Table 1.
The population and climate of summer (JJA) in study cities.
| Group | Period | Seoul | Incheon | Gwangju | Daegu |
|---|---|---|---|---|---|
| Population(million) | 1999–2018 | 9.77 | 2.96 | 1.46 | 2.46 |
| Elderly (%) | 1999–2008 | 6.5 | 5.9 | 6.5 | 7.0 |
| 2009–2018 | 11.3 | 9.4 | 10.4 | 11.6 | |
| Low-income (%) | 2009–2018 | 2.4 | 2.9 | 4.9 | 4.3 |
| Single-person (%) | 2010–2018 | 10.5 | 8.1 | 10.4 | 9.3 |
| Average of Tmax (°C) | 1999–2008 | 28.5 | 27.8 | 29.2 | 29.7 |
| 2009–2018 | 29.5 | 27.6 | 30.4 | 30.9 | |
| Average of Rh (%) | 1999–2018 | 72.1 | 77.9 | 74.8 | 69.7 |
| 2009–2018 | 69.2 | 82.7 | 76.6 | 67.8 |
*Tmax: maximum temperature; Rh: relative humidity.
**Source of data: Statistics Korea32.