Just arrived in Luxembourg from City. Flew mostly between two cloud layers. Couldn't help wondering how/why the undercast sported quite a few fissures through which I sometimes fancied the ground could be seen.
Does anyone know what might explain these? The terrain below maybe? Or, maybe other cloud-busting aircraft? Both seem unlikely to me.
Thanks,
Chris
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Undercasts and their non-uniformities
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Direct questions and answers, this room is not for general discussion please
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- Lemon Quarter
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- Lemon Half
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Re: Undercasts and their non-uniformities
Probably two decaying fronts, with three air masses involved. Maybe an old warm sector below, then a cold sector then another warm sector above with its own warm front giving rise to the upper cloud.
You would need to have a look at the synoptic chart for the day involved.
TJH
You would need to have a look at the synoptic chart for the day involved.
TJH
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- Lemon Quarter
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Re: Undercasts and their non-uniformities
Thanks Terry. Should have taken a photo. These things looked like the cloud was made of earthenware that had been glued together after shattering into, say, five pieces. C.
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- Lemon Half
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Re: Undercasts and their non-uniformities
csearle wrote:Thanks Terry. Should have taken a photo. These things looked like the cloud was made of earthenware that had been glued together after shattering into, say, five pieces. C.
Might have been a mackerel sky, altocumulus, if that was the upper layer.
TJH
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- Lemon Quarter
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Re: Undercasts and their non-uniformities
Well I saw these cracks below me whilst flying at FL23. I think they were through the stratus down to ground.
If I see them on the way back (unlikely) I'll take a picture. C.
If I see them on the way back (unlikely) I'll take a picture. C.
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- Lemon Half
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Re: Undercasts and their non-uniformities
csearle wrote:Well I saw these cracks below me whilst flying at FL23. I think they were through the stratus down to ground.
If I see them on the way back (unlikely) I'll take a picture. C.
If you were at FL23, then my vote would be for altocumulus as the lower level.
TJH
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- Lemon Quarter
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Re: Undercasts and their non-uniformities
No chance of a photo. Turns out that it's dark at 2130 CET.
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