Time-lapse camera (phenocam) imagery of sensor network plots, 2017 - ongoing.

Images from time-lapse cameras were analyzed to track the greenness
curves of 16 plots in the Sensor Network at Niwot Ridge. Images were
taken every 30 minutes during daylight hours throughout the growing
season. Cameras were angled to view 1m^2 vegetation plots located at
each sensor node. Pixels in the portion of the image capturing the
vegetation plot were used to calculate the green chromatic
coordinate (GCC). The change in GCC over the growing season
represents the growth and phenology of the plant communities
captured.