Snow water equivalent data for Niwot Ridge and Green Lakes Valley, 1993 - ongoing.

Snow pits were excavated at various locations on Niwot Ridge and within the Green Lakes Valley. Temperature and snow density were measured at various depths throughout the snow cover profiles to characterize the temperature and snow water equivalent (SWE) of the snowpack throughout the year. Snow density was measured at 10-cm intervals using a 1000-ml cutter. Data on snow grain qualities were collected beginning in the 1994-95 snow season.

研究团队在尼沃特岭（Niwot Ridge）与绿湖谷（Green Lakes Valley）的多个采样点位开挖雪坑。沿积雪剖面的各深度层级测定温度与雪密度，以表征全年积雪的温度及雪水当量（snow water equivalent, SWE）特征。雪密度采用1000毫升取样器，以每10厘米的间隔完成测定。自1994-1995年雪季起，开始收集雪粒性状相关数据。