Phenology: Green-Down Protocol. Why do GLOBE scientists research ... Step 1: Select 'Define a Green-Up/Green-Down Study Site' from the Phenology data entry menu ...
Introduction to Phenology What is Phenology? What Causes Seasons? The Keeling Curve Concentration of CO2 at Mauna Loa, Hawaii Satellite Observations Phenology ...
... as air and soil temperature, soil moisture, and day length affect plant growth ... Green-down marks the end of the growing season for many plants. ...