Scientists from the Smithsonian Institute and Johns Hopkins University have created a model of the Mars atmosphere and came to the conclusion that before there was full-fledged rain. In addition, they believe that in the distant past Mars had something in common with the Earth atmosphere.
However, the researchers, Dr. Robert Craddock (Dr. Robert Craddock) and Dr. Ralph Lorenz (Dr. Ralph Lorenz), recall that initially the atmospheric pressure here was much higher than on Earth — about four times. And this affects how much hits the surface of the planet water drops and how big they were.
When Mars was very young, the drops were tiny, no more than 3 mm of rain was more like mist. Then, as soon as atmospheric pressure was falling, the drops became more and more the rain came stronger In the end came down to the fact that droplets with a diameter of 7.3 mm and more began to leave small craters on the planet’s surface. Subsequently, the water had created a real valley. When the atmospheric pressure on Mars has dropped below the earth, on the surface is literally swept these tremendous hurricanes.
“Many analyze rain on the Earth, but few have tried to use these theories to understand the atmosphere of early Mars,” says Robert Craddock.