Snow cover profile 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）的多个点位开挖雪坑。沿完整雪层剖面的不同深度测定温度与雪密度，以表征全年雪层的温度及雪水当量（Snow Water Equivalent, SWE）特征。雪密度采用1000毫升采样器，以10厘米间隔进行测定。雪粒特征相关数据自1994-1995年雪季起开始采集。