Landscape evolution modeling constrains the detectability of climate-driven erosion signals in cosmogenic nuclide records

This dataset accompanies the paper published in JGR: Earth Surface that carries the same title ("Landscape evolution modeling constrains the detectability of climate-driven erosion signals in cosmogenic nuclide records"). It contains simulation outputs from the Lagrangian landscape evolution model Cidre, used to track ¹⁰Be, ²⁶Al, ¹⁴C, and ²¹Ne concentrations in individual quartz grains transported through synthetic catchments subjected to Milankovitch-scale precipitation forcing. The archive covers the full simulation suite reported in the paper: two uplift rates (10 and 100 mm ka⁻¹), four forcing periods (23, 41, 100, and 400 kyr), three catchment sizes (100, 625, and 2500 km²) alongside point-source simulations, sinusoidal and abrupt (stepwise) precipitation forcing, and runs with and without lateral channel erosion, plus steady-state reference simulations at each uplift rate. The data underlie all main-text figures (Figs. 2–8) and Supporting Information figures (S1–S3). Each simulation produced by the Cidre landscape evolution model outputs a tab-delimited time-series file named <gridsize>_<amplitude>_denud.txt. The file contains one line per 1 kyr window over 4 Myr of transient forcing (4001 rows, 19 columns), reporting basin-averaged model diagnostics and cosmogenic-nuclide (CN) output for individual quartz grains exported at the catchment outlet. Columns (in order): Time (yr); imposed denudation rate; mean elevation; mean slope; number of internally-drained lakes; number of hillslope collapses; mean regolith production rate; mean runoff; mean sediment thickness; apparent denudation rates derived from ¹⁰Be, ²⁶Al, ¹⁴C, and ²¹Ne concentrations in exported grains; number of grains exported during the window; mean rainfall; mean CN concentrations (¹⁰Be, ²⁶Al, ¹⁴C, ²¹Ne) in exported grains. Filename convention (all folders): <size>_<amplitude>_denud.txt, where <size> is grid side length in pixels (100 = 100 km², 250 = 625 km², 500 = 2500 km²; 10 = 3×3 pixel point-source simulation with no landscape) and <amplitude> is the peak-to-peak precipitation change relative to the long-term mean, in percent.本数据集配套发表于《地球物理研究杂志：地表》（JGR: Earth Surface）的同名论文，论文标题为《景观演化模型约束宇宙成因核素记录中气候驱动侵蚀信号的可探测性》。 本数据集包含拉格朗日景观演化模型Cidre的模拟结果，该模型用于追踪经合成流域搬运的单个石英颗粒中的¹⁰Be、²⁶Al、¹⁴C及²¹Ne等宇宙成因核素（cosmogenic nuclide）浓度，模拟受米兰科维奇尺度降水强迫驱动。 本数据集涵盖论文中报告的全部模拟方案：两种抬升速率（10与100 mm ka⁻¹）、四种强迫周期（23、41、100及400 kyr）、三种流域规模（100、625及2500 km²），同时包含点源模拟、正弦型与突变（阶跃型）降水强迫试验、有无侧向河道侵蚀的模拟，以及各抬升速率下的稳态参考模拟。 本数据集支撑论文全部正文图（图2至图8）及补充材料图（S1至S3）。 Cidre景观演化模型生成的每项模拟均输出一个制表符分隔的时间序列文件，命名格式为<gridsize>_<amplitude>_denud.txt。该文件包含4百万年（Myr）瞬态强迫过程中每1千年（kyr）窗口的一行数据（共4001行、19列），记录流域平均模型诊断结果及流域出口处输出的单个石英颗粒的宇宙成因核素（CN）输出参数。 列项（按顺序）：时间（年）；施加的剥蚀速率；平均海拔；平均坡度；内流湖数量；山坡崩塌次数；平均风化层生成速率；平均径流量；平均沉积物厚度；由出口颗粒中¹⁰Be、²⁶Al、¹⁴C及²¹Ne浓度推导得到的表观剥蚀速率；窗口时段内输出的颗粒数量；平均降雨量；出口颗粒的平均CN浓度（¹⁰Be、²⁶Al、¹⁴C、²¹Ne）。 文件名命名规则（所有文件夹）：<size>_<amplitude>_denud.txt，其中<size>为以像素为单位的网格边长（100对应100 km²、250对应625 km²、500对应2500 km²；10代表无地表的3×3像素点源模拟），<amplitude>为相对于长期平均值的峰-峰降水变化幅度，单位为百分比。