Thermal stress in Tokyo and Sapporo during the 2020 Olympics period

抄録

The first aim of this study is to show the simple method for analyzing the thermal comfort. We calculated wet-bulb globe temperature (WBGT) and universal thermal climate index (UTCI) from meteorological data of AMeDAS. Globe temperature (𝑇_𝑔) and was calculated and natural wet-bulb temperature was used in the WBGT calculation. The second aim of this study is to analyze the effect of the relocation of the venue of marathon and race walking from Tokyo to Sapporo and to compare the thermal condition. In Sapporo, WBGT was about 4.4 ℃ lower, and UTCI was about 6.3 ℃lower than in Tokyo on average. The total days that exceeded 28 ℃ of WBGT was 37 days that exceeded 38 ℃ of UTCI was 25 days in Sapporo. The heat stress of marathon and race walking in Sapporo was considered to be lower.