Annual snow survey, Green Lakes Valley, Niwot Ridge, Colorado, 2013 - ongoing.
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https://portal.edirepository.org/nis/mapbrowse?packageid=knb-lter-nwt.929.5
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资源简介：
Yearly snow surveys were conducted in the Green Lakes Valley in the City of Boulder Watershed at the estimated peak of snowpack in late spring. Over a period of several days, surveying teams (1 to several people) traversed valley slopes measuring snow depth with avalanche probes. Locations of each depth measurement were recorded as waypoints in Garmin hand-held GPS units. Snow depths were recorded on standardized field sheets along with dates, recorder names, waypoint numbers, and comments.
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Environmental Data Initiative
