Prime! This is the Night Weather Appearance on Venus

Suara.com – A new study, researchers have discovered a new way of using infrared sensors on climate orbiters Venus Japan Akatsuki.

A probe arrived in orbit around Venus in 2015, used to reveal what the weather is like on the planet at night.

The sensors found nighttime clouds and some strange wind circulation patterns.

Like Earth, Venus is located in the “habitable zone” of our sun, has a solid surface and a weathered atmosphere.

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To understand the planet’s weather, the researchers studied the movement of clouds in infrared light.
While Venus’s atmosphere rotates rapidly, the planet itself has the slowest rotation of any major planet in our solar system.

This means that day and night last quite a long time, about 120 Earth days each.

Until now, only the weather on the “day side” of Venus was easy to observe.

Even in infrared, it is difficult to clearly see the night side of Venus.

There are infrared observations of the “night side” of Venus, but these studies have not been able to clearly show the planet’s nighttime weather.

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To explore this mysterious aspect of our neighboring planet, researchers turned to Akatsuki, the first Japanese rover to ever orbit another planet.

The probe is designed to monitor Venus and its weather and has an infrared imager that doesn’t need sunlight to “see”.

Despite this design, imagers have not been able to capture detailed observations of the night side of Venus.

However, by using new analytical methods to deal with the data captured by imagers, the researchers were able to indirectly “see” Venus’ elusive night weather.

“The small-scale cloud patterns in the image are faint and often indistinguishable from background noise,” said co-author Takeshi Imamura, a professor at the Graduate School of Border Science at the University of Tokyo, in a statement.

“To see details, we need to suppress distractions,” he said Space, Thursday (22/7/2021).

In astronomy and planetary science, it is common to combine images to do this, because real features in a stack of similar images quickly hide noise.

However, Venus is a special case because the entire weather system rotates very quickly, so this motion is offset, known as super-rotation, to highlight formations that are interesting to study.

With this new method of analysis, the team observed north-south winds at night and found something quite odd.

“What’s surprising is that they run in the opposite direction to their comrades during the day,” said Imamura.

According to him, such dramatic changes cannot occur without significant consequences.
“These observations can help us build a more accurate model of the Venus weather system, which will resolve some long-standing unanswered questions about Venus’ weather and possibly Earth’s weather,” he said.

Using this new method, the researchers think that future studies could reveal new details about the weather on other planets such as Mars or our own planet Earth.

While this work uses existing technology in orbit around Venus, the planet will soon see three new missions arriving that will continue to expand our understanding of Venus and its climate.

NASA recently announced two new missions to Venus, dubbed DAVINCI+ and VERITAS, and the European Space Agency revealed it would launch an EnVision mission to the planet.

The three spacecraft will launch later this decade and early 2030s.

The work is described in a study published July 21 in the journal Nature.

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