←back to thread

157 points Helmut10001 | 4 comments | | HN request time: 0s | source
Show context
jmclnx ◴[] No.43593152[source]
Interesting, the area I live in is expected to get more rain as climate change gets worse. So I would think we would have more cloud cover. But the article is about "reflective clouds".

As I look out my window, I see dark clouds right now as opposed to white fluffy clouds. Will need to note the colors as time goes on for my fully non-scientific surveys :)

replies(2): >>43593245 #>>43593670 #
goodluckchuck ◴[] No.43593245[source]
Clouds are all the same color. The darkness we see is the shadows from other clouds.
replies(2): >>43593448 #>>43593497 #
1. jijijijij ◴[] No.43593448[source]
How come you sometimes see very dark, lonely clouds in blue skies?
replies(2): >>43593515 #>>43593549 #
2. epohs ◴[] No.43593515[source]
Likely because they are tall and tilted in a direction facing the sun, so that the moisture blocks more of the light than it would if the sun was hitting it at a more oblique angle.
3. Rexxar ◴[] No.43593549[source]
Your relative position to the sun and the cloud.
replies(1): >>43593963 #
4. jijijijij ◴[] No.43593963[source]
I am not convinced. This would mean it could only be "blocking" the sun. If anything, it would be atmospheric light reflections blocked. In any case, it's not "other clouds".

I think diffraction has to play a role. Why wouldn't it? Dense, or raining clouds certainly have different water droplet sizes and shapes than fine, fluffy clouds. They may even reflect the ground or sky at some point, I imagine, like the ocean.