Snow Measurements in Specific Canopy Structure Regimes for April 9, 2024, North of Coal Creek, San Juan Mountains, Colorado, USA

These data include snow depth and snow water equivalent (SWE) for a field campaign on April 9, 2024. The field area is comprised of 311 surveyed points in, on the perimeter of, and surrounding six forest openings next to Coal Creek off Coal Bank Pass in the San Juan Mountains in southwestern Colorado, USA. These measurements were taken to look at the relationship between snow accumulation and snow melt patterns between forest gaps of various sizes, and forest edges of various sizes (edge of forest gaps). Canopy metrics, including canopy height, total gap area, mean distance to canopy, canopy closure, leaf area index, non-directional edginess, canopy edginess with a southern aspect, and canopy edginess with a northern aspect were defined using aerial lidar data for the San Juan Mountains and can be found in an affiliated data release titled, ‘High Resolution Canopy Structure and Density Metrics for Southwest Colorado Derived from 2019 Aerial Lidar.’ These metrics are also included herein for the 311 surveyed points.

本数据集包含2024年4月9日野外科考活动采集的雪深与雪水当量（snow water equivalent, SWE）数据。本次野外科考的区域位于美国科罗拉多州西南部圣胡安山脉的煤岸山口旁的煤溪周边，涵盖6处林隙的内部、边界及其周边区域，共包含311个实测点位。本次实测旨在探究不同规模林隙与各类林隙边缘之间的积雪积累与融雪模式间的关联。本研究基于圣胡安山脉的机载激光雷达数据，计算得到一系列冠层指标，包括冠层高度、林隙总面积、平均冠层距离、郁闭度、叶面积指数、无方向性边缘度、南向冠层边缘度与北向冠层边缘度。上述指标可在题为《2019年机载激光雷达数据衍生的科罗拉多州西南部高分辨率冠层结构与密度指标》（High Resolution Canopy Structure and Density Metrics for Southwest Colorado Derived from 2019 Aerial Lidar）的附属数据发布文件中获取。本次数据集同时收录了上述311个实测点位对应的全部冠层指标。