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“Outdoor days” are defined as the number of days with moderate temperature, neither too cold nor too hot, that allows most people to enjoy outdoor activities, like walking, jogging, running, cycling, and more broadly enjoy travel and tourism. The results are derived from 30 CMIP6 models under the SSP1-2.6 and SSP5-8.5 scenarios.
- SSP1-2.6 scenario assumes that the development of renewable energy technology minimizes the use of fossil fuels (CO2 Concentration of 432 ppm in 2100), leading to environmentally sustainable economic growth.
- SSP5-8.5 scenario assumes the high use of fossil fuels (CO2 Concentration of 1089 ppm in 2100) and the indiscriminate development of cities, with a focus on rapid industrial technological advancements.
More detailed information on the models used is provided at https://doi.org/10.1175/JCLI-D-23-0346.1
