>>We have a measure of
plant photosynthesis activity in combination with the carbon dioxide. When plants are doing photosynthesis, they emit a little bit of light, and we can sense that
light in our measurements.>>OCO-3 is gonna be measuring this emission called fluorescence, and that’s gonna give us insight into planetary photosynthesis and the underlying drivers of really why is CO2 changing over time, and this would give us
more insight into why plants use CO2 for growing. The combination of these measurements tell us about the relationship between this net uptake of CO2 over time and how that is being
governed by photosynthesis.