Snowpack_Snodgrass Elevation transect_Winters (2021-22, 2022-23)_AS.csv

The data set “Snowpack_Snodgrass_AS.csv” consists of the snowpack data measured by the PhenoCams at each site up Snodgrass Mtn, Crested Butte, Co. To calculate snow depth each fall, we placed a 3-meter PVC pipe in the ground in the field of view of the PhenoCam. We spray painted 25 cm alternating increments of red and white, with each meter labeled with a black stripe. Using the downloaded PhenoCam images, a calibration curve of pole height to pixels was calculated. The amount of non-snow-covered pole pixels for each image was quantified, and the snow depth was calculated using the calibration curve. Sites are abbreviated versions of site names and phenocam numbers, i.e., hc7= high_conifer_Snodgrass_7.

数据集"Snowpack_Snodgrass_AS.csv"收录了科罗拉多州克雷斯特德比特斯诺格拉斯山各观测站点由物候相机（PhenoCams）采集的积雪数据。为计算每年秋季的积雪深度，我们在物候相机视场范围内的地面埋设了一根3米长的聚氯乙烯（PVC）管，并按25厘米间隔交替喷涂红、白两色漆料，同时以黑色条纹标记每1米的高度刻度。通过下载的物候相机影像，我们构建了立杆高度与像素数之间的校准曲线。对每张影像中未被积雪覆盖的立杆像素数目进行量化统计后，即可通过该校准曲线计算得到积雪深度。站点名称为原站点名称与物候相机编号的缩写组合，例如hc7即对应high_conifer_Snodgrass_7。