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John Fairweather has a question...

For personal study, I am trying to find (if there is one) a library (database) of Earth's (molecular) spectra, as taken from space – I thought I saw a URL link to one a few months ago , but I can't find the reference. This database would be useful, for comparing spectra from exoplanets to that of the Earth.

There's nothing quite like remebering something  in general but not quite in detail! Please would anyone with an answer or some helpful pointers towards one, get in touch with John, or send a message to the page editor.