[A-CG39] Science in the Arctic Region

[ACG39-07] Research progresses of PAWCs (Pan-Arctic Water-Carbon Cycles) focusing on water-carbon cycles in northern Eurasia

★Invited Papers

*Tetsuya Hiyama¹, Hotaek Park², Tomonori Sato³, Hiroki Mizuochi⁴, Akihiko Ito⁵, Kazuhito Ichii⁶, Yoshihiro Iijima⁷ (1.Institute for Space-Earth Environmental Research, Nagoya University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Graduate School of Environmental Science, Hokkaido University, 4.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 5.Center for Global Environmental Research, National Institute for Environmental Studies, 6.Center for Environmental Remote Sensing, Chiba University, 7.Graduate School of Bioresources, Mie University)

Keywords:atmospheric water cycle, terrestrial water cycle, greenhouse gas flux

Research progresses of PAWCs (Pan-Arctic Water-Carbon Cycles) will be introduced. The purpose of PAWCs is to integrate atmospheric- terrestrial water and carbon cycles across atmosphere – biosphere – hydrosphere – cryosphere in the region. To achieve this goal, we are developing a water traceable integrated model (WTIM), which can calculate spatiotemporal variations in the atmospheric moisture transport, moisture flux convergence, precipitation, vegetation condition, permafrost degradation, and river discharge, with important boundary conditions of the Arctic sea ice extent. We also estimate spatiotemporal variations of water-covered area and vegetation condition in northern Eurasia, using satellite remote sensing data and WTIM products with the help of spatiotemporal data fusion technics. The water-covered (inundation) map will be used for improvement of the estimation of methane emission from wetlands.