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Home https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ Science https://server7.kproxy.com/servlet/redirect.srv/sruj/smyrwpoii/p2/ A volcanic eruption in Russia has caused purple sunsets around the world

A volcanic eruption in Russia has caused purple sunsets around the world



A school team noticed that in the summer, sunsets and sunsets had more of a purple color to them. They sent a high-altitude balloon to collect samples of particles in the Earth's stratosphere, according to a news release from the school last week.

"These particles, or aerosols, absorb sunlight as it passes through the air, which in combination with the absorption of light by the ozone layer, gives sunrises and sunsets a purple tint," says the release.

On June 22, a Russian volcano called Raikoke erupted, sending ash and volcanic gases from its 700-meter-wide. crater to the environment. The explosion was so huge that astronauts could see the International Space Station, NASA said in a statement.

In a normal, non-volcanic sunset, light from the sun must travel through a significant amount of the Earth's atmosphere, and blue light is spreading over the aerosols it encounters. This means that less blue light reaches our eyes from directions closer to the sun, causing the sky to appear orange and red.

When volcanic aerosols are present in the stratosphere, the blue light scattered from aerosols near the surface of the Earth may scatter again, this time towards our eyes and cameras. This blue light blends with the red light coming from the sun, giving the sky a purple color.

Lars Kalnajs, an associate in the school's Laboratory for Atmospheric and Space Physics, led the project and said it would explode. is no cause for concern, but warns that we need to prepare for something bigger.

  Why a volcanic eruption caused a & # 39; years without summer & # 39; in 1[ads1]816

"A really big explosion will have a huge impact on humanity," Kalnajs said in a news release.

He mentions an eruption in Mount Tambora in 1815 that led to a "summer-free year" due to the ash and volcanic material awaiting the environment.

"There are crop failures all over the world, and there is ice in the Pennsylvania rivers that did not melt until June." Said Kalnajs.

That's one reason his team is conducting research after the Raikoke explosion. Preliminary data collected to date show that some layers of aerosol in the stratosphere are 20 times thicker than normal in the explosion, according to the news.

"It lets you know that you don't have to put a whole lot of aerosols in order to change its composition," Kalnajs says. "It is a relatively small volcanic eruption, but it is sufficient to affect most of the northern hemisphere."

The group's research is expected to be published later this year.


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