FACE-MDS Phase 2: Data from Six US-Located Elevated CO2 Experiments

Measured ecosystem data from five Free Air CO2 Enrichment (FACE) experiments -- Duke, Nevada Desert (NDFF), Oak Ridge (ORNL), Prairie Heating and CO2 Experiment in Wyoming (PHACE), and Rhinelander -- and one Open Top Chamber (OTC) experiment -- Kennedy Space Center. These six sites were the study sites of the FACE Model Data Synthesis (FACE-MDS) project phase 2. File naming convention can be found in the file 'facemds-file-table-sitedata.xml' and information about variable naming convention can be found in the file 'facemds-standard-name-table-modvars.xml'. We followed the ALMA v3 convention for meteorological variables and developed a hierarchical naming scheme for ecosystem variables. Additional info can be found in the protocols in the accompanying meteorological dataset (doi:10.15485/1480328). We replaced the original naming convention mentioned in the protocol with the one described in 'facemds-standard-name-table-modvars.xml'. Updated: 28th June 2019 --- daily files at Duke and ORNL were incorrectly labelled and were standard error files instead of plot level data. Now corrected and all three (plot, mean, sem) daily data files for both sites have been added.本数据集包含来自5项自由空气CO₂富集（Free Air CO₂ Enrichment, FACE）实验以及1项开顶箱（Open Top Chamber, OTC）实验的实测生态系统数据：其中FACE实验站点分别为杜克（Duke）、内华达荒漠（Nevada Desert, NDFF）、橡树岭（Oak Ridge, ORNL）、怀俄明州草原增温与CO₂富集实验（Prairie Heating and CO₂ Experiment in Wyoming, PHACE）以及莱茵兰德尔（Rhinelander），OTC实验站点为肯尼迪航天中心（Kennedy Space Center）。上述6个站点均为FACE模型数据合成（FACE Model Data Synthesis, FACE-MDS）二期项目的研究站点。文件命名规范可查阅文件"facemds-file-table-sitedata.xml"，变量命名规范相关信息可查阅文件"facemds-standard-name-table-modvars.xml"。本数据集的气象变量遵循ALMA v3规范，生态系统变量则采用自主构建的层级命名体系。更多详细信息可查阅配套气象数据集的相关方案（DOI:10.15485/1480328）。我们已将原方案中提及的命名规范替换为"facemds-standard-name-table-modvars.xml"中定义的规范。更新说明：2019年6月28日——杜克与橡树岭站点的日数据文件曾存在标签错误，原文件为标准误差文件而非样地水平数据；现已完成修正，补充了两个站点全部三类（样地、均值、标准误）的日数据文件。