2023 Volume 79 Issue 17 Article ID: 23-17168
The intensity characteristics of typhoons under special conditions were evaluated using an original climate experiment based on a model combining a slab ocean model with a global atmospheric climate model (MRI-AGCM) from the Meteorological Research Institute of the Japan Meteorological Agency. Seventy years of September average SSTs were analyzed, and cluster analysis was performed to compare the results with climate experiments as average September conditions. Climate experiments were also conducted and compared. In addition, a month-fixed EA experiment was conducted under present and future climate conditions (ssp585 scenario). The statistical characteristics of typhoons under the September 2018 condition, when Jebi caused extensive damage to the Kansai region, confirmed that many strong typhoons approached or landed in Japan, even considering natural variability. In addition, a trend of increase in the number of strong typhoons was obtained as a change in the intensity characteristics of typhoons by climate change.
