Fig. 6

Internal heat energy per unit surface area (1), temperature in 3 m depth (2), temperature in 25 m depth (3), onset of summer stagnation (4), end of summer stagnation (5), and day of ice-off (6) for all four scenarios and all three reservoirs. The individual boxplots represent annual averages of 16 years. The scenarios annotated with an asterisk indicate the reference scenario for the respective reservoirs. For description of the reservoirs see Table 1, for description of the strategies see Section Management strategies