Single-point CLM simulations with hillslope hydrology at Niwot Ridge, CO

In this study, we ran ecosystem-scale Community Land Model (CLM) simulations with a novel hillslope hydrology configuration to represent topographically heterogeneous alpine tundra vegetation across a moisture gradient at Niwot Ridge, Colorado, USA. We used local observations to evaluate our simulations and investigated the role of topography and aspect in mediating patterns of snow, productivity, soil moisture and temperature, as well as the potential exposure to climate change across an alpine tundra hillslope.
This dataset contains output files from single-point CLM simulations with the hillslope hydrology for the manuscript titled 'Topographic Heterogeneity and Aspect Moderate Exposure to Climate Change Across an Alpine Tundra Hillslope'. Local observations from Niwot Ridge, CO were used to force and evaluate these simulations to represent alpine tundra vegetation across a moisture gradient.
Our control simulations were modified to represent a site at Niwot Ridge referred to as the 'Saddle', with an east and west facing knoll and a lowland area between them. Three columns represent distinct moist, wet, and dry meadow vegetation communities. We used the same model setup to run additional experiments on north- and south-facing slopes. Simulations were run using input data from 2008-2021 (historical) and then extended to year 2100 (future) using an anomaly forcing protocol.

在本研究中，我们采用一种新颖的山坡水文配置，对生态系统规模的社区土地模型（Community Land Model，简称CLM）进行了模拟，以表征美国科罗拉多州尼沃特岭地区沿水分梯度分布的地形异质性高山苔原植被。我们利用局部观测数据对模拟结果进行评估，并探讨了地形和朝向在调节积雪、生产力、土壤湿度和温度模式，以及高山苔原山坡对气候变化潜在暴露度中的作用。该数据集包含了具有山坡水文配置的单点CLM模拟输出文件，对应于题为《地形异质性和朝向调节高山苔原山坡对气候变化的暴露度》的论文。利用科罗拉多州尼沃特岭的局部观测数据对这些模拟进行驱动和评估，以表征跨越水分梯度的山地苔原植被。我们的控制模拟经过修改，以表征尼沃特岭的‘鞍部’地点，该地点具有东西向的山丘和两者之间的低地区域。三个列代表不同的湿润、潮湿和干燥草甸植被群落。我们使用相同的模型设置，对北向和南向坡进行了额外的实验。模拟使用了2008-2021年（历史）的数据输入，并利用异常强迫协议将模拟扩展至2100年（未来）。