Dataset: Natural Weathering of Norway Spruce Across Europe — Round Robin Colour Measurements

This dataset contains the full set of colour measurements and associated metadata from a coordinated Round Robin natural‑weathering experiment on Norway spruce (Picea abies). Identically prepared samples from a single log were exposed for 12 months at 22 European locations representing diverse climatic conditions.本数据集包含针对欧洲云杉（Picea abies，Norway spruce）开展的协同循环比对（Round Robin）自然老化实验的全套色度测量数据及相关元数据。取自同一原木的标准化制备试样，在代表多样气候条件的22个欧洲地点完成了为期12个月的户外暴露试验。