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DC上空出现怪云

DC上空出现怪云# Joke - 肚皮舞运动

s*y2013-09-17 07:09

1 楼

昨天早上，Washington DC 上空出现一个棒锤状云彩。
https://pbs.twimg.com/media/BUSCDgXIIAE95bW.jpg
https://pbs.twimg.com/media/BUS0QLPCAAACKtW.jpg
https://pbs.twimg.com/media/BUSJjqKCUAEGhFT.jpg
http://media.zenfs.com/en_US/News/LiveScience.com/roll-cloud.jp

l*i2013-09-17 07:09

2 楼

然后海军大院就出事了

z*n2013-09-17 07:09

3 楼

吓死人了

【在 s******y 的大作中提到】

: 昨天早上，Washington DC 上空出现一个棒锤状云彩。
: https://pbs.twimg.com/media/BUSCDgXIIAE95bW.jpg
: https://pbs.twimg.com/media/BUS0QLPCAAACKtW.jpg
: https://pbs.twimg.com/media/BUSJjqKCUAEGhFT.jpg
: http://media.zenfs.com/en_US/News/LiveScience.com/roll-cloud.jp

s*y2013-09-17 07:09

4 楼

象中学课文里面说的那个什么白虹贯日？

【在 l**********i 的大作中提到】

: 然后海军大院就出事了

z*i2013-09-17 07:09

5 楼

飞过了什么机？

【在 s******y 的大作中提到】

H*g2013-09-17 07:09

6 楼

最近冷空气南下，可能是锋面正在扫过DC
Arcus cloud：
http://en.wikipedia.org/wiki/Arcus_cloud

H*g2013-09-17 07:09

7 楼

以前见过大湖上的锋面照片，很壮观
http://www.flickr.com/photos/michigan_lakes_dan/823744728/light

H*g2013-09-17 07:09

8 楼

roll clouds are usually formed by outflows of cold air from sea breezes or
cold fronts in the absence of thunderstorms.
A roll cloud is a low, horizontal, tube-shaped, and relatively rare type of
arcus cloud. They differ from shelf clouds by being completely detached from
other cloud features. Roll clouds usually appear to be "rolling" about a
horizontal axis. They are a solitary wave called a soliton, which is a wave
that has a single crest and moves without changing speed or shape. One of
the most famous frequent occurrences is the Morning Glory cloud in
Queensland, Australia. One of the main causes of the Morning Glory cloud is
the mesoscale circulation associated with sea breezes that develop over the
Cape York Peninsula and the Gulf of Carpentaria. However, similar features
can be created by downdrafts from thunderstorms and are not exclusively
associated with coastal regions.

H*g2013-09-17 07:09

9 楼

Morning Glory Cloud