Noctilucent Clouds over Denmark - a timelapse film of the night shining clouds on the night sky

Experience the rare and mysterious noctilucent clouds on the night sky in this timelapse film. Noctilucent clouds (or literally ‘night shining clouds’ from Latin) only form when the right conditions are met - but they are one of nature’s most intriguing shows on Earth.
All shots in this film are made in Denmark in the summer 2019 - between June 17 and July 16. The noctilucent clouds (NLC's) are an elusive astronomical phenomenon happening during the bright summer nights in the upper northern hemisphere. They can be seen in the twilight between latitudes 45 and 65 degrees north. Denmark is located at 55 degrees north and is thus one of the best locations for observing the noctilucent clouds. The noctilucent clouds can also form in the Southern Hemisphere, but they're dimmer and less frequent.
AT THE EDGE OF SPACE
Noctilucent clouds are the highest clouds on Earth at the edge of space, and while all other tropospheric clouds remain plunged in darkness noctilucent clouds can still catch the sunlight because of their high position in the atmosphere. But the noctilucent clouds are so faint that they are only visible to us when the rest of the atmosphere is in darkness.
The noctilucent clouds are formed by ice crystals approximately 83 kilometers above the Earth, in the so called mesosphere atmospheric layer. This is about four times higher than the highest clouds we normally see. Because the air is so thin in this part of the atmosphere, the temperature needs to dip below -120°C before the noctilucent clouds can be formed. This can only happen during the northern hemisphere summer. While all the hot air in the bottom part of the atmosphere expands, it cools the upper layers allowing a drop in temperature.
For the clouds to form, they also need some kind of particles for the water to condense on to. In the mesosphere, the main source of these particles is from meteors. Thin particles from incoming meteors are released when they burn up in the Earth’s atmosphere.
OCEAN OF ICE
When the sunlight is reflected at a certain angle from the ice particles it makes the noctilucent clouds glow in the dark. The clouds can only be observed around the summer solstice when the sun is located between 6° and 18° elevation below the horizon. One to two hours after sunset the sky is dark enough for the clouds to become visible.
The light that is reflected from the noctilucent clouds passes through the ozone layer before it gets to our eyes. Ozone absorbs red light and allows blue light to pass through, which is why the noctilucent clouds take on a striking blue colour.
Even though the air may look still in the mesosphere the noctilucent clouds show us how the atmosphere flows at the edge of space. Noctilucent clouds form many different shapes which often makes them look like an ocean of ice in the sky.
INDICATOR OF HUMAN-CAUSED CLIMATE CHANGE
The noctilucent clouds were first time observed in 1885, two years after a massive eruption of the Indonesian volcano Krakatoa. All the ash and water vapor that were spewed into the atmosphere created the noctilucent clouds, mesmerizing sunsets and other effects around the world. The impacts of the volcano disappeared but the new clouds did not. In fact, the noctilucent clouds have slowly increased over the last century. In the late 1800s the clouds were likely only visible on special summer nights once every few decades. Today they are normally visible a few times each summer.
Now, a new study explains why - more noctilucent clouds are forming because of human-driven climate change. It might be the clearest signal of global change tied to the greenhouse gas build up.
Methane emissions have increased water vapor concentrations in the mesosphere by about 40 percent since the late 1800s, which has more than doubled the amount of ice that forms in the mesosphere. Methane produces water vapor through chemical reactions in the middle atmosphere.
The noctilucent clouds might be both immensely beautiful and intriguing - but their increasing strength and appearances on the night sky is alarming.
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Photographer and Editor: Casper Rolsted
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Music: Peter Nanasi
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[@Barnyz]

This is magical, its like looking up at a mystical ocean in the sky

[@CasperRolsted]

Yes, it is truly amazing. I had some spectacular nights looking at this phenomenon.

[@meltina7770]

Water shining in sky...wonderful nature

[@CasperRolsted]

Yes, it is an amazing phenomenon.

[@doloresbarlocco9682]

Wonderful video , wonderful music !!! Thank's 💕💕💕👍👍👍grazie mille a te !😊

[@CasperRolsted]

You are welcome, Dolores. Thank you very much.

[@Cornelis56]

This is top! Amazing!

[@CasperRolsted]

Thanks a lot.

[@ramonmarks4734]

Thank you, for sharing those wonderful moments. So beautiful to watch.

[@CasperRolsted]

Thank you so much, Ramón. Great you liked it.

[@geniusnel5418]

I come for UPDT This video it's incredible and interesting to see

[@CasperRolsted]

Great. Thank you so much.

