[A-CG31] Aircraft and UAV Observations for Earth-planetary sciences

[ACG31-03] Remote Sensing of Atmospheric Composition using Commercial Flights between Tokyo-Haneda and Fukuoka-city

*Akihiko Kuze¹, hiroshi Suto¹, Seiya Kosaki¹, Kei Shiomi¹, Ayako Matsumoto², YaYasuhiro Tubakihara², Fumie Kataoka³, Tetsuya Kaku³, Shigetaka Mori⁴ (1.Japan Aerospace Exploration Agency, 2.ANA HD, 3.RESTEC, 4.JASTECS)

Keywords:CO2, NO2, commercial flight, imaging spectrometer , greenhouse gases

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.