[M-SD40] Future Missions of Satellite Earth Observation

[MSD40-P07] Development and Evaluation of a Coupled Water Cycle Monitoring System Using Satellite Observation

*Kazuyoshi Suzuki¹, Misako Kachi², Jun Asanuma³, Kazuyuki Saito¹, Hideki Kobayashi¹, Milija Zupanski⁴, Tetsuya Hiyama⁵ (1.Japan Agency for Marine-Earth Science and Technology, 2.JAXA, 3.Univ. Tsukuba, 4.Colorado State Univ., 5.Nagoya Univ. )

Keywords:coupled data assimilation, atmospheric-land surface interaction, Climate Model, Disaster Prevention and Mitigation

Changes in the hydrological cycle due to global warming are causing floods, droughts, and other problems in various parts of the world, with significant impacts on the local environment and ecosystems. In order to assess the impact of these changes on the water cycle and water resources, it is necessary to establish a water cycle monitoring system that integrates the atmosphere and land. The objective of this study is to construct a global water cycle monitoring system that integrates atmospheric and terrestrial water cycles and to create a coupled atmosphere-land water cycle data set. A unique feature of this study is that we focus on the water storage term, which is an important part of the water cycle, and evaluate the atmospheric precipitable water and land water storage associated with global warming in a consistent manner from regional to global scales. In order to achieve the above objectives, satellite and meteorological data (JAXA/AMSR2/3, NCEP/PREPBUFR, etc.) are obtained and organized in quasi-real time on a global basis, and a global coupled atmosphere/land surface climate model is used. In order to evaluate the accuracy of the reanalyzed data, we will collect validation data in the regions where the water cycle changes are remarkable due to recent global warming, and verify the accuracy of the water cycle data and understand the actual situation. Through this research, we will create and release regional to global water cycle data sets, elucidate the link between atmospheric and terrestrial water cycles, and contribute to global disaster prevention and mitigation measures.