By Kate Lewis Hood 15 November 2022 Bartlett, New Hampshire, United States PhenoCam A PhenoCam image from the Bartlett Experimental Forest in New Hampshire. Image source: PhenoCam [screenshot]. Retrieved 15 November 2022, from https://phenocam.nau.edu/webcam/sites/bartlettir/ The PhenoCam Network uses digital cameras for automated, near-surface remote sensing to observe seasonal changes in the greenness of the canopy in forest ecosystems. In doing so, the project hopes to develop understandings about how phenological events influence carbon and hydrological cycles, and the impact of climate change on phenology. The network started in temperate and boreal forest ecosystems in the northeastern United States and Canada, and is led from Northern Arizona University. Conceived as a cooperative network, PhenoCam has now spread more widely and will archive and process imagery from external participants to be shared as open data.I found out about PhenoCam through the artist Martina O'Brien and her project of ephemeral measure.