Question

How does OCO-3 measure carbon dioxide across the globe?

A) Utilizing ground-based sensors exclusively
B) Using satellite-based observations
C) Employing underwater probes
D) Utilizing weather balloons

Answer 1

OCO-3 measures global carbon dioxide levels using satellite-based observations by detecting CO2's infrared signatures.

Step-by-step explanation:

OCO-3, or the Orbiting Carbon Observatory-3, measures carbon dioxide concentrations across the globe using B) satellite-based observations. This sophisticated instrument is attached to the International Space Station and utilizes high-resolution spectrometers to detect the unique infrared signatures of carbon dioxide. By observing the sunlight reflected off the Earth's surface, OCO-3 can accurately measure CO2 levels and map them across the planet to study changes in atmospheric composition over time.