (CO₂) bands at 1.6 μm and UV-visible spectrometers. We flew between Tokyo Haneda and Fukuoka-City. The flight route covers mega cities such as Nagoya, Osaka, Kobe, Okayama, Hiroshima, Kita-Kyusyu and industry areas. Since October 2020, we have acquired imaging data of O_2, CO₂, CH₄ and nitrogen dioxide (NO₂). The NO₂ image can identify point sources such as power plants and steel plants with plume. These information will improve the CO₂ local emission estimation from individual source sectors.