Extrem schnelle Wolke (ca. 1.000 km/h ?)

[Gerd.RBD]

Extrem schnelle Wolke?

Zwischen 5 und 6 Uhr bildet sich die Wolke südlich von Indien, die dann mit hoher Geschwindigkeit nach Afrika zieht. Dort löst sie sich um ca. 11 Uhr auf.
Das sind ca. 5.000 km in 5 Stunden!

Kann mir das jemand erklären?

Oder hat eine Idee, was das ist.

[idefix37]

@Gerd-RBD

Very strange indeed. I don’t think it is not a real cloud, probably an artefact but not easy to explain because it appears on 2 different satellites zones. Usually at the equinox time when the sun is vertical to the earth equator we see the reflection of the sun on the sea (geostationary satellites being in the earth equator plan). But right now we see this cloud picture…
https://community.windy.com/topic/11608/reflection-of-the-sun-on-satellite-pictures?_=1680866121660

Concerning the speed of this artefact, remember that the tangential speed at the equator is about 1600 km/h (40 000 km per 24 h) and so this is the speed of the sun zenith motion from east to west … like this “pseudo cloud“.

[hangInThere]

@idefix37

Here's one over the Malay Peninsula. The reflection of the Pahang River at 4:10PM is spectacular.

The reflection also helps to bring out the very low level clouds which otherwise are almost too dark to make out.

At 4PM:

At 4:10PM:

At 4:20PM:

[idefix37]

@hangInThere
Yes, what you show is the classical reflection of the sun on waters, sea, lakes, rivers, and sometime on clouds, at equinox period in Spring and Autumn.

@Gerd-RBD
Finally I found the reason of this “pseudo cloud” that you mentioned. In fact it is shown with “Blue” setting while it appears as the sun reflection with “Visible”. So the algorithm of the Blue layer (which is a mix of visible and infrared spectrum) transforms the sun reflection into a strange cloud :)

[roachindignant]

@Gerd-RBD Very unusual indeed. I don't believe that it is a real cloud; it is most likely an artifact, but it is difficult to explain because it appears in two separate satellite zones at the same time. In most cases, we are able to observe the reflection of the sun on the ocean at the equinox, which occurs when the sun is perpendicular to the equator of the earth.

[Gkikas LGPZ]

https://www.windy.com/articles/reflection-of-the-sun-on-satellite-pictures-11608?38.248,21.731,5

[idefix37]

@roachindignant

Why are you just copying one of my post above by changing 1 or 2 words??
Just to promote your website?
Next time, you take the risk of being banned.

[idefix37]

@Gkikas-LGPZ

Thank you ! I did not remember this article :)