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I'm working on this planet that has 1.5x earth's mass, so the gravity is a little stronger, given that the density it's the same. The gravity is 1.15x earth's. As i don't know how to calculate the mass of the atmosphere in such conditions i assumed that it would be proportional to the planet mass, in other words 1.5x the mass of earth's atmosphere.

Atmosphere absolute info (comparing to earth)
mass 77,265x10^17kg (1.5)
molecular mass 29,332g/mol (1.01)
atm. pressure 1,3x10^5Pa (1.28)
density 1,581kg/m³ (1.32)
N2 69,07% (0.885)
O2 29,88% (1.43)
Ar 0,94% (1)
CO2 0,105% (2.58)
Star absolute info (comparing to sun)
mass 1.4x10^30kg (0.7)
luminosity 0,952x10^26W (0.25)
Planet absolute info (comparing to earth)
mass 8.960,4x10^21kg (1,5)
surface area 668,32x10^12m² ()
albedo 0.4 (1.33)
mean atmosphere surface temperature 290K (+2°)
tropical sea surface temperature 301-305K
temperate sea surface temperature 389-395K
polar sea surface temperature 275-281K
average distance from star 75,000,000km (0.5)
minimum distance from star 73,475,000km
maximun distance from star 76,525,000km
orbital period 185 planet days
rotational period 20h

Given this informations, can the wind in this planet be too much destructive?

I'm a little aware about this because i asked about the tides in the same planet and things are going crazy in there...

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  • $\begingroup$ None to help me? $\endgroup$
    – Marcos Marolato
    Commented Apr 1, 2021 at 1:51
  • $\begingroup$ Wind is caused by uneven heating of the planet so you need to give heating information. $\endgroup$
    – user64888
    Commented Apr 1, 2021 at 2:36
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    $\begingroup$ Like the average temperature of the planet? Star info? $\endgroup$
    – Marcos Marolato
    Commented Apr 1, 2021 at 2:38
  • $\begingroup$ yeah, and any geothermal or other forms of heating. Stuff like hurricanes are also caused by water heating at different rates than ground I believe. So that matters also I think. $\endgroup$
    – user64888
    Commented Apr 1, 