Quote:
Originally Posted by CraigS
Hi Peter;
Yes … I would have thought they'd be compensating for this in the processing of the spectroscopic readings .. which I guess, would give rise to the ambiguity she's referring to.
(I should've also referred to her reference about the space-based scope readings).
I'm more surprised that the space based scopes aren't set up to detect CO2, either! You'd think this would be handy for exoplanet research.
Guess I learn something new everyday !!
Cheers
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NASA are using diffuse reflectance IR fourier transform spectroscopy (DRIFT). Water vapor and CO2 strongly absorb strongly in IR. It's a standard procedure to subtract the effects of water vapour and CO2 for earth based IR spectrometers.
Regards
Steven