[A-CG41] Aircraft and UAV Observations for Earth-planetary sciences

[ACG41-01] Aircraft monitoring for atmospheric greenhouse gases over Siberia

★Invited Papers

*Toshinobu Machida¹, Motoki Sasakawa¹, Mikhail Arshinov², Sergey Mitin³, Trofim Maximov⁴ (1.National Institute for Environmental Studies, 2.Institute of Atmospheric Optics, 3.Institute of Microbiology, 4.Institute for Biological Problems of Cryolithozone)

Keywords:greenhouse gas, chartered aircraft, vertical distribution, Siberia, long-term monitoring

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.