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Forum: Post Your Photos!
10-05-2009, 03:50 PM
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I sent off a query to a meteorologist, who said:
"The over exposure/city lights is making my identity a little difficult, but from your location near the coast, I am assuming they are strato-cumulus clouds generated by the difference in the land/ocean temperatures. The cooler ocean air was pushed under the rather warm inland air, thereby lifting the airmass and creating the clouds. Also, it looks like the airmass over land was somewhat stable and that is what caused the scalloped look on the bottom of the cloud deck. On several occasions I have seen a stable airmass is forced upward, which results in this scalloped look or even wavy looking cloud bases.
It's not mammatus (higher than 20,000 feet) or alto-cumulus (higher than 7,000 feet) since the city lights would not illuminate them that much.
I hope this helps,
Regards,
Michael Eckert"
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Forum: Post Your Photos!
09-26-2009, 02:01 AM
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Thanks, monochrome! Man those are nice photos.
I thought of mammatus when I saw the pattern, but these didn't have anything above them. I realize that that doesn't come across terribly well in these pics. Maybe this one shows it better?
Sorry 'bout the noisy image, my *istDS doesn't like these longish exposures.
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Forum: Post Your Photos!
09-25-2009, 09:56 PM
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Thanks for the responses. I was wondering if it was the result of an inversion or something of the sort. It seems to me that the clouds are forming under a second distinct layer of air but I don't see any signs of shear at all. Like I say, all was calm.
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Forum: Post Your Photos!
09-25-2009, 07:13 PM
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Can anyone comment on what is happening to the sky in these photos? Apparently my meteorology courses in University are too distant in the past. 8(
There was no wind at ground level at the time, and it had been a fairly warm day at ~25C with middling humidity. These were taken from my balcony in Tokyo, which is situated near the sea. It was about two hours after sunset.
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