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Is there any freely available database of sky pictures, which also already has an information about the cloud cover in metadata (by percentage, or by okta)? I am no meteorologist, but I want to train my program to estimate cloud cover from pictures of sky I will take. Do you think it makes any sense? Or do you think it would be better, more precise, to calculate cloud cover from image processing?

Edit: I am looking more for a database of pictures like this - allskycam.com but with the cloud cover already calculated

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Data availability has been discussed here:

Are there open historic cloud cover data files available?

I don't know if it is both IR and VIS, but they may link to published analysis methods that include ML techniques.

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  • thank you for your reply, maybe I should move this question into the opendata section... I am looking more for a database of pictures like this - allskycam.com but with the cloud cover already calculated
    – Katarina
    Commented Dec 4, 2015 at 13:15

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