OCO blog by Eric Ianson, program executive for the project. (Kind of like the producer for a film -- he is "responsible for tracking the mission’s cost, schedule, and performance against NASA established requirements. But in a broader sense, I am an advocate, advisor, sounding board, liaison, counselor, "gofer", secretary, etc."
"Oco will collect about 8 million measurements every 16 days for at least two years. It will use three high-resolution spectrometers to split light into its various constituent colours. By anlaysing this light to detect the unique signature of gases such as carbon dioxide and oxygen in the atmosphere, scientists will be able to determine their relative concentrations and identify sources and sinks of CO2."
The other news brief didn't even give the full name of the satellite! (It's the Orbiting Carbon Observatory, or Oco.)
Cool! Tomorrow NASA is launching satellite whose job is to monitor CO2. The big omission in the article, though, is HOW exactly it will take CO2 measurements of the Earth's atmosphere from outside of it. I'm...very curious. Maybe some kind of spectroscopy? Anyone? Anyone?