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   Are red sunrises a result of air pollution?

   • Yellow and orange light has shorter wavelengths than red light, so sunsets and sunrises in polluted areas often have a higher proportion of red light. That isn’t to say that every red sunrise or sunset is the result of air pollution.

   Why Is the Sky Red? The Science Behind Red Skies

   www.color-meanings.com/why-is-the-sky-red/

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   Does 'pollution' cause red sunsets?

   • "In an atmosphere with no junk at anytime, you'll never get a sunset that would make someone with normal color vision say, 'Wow that's red!'" says Craig Bohren, professor emeritus of meteorology at Pennsylvania State University. "It is certainly true that the 'pollution' results in redder sunsets."

   Fact or Fiction?: Smog Creates Beautiful Sunsets

   www.scientificamerican.com/article/fact-or-fiction-smog-creates-beautiful-sunsets/

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   How does pollution affect a sunset?

   • For example, volcanic eruptions send debris into the atmosphere. These particles cause light waves to scatter at a higher rate. Anyone who sees a sunset just after an eruption will see a glowing orange sky. Pollution also changes the sunrise or sunset. In crowded cities, pollution from auto engines blocks many shades of light.

   Why Does the Sky Change Color at Sunrise and Sunset?

   www.wonderopolis.org/wonder/why-does-the-sky-change-color-at-sunrise-and-sunset

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   Why do we not see the bright colors of the Sunset?

   • Blue light travels fast, so it scatters more often than most other colors. That's why we don't see the bright colors of the sunset during the day! So much blue light is scattered that it hides most other colors. Other colors peek through at sunrise and sunset because the light travels farther to reach us.

   Why Does the Sky Change Color at Sunrise and Sunset?

   www.wonderopolis.org/wonder/why-does-the-sky-change-color-at-sunrise-and-sunset

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   What makes Red Sky sunrises and sunsets so special?

   • What often makes red sky sunrises and sunsets even more spectacular is the position of the Sun in the sky, relative to cloud. When the Sun is low on the horizon, rays of light shine back up onto the underside of cloud high in the sky, reflecting back those bright orange and red colours that make it look as if the sky has turned to fire.

   Here's The Science Behind The Magical Colours of Sunsets And Sunrises

   www.sciencealert.com/what-makes-the-colours-in-those-beautiful-sunrises-and-sunsets

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   What causes sunset colors?

   • Sunset colors are created by a phenomenon called Rayleigh scattering. It’s the same phenomenon that makes the sky appear blue during the day. Sunlight contains all the colors of the rainbow. But not all the colors reach the ground in the same concentration.

   Why sunsets are better in the winter - Vox

   www.vox.com/science-and-health/2019/11/22/20970563/sunset-science-explained-rayleigh-scattering

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2. www.scientificamerican.com › article › fact-orFact or Fiction?: Smog Creates Beautiful Sunsets

   www.scientificamerican.com › article › fact-or

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   So, although aerosols may make a sunset red, excess pollution will also dampen the overall sunset experience. In fact, the transition from day to night might be a whole lot peachier—and ...

   • Why is The Sky Blue

     Anthony D. Del Genio of the NASA Goddard Institute for Space...

3. science.howstuffworks.com › smog-sunsetDoes smog make for beautiful sunsets? | HowStuffWorks

   science.howstuffworks.com › smog-sunset

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   The aerosols in smog are varied, and relatively large, to the point that they can scatter every wavelength of light. The result is a sunset with no colors at all. The sky is simply a hazy, grayish white, with all of the yellow, orange and red having been scattered out before they could reach the eye.

   • Author: Julia Layton

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     The Science Behind Sunsets

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5. www.sciencealert.com › what-makes-the-colours-inHere's The Science Behind The Magical Colours of Sunsets And ...

   www.sciencealert.com › what-makes-the-colours-in

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   Jul 18, 2018 · With a red sky sunrise, the eastern sky is more likely to be cloud-free with finer weather, allowing the Sun to shine upon the higher cloud moving in with the deteriorating weather from the west. With a red sky sunset, it's the western sky more likely to be clear, with the Sun's rays shining up onto cloud further east.

6. www.color-meanings.com › why-is-the-sky-redWhy Is the Sky Red? The Science Behind Red Skies

   www.color-meanings.com › why-is-the-sky-red

   • Cached

   Yellow and orange light has shorter wavelengths than red light, so sunsets and sunrises in polluted areas often have a higher proportion of red light. That isn’t to say that every red sunrise or sunset is the result of air pollution.

7. www.vox.com › science-and-health › 2019/11/22Sunset color science: why the coldest months of the year ...

   www.vox.com › science-and-health › 2019/11/22

   Nov 22, 2019 · At sunset, light has to travel through a greater distance of atmosphere to reach our eyes — so even more blue light, and even some green and yellow light, gets filtered out. That leaves us with...

   • Author: Brian Resnick

8. www.wonderopolis.org › wonder › why-does-the-skyWhy Does the Sky Change Color at Sunrise and Sunset?

   www.wonderopolis.org › wonder › why-does-the-sky

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   Mar 9, 2019 · Pollution also changes the sunrise or sunset. In crowded cities, pollution from auto engines blocks many shades of light. The sunsets in highly polluted areas are just bright red instead of a pattern of colors. Finally, clouds influence the appearance of a sunrise or sunset.

9. www.newscientist.com › article › mg13217914-400Painting the sky red: The glowing colours of a sunset are a ...

   www.newscientist.com › article › mg13217914-400

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   Oct 19, 1991 · On a day when the pollution is particularly heavy, the Sun appears as a dull red disc that may fade away even before it reaches the horizon. But why does the Sun look…