Observer Events

A landscape of forested hills showing autumn color changes from green to reds and oranges.

North America Phenology Campaign

Date: 2026-08-19 - 2026-12-31

Take landscape photos for NASA's PACE mission

Volunteer observations will help verify PACE vegetation color indices to support the refinement of a novel data product. Learn more about how PACE is tracking leaf color change in this video: "Leaf Peeping with PACE" (1:25) 

Gather your materials

 

Collect and Enter your data

  • Choose a location where you can see the forest landscape. Use the Land Cover tool in the GLOBE Observer app to take photos in each cardinal direction, up, down, and also take a "Feature Photo" of the landscape.

Leaf color changes rapidly and regular repeat observations are appreciated! 

More information and additional resources can be found on the North American Phenology Campaign page.


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