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How accurately can the satellite measure greenhouse gases from space?

How accurately can the satellite measure greenhouse gases from space?

Gases absorb light at specific wavelengths, creating a “spectral fingerprint” for each gas. Our satellite finds the fingerprints using sunlight, and measures the brightness of those fingerprints to determine how much of each gas is present in the view of the satellite. Claire measures the gas fingerprints of carbon dioxide and methane, which are the two most significant greenhouse gases.

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