NACP Site: Terrestrial Biosphere Model Output Data in Original Format

This data set contains the original model output data submissions from the 24 terrestrial biosphere models (TBM) that participated in the North American Carbon Program (NACP) Site-Level Synthesis. The model teams generated estimates for, but not limited to, a minimum of six variables, including gross primary productivity (GPP), net ecosystem exchange (NEE), leaf area index (LAI), ecosystem respiration (Re), latent heat flux (LE), and sensible heat flux (H) for each of 47 selected eddy covariance flux tower sites across North America. Participating modeling teams followed the NACP Site Synthesis Protocol (site_synthesis_protocol_v7.pdf), which covers procedures, plans, and infrastructure for the site-level analyses. File format and units conversions of several data submissions were made by the MAST-DC to produce NetCDF files of consistent content and structure for all 24 TBM outputs. The model outputs are structured as described in Appendix A: Model Output Variables, of the Site Synthesis Protocol.

In addition, MAST-DC processed these original model submissions to derive uniquely processed and formatted data files for model inter-comparison and evaluation (NACP Site: Terrestrial Biosphere Model and Aggregated Flux Data in Standard Format). This related data set provides GPP, NEE, LAI, Re, LE, and sensible heat (H) model output variables at the native half-hourly time step, and in daily, monthly, and annual aggregations. The related data set also contains gap-filled observations and total uncertainty estimates at the same time steps.
There are 24 compressed (*.zip) files with this data set -- one file for each model. When expanded, the .zip files contain model output data files for flux tower sites in NetCDF and some in text formats.

本数据集包含参与北美碳计划（North American Carbon Program, NACP）站点级综合研究的24个陆地生物圈模型（Terrestrial Biosphere Model, TBM）的原始模型输出数据提交结果。参与建模的团队针对北美地区选定的47座涡度协方差通量塔站点，估算了至少6类变量，涵盖总初级生产力（gross primary productivity, GPP）、生态系统净交换（net ecosystem exchange, NEE）、叶面积指数（leaf area index, LAI）、生态系统呼吸（ecosystem respiration, Re）、潜热通量（latent heat flux, LE）与感热通量（sensible heat flux, H），且不限于上述变量。所有参与建模团队均遵循了《NACP站点综合研究规程》（site_synthesis_protocol_v7.pdf），该规程涵盖了站点级分析的流程、方案与基础设施。MAST-DC对多份提交的数据开展了文件格式与单位转换工作，最终生成了内容与结构统一的NetCDF文件，覆盖全部24个TBM模型的输出结果。模型输出的结构遵循《NACP站点综合研究规程》附录A：模型输出变量中的相关规定。
此外，MAST-DC还对上述原始模型提交数据进行处理，生成了专用于模型间比较与评估的标准化处理与格式化数据文件（对应数据集：NACP站点：陆地生物圈模型与标准格式聚合通量数据）。该关联数据集提供了原生半小时时间步长下的GPP、NEE、LAI、Re、LE与感热（H）模型输出变量，并包含日、月、年尺度的聚合数据；同时还包含相同时间步长下的间隙填充观测数据与总不确定性估算结果。
本数据集共包含24个压缩（*.zip）文件，每个文件对应一个模型。解压后，这些*.zip文件将包含各通量塔站点的模型输出数据文件，其中多数采用NetCDF格式，部分采用文本格式。