Jakarta –
View awan most rare in the world pampered residents in parts of the United States, Europe and Canada a few days ago. Clouds with an equally beautiful view were last seen about 15 years ago.
Known as noctilucent clouds, these clouds have a charming blue glow in the sky and can be seen after the sun begins to sink in the horizon. In fact, in general in this world, the clouds will glow orange light at sunset.
As quoted detikINET from the Daily Mail, Tuesday (5/7/2022), these noctilucent clouds (NLCs) are formed in the mesospheric area, at an altitude of about 80 kilometers from the Earth’s surface, making it the highest cloud in the atmosphere.
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These clouds consist of ice crystals that become visible at dusk, when the Sun shines from the horizon. “There is no scene quite like this,” wrote the United States National Weather Service.
Awan it appears blue with a silver tinge. Astronauts on the International Space Station can also see this spectacular sight.
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Noctilucent blue clouds. Photo: Facebook— |
On the other hand, climate change is considered to make this cloud easier to develop. That’s because there are more greenhouse gases in the atmosphere, making water vapor higher and causing these kinds of clouds to form.
Cora Randal, a professor at the University of Colorado, puts forward the theory that this increase in cloud scale is also related to the amount of water vapor produced by the launch of the rocket into space.
Awan noctilucent clouds (NLCs) were first described in the mid-19th century after the eruption of Mount Krakatoa. Volcanic ash spreads in the atmosphere, making the light of the setting sun clearly visible and the clouds observable.
Watch Videos “Sighting of Black Clouds in the Shape of Waves in the Sky of Kukar, East Kalimantan“
[Gambas:Video 20detik]
(fyk / fay)
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