Lake climate change scenarios CH2018

The dataset "Lake_climate_change_scenarios_CH2018" provides simulation-based climate change impact scenarios for perialpine lakes in Switzerland. These transient future scenarios were produced by combining the hydrologic model PREVAH with the hydrodynamic model MIKE11 to simulate daily lake water level (Lake_water_level_scenarios_CH2018.xls) and outflow scenarios (Lake_outflow_scenarios_CH2018.xls) from 1981 to 2099, using the Swiss Climate Change Scenarios CH2018. The future scenarios contain a total of 39 model members for three Representative Concentration Pathways, RCP2.6 (concerted mitigation efforts), RCP4.5 (limited climate mitigation) and RCP8.5 (no climate mitigation measures). These scenarios result from the study titled "Lower summer lake levels in regulated perialpine lakes, caused by climate change," authored by Wechsler et al. in 2023. The dataset emphasizes four specific Swiss lakes, each subject to different degrees of lake level management: an unregulated lake (Lake Walen), a semi-regulated lake (Lake Brienz), and two regulated lakes (Lake Zurich and Lake Thun). In addition, the file (Lake_characteristics.xlsx) includes data used in the modeling process, encompassing the stage-area relation for the four lakes, stage-discharge relations for the unregulated and semi-regulated lakes, and lake level management rules for the two regulated lakes.

数据集"Lake_climate_change_scenarios_CH2018"提供了瑞士阿尔卑斯山前湖泊（perialpine lakes）基于模拟的气候变化影响情景。该类瞬态未来情景通过将水文模型PREVAH与水动力模型MIKE11耦合构建，依托瑞士气候变化情景CH2018，模拟了1981年至2099年的逐日湖泊水位（文件Lake_water_level_scenarios_CH2018.xls）与出流情景（文件Lake_outflow_scenarios_CH2018.xls）。

该未来情景涵盖三类典型浓度路径（Representative Concentration Pathways，RCP）下共计39个模型成员，分别为RCP2.6（协同减排情景）、RCP4.5（有限气候减排情景）以及RCP8.5（无气候减排措施情景）。上述情景源自Wechsler等人2023年发表的题为《气候变化导致受调控阿尔卑斯山前湖泊夏季水位降低》的研究。

本数据集聚焦四座特定的瑞士湖泊，各湖泊的水位管理程度各不相同：一座未受调控湖泊（瓦伦湖Lake Walen）、一座半调控湖泊（布里恩茨湖Lake Brienz），以及两座受调控湖泊（苏黎世湖与图恩湖）。

此外，文件Lake_characteristics.xlsx包含建模过程中使用的配套数据，涵盖四座湖泊的水位-面积关系、未调控与半调控湖泊的水位-流量关系，以及两座受调控湖泊的水位管理规则。