[A-CG41] 航空機・無人機観測による地球惑星科学の推進

[ACG41-01] シベリア上空における大気中温室効果ガスの航空機モニタリング

★招待講演

*町田 敏暢¹、笹川 基樹¹、Arshinov Mikhail²、Mitin Sergey³、Maximov Trofim⁴ (1.国立環境研究所、2.Institute of Atmospheric Optics、3.Institute of Microbiology、4.Institute for Biological Problems of Cryolithozone)

キーワード：温室効果ガス、チャーター航空機、鉛直分布、シベリア、長期モニタリング

Siberian region plays an important role for atmospheric greenhouse gases such by photosynthesis and respiration in forest, CH4 emission from wetland, leakage of natural gas from gas/oil production facilities, and forest fires. To understand the temporal changes and spatial distributions of fluxes for greenhouse gases in Siberia, aircraft campaign had been conducted both over West and East Siberia in summer 1992-1994. Routine flask samplings have been carried out over 2 sites in West Siberia and one site in East Siberia using chartered aircrafts since 1993. The sample airs are brought back to Japan and mixing ratios of greenhouse gases and their isotope ratios are analyzed. We will present a long-term history of aircraft monitoring under tight collaborations between Russian and Japanese institutes.