Abstract
In this study, the pseudo global warming experiment of Typhoon Hagibis (2019) was conducted to investigate the impact of global warming on the development and weakening of the typhoon. The air temperature, geopotential height and sea surface temperature for the future climate condition were set by adding the global warming components of these meteorological elements to the NCEP FNL. The global warming components of the air temperature, geopotential height and sea surface temperature were calculated from the differences of October monthly mean values between in the 2010s and 2090s, which were predicted by MRI-CGCM3 under the RCP8.5 scenario. Under the future climate condition, the typhoon maintained its intensity up to higher latitudes than under the current climate condition, and the typhoon intensity at the landfall latitude increased significantly. The reason for the maintained increase in the typhoon intensity was that the rising of the air temperature and sea surface temperature due to global warming increased the amount of water vapor in the lower atmosphere at higher latitudes and made the atmospheric condition unstable.
