Snow density (snow pit)

Snow density is measured manually in snow pits, various places in the Zackenberg valley, during snow covered periods. In this dataset every position is given with its UTM coordinates (WGS 84, UTM Zone 27N) and with the name of the location, where measurements are conducted in the vicinity of existing plots. The densities are never sampled within the existing plots (unless otherwise stated), but in a radius of at least 10 meters from the plot, in an area in which the conditions and characteristics of the snowpack are similar to the given plot. The positions of all the locations are given here in UTM coordiantes (WGS 84, UTM Zone 27N). From 2017 the hand hardness of each layer in the snow pit is also recorded, with the five different categories: fist, 4f (four fingers), 1f (one finger), p (pencil), and k (knife).

积雪期内，研究人员于Zackenberg山谷的多处地点通过雪坑人工测量获取雪密度数据。本数据集的每个测量点位均附带通用横轴墨卡托（UTM）坐标系（WGS 84，UTM 27N带）坐标以及点位名称，所有测量工作均在现有样地周边开展。除另有说明外，雪密度采样绝不会在现有样地内部进行，而是在距离样地至少10米的范围内开展，且该区域内的积雪层条件与特征需与对应样地保持一致。所有点位的坐标均以通用横轴墨卡托坐标系（WGS 84，UTM 27N带）形式在此列出。自2017年起，数据集还同步记录雪坑各层的手测硬度，共包含5个分级类别：拳头（fist）、四指（4f，four fingers）、一指（1f，one finger）、铅笔（p）、刀具（k，knife）。