It is known that Venus is completely shrouded in dense clouds. To understand what's going on underneath them,
In the new work, the authors created a technique for observing the circulation of clouds over the night side of Venus: they developed a technology for compensating noise in images of Venus clouds.
The thermal signature of the clouds on the night side of Venus revealed from the noises. Image source: JAXA / Imamura
Preliminary data showed that at nightthe circulation of air masses in the planet's atmosphere changes direction by 180 °C: from equatorial-polar during the day to polar-equatorial at night. Scientists believe that this phenomenon may enhance superrotation.
We can finally observe the night windsfrom north to south, known as meridional circulation. Surprisingly, they go in the opposite direction of their daytime winds. Such a drastic change cannot occur without significant consequences. This observation could help us build more accurate models of Venus' weather system, which will hopefully resolve some long-standing questions about Venus' weather and perhaps Earth's weather.
Takeshi Imamura, professor at the University of Tokyo
This weather data on Venus can help scientists understand the planet's geological history, as well as how weather forms on other planets.
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