[@UnityOfDiversity_9]

The upside-down ocean with floating stars) Thank you for delight for the soul. I admire your work and miss this little fairy-tale country)

[@CasperRolsted]

You are welcome. I saw this first time last year ... such an amazing phenomenon.

[@tonnirolsted8737]

Wow ... amazing timelapse film. Love those beautiful clouds.

[@CasperRolsted]

Thank you so much. They are amazing.

[@KNOWHOPE72]

Nothing like combining ethereal scenes with ethereal music. Thanks for sharing, Casper.

[@CasperRolsted]

You are welcome. Thanks a lot.

[@nordiclightphototours153]

As always excellent film Casper. Have loved watching this special film.

[@CasperRolsted]

Great. Thank you so much.

[@WinslowLincoln]

Wonderful! Thanks for producing and posting.

[@CasperRolsted]

You are welcome, Winslow. Great you liked it. Thanks.

[@wendyraymond1751]

Absolutely incredible. .so beautiful. .really is an outstanding video thanku so much an with a beautiful piece of music. .love an god bless. .from Cyprus x

[@CasperRolsted]

You are welcome, Wendy. So glad you enjoyed the film.

[@bethroesch2156]

What a perfect way to start my Sunday morning ❤️ thank you

[@CasperRolsted]

That is great, Beth. I am so pleased you liked it. You are welcome.

[@soniahachemi4025]

AMAZING, Casper!!! Great job my friend!!!

[@CasperRolsted]

Thank you so much, Sonia.

[@soniahachemi4025]

@@CasperRolsted 🖐️😄!!

[@tonypepiz]

The water above the waters so magnificent. We live in a enclosed environment and cant go no where.

[@70Laffen]

Vakkert!! Gleder meg til å se disse igjen. I Trøndelag, Norge, ser vi disse best om høsten.

[@CasperRolsted]

Tusinde tak. Jeg fik en masse flotte optagelser sidste sommer og glæder mig til at opleve de flotte skyer igen.

[@craigtaylor885]

That was great. Thanks for the hard work that went into capturing these images and putting the video together. My night time lapse KZbin videos have been focused on the Aurora and stars but I think it's time I explore noctilucent clouds.

[@CasperRolsted]

Thanks a lot, Craig. Great you liked it. Yes, it took for sure lot of time shooting and editing this fillm ... but it is such an interesting phenomenon. If you live in a good area for seeing the noctilucent clouds it is worth using some time exploring the night sky.

[@barbc4767]

Stunning!

[@CasperRolsted]

Thank you very much.

[@yesemitesam333]

I'm so glad you provided the link to this from one of your other videos - it's a technical and artistic masterpiece. My congratulations to you on a wonderful piece of work. I happen to live at 58º N so I shall make a point of watching the night skies next summer. Thanks again.

[@CasperRolsted]

Yesemite Sam You are welcome. I am very happy you enjoyed it. Those clouds are amazing.

[@CasperRolsted]

Yesemite Sam The next 6 months I will post several films about the nature in Denmark ... I hope you will like them.

[@Benfilms]

Beautiful Casper!

[@CasperRolsted]

Thank you so much, Ben

[@NiherRD]

superb job bro

[@CasperRolsted]

Thank you so much.

[@allinwith2sChip]

Good work nicely done ✅👍🏻😉

[@CasperRolsted]

Thank you so much 👍

[@allenamabisca6914]

Excellent photography and music for such a mysterious type of cloud. The question is, why are they appearing now when they were unknown throughout history prior to the 1880's?

[@CasperRolsted]

Thanks a lot. Methane emissions and and probably rocket launches is causing these clouds.

[@dennycarroll1314]

Only thing I can say is that is beautiful

[@CasperRolsted]

Thank you so much. Great you liked it.

[@stellam5226]

Qué hermosa canción

[@hafiyazhad6344]

btw,where can i see this beutiful clouds?

[@damianmartinez7575]

for when new video friend. I want to see more of these beautiful videos

[@CasperRolsted]

I have several films coming soon, Damian. I am very pleased that you enjoy my work.

[@damianmartinez7575]

@@CasperRolsted but of course I enjoy them, you are reliving what I love about this world, its nature. I will continue supporting you friend.

[@lecherancia9709]

lpm alguien habla español??

[@f.romerr]

What's the name of the song?

[@GreatAmericanNV]

see geoengineeringwatch.org for more examples of high altitude aerosol spray drifting with some ionospheric heating

[@CasperRolsted]

These are ice crystals ... read the film description to learn more.

[@brigittebuntrock5025]

I think Chemtrails with Haarp. Sorry

[@brigittebuntrock5025]

@Geria Wright Geoingeniering .I have seen the same Clouds in Germany