On Jan 19, 4:45 pm, SpreadTooThin wrote:
1) Is there a correlation between cloud ceiling and barometric
pressure?

It wouldn't surprise me to find that FitzRoy included some sort of
attempt in his work on barometers. Though how he might define altitude
would.

2) Does any one know of any papers that discuss determining cloud
altitude from photographic images?

Not me. Sorry.