Federal sampler data for Black Sand experimental plots, 2018

This project is part of the Black Sand experiment to monitor effects
of early snowmelt at Niwot Ridge. At each of five sites (Lefty,
Soddie, Trough, East Knoll and Audubon) two 2x2 m plots were set up
and two 3x3m plots were set up, with one of each size plot receiving
600 g/m2 black sand and one receiving 800 g/m2 of black sand. This
portion of the black sand experiment was to look at snow depth and SWE
using a federal sampler at each of the plots in 2018. We use an
aluminum Standard Federal Snow Sampler to measure snow depth and snow
water equivalent (SWE). This device, compared to traditional snow pit
techniques, provides efficient measurement capabilities that are less
disruptive to the snowpack. Manual Federal Sampler measurements
provide high accuracy point data to determine the amount of water in
the surrounding snowpack. With a high downstream reliance on water
within the regional snowpack, our weekly measurements give a time
series of SWE throughout the winter season, offering consistent and
dependable information for water resource planning and preparation.

本项目隶属于黑沙实验（Black Sand experiment），旨在监测尼沃特岭（Niwot Ridge）的早期融雪效应。在Lefty、Soddie、Trough、East Knoll及Audubon共5个样地中，各布设2块2m×2m样地与2块3m×3m样地；每类尺寸的样地中，1块施加600 g/m²黑沙，剩余1块施加800 g/m²黑沙。本次黑沙实验的该分支研究于2018年开展，针对所有样地，采用铝制标准联邦积雪采样器（Standard Federal Snow Sampler）测量雪深与雪水当量（Snow Water Equivalent，SWE）。相较于传统雪坑观测技术，该设备可实现高效测量且对积雪层的干扰程度更低。手动联邦积雪采样器可获取高精度的点位数据，用于确定周边积雪层的含水量。鉴于该区域积雪融水为下游地区的重要水源支撑，我们每周开展的测量可获取整个冬季的雪水当量时间序列，为水资源规划与筹备工作提供稳定可靠的参考依据。