[A-CG44] 地球惑星科学における航空機観測利用の推進

[ACG44-P05] Demonstration of greenhouse-gases flux estimation from space using an air-borne imaging spectrometer

*久世 暁彦¹、須藤 洋志¹ (1.宇宙航空研究開発機構)

キーワード：温室効果ガス、ＧＯＳＡＴ、イメージングスペクトロメータ

The Greenhouse gases Observing SATellite (GOSAT) is the first satellite program designed to monitor column averaged density of carbon dioxide (CO₂) and methane (CH₄) from space accurately and precisely. Regional flux estimation from various emission sources using GOSAT data has large uncertainty because the GOSAT footprint of 10.5km is large and number of sampling points per region is limited. The imaging spectrometer with spectral resolution of 2 angstrom and spatial resolution of 1km can enhance the column averaged density and detect plume orientation. We demonstrated greenhouse-gases flux estimation from space using air-borne imaging spectrometer suites, which consist of O₂A band, CH₄ and CO₂ band at 1.6 μm and UV-visible spectrometers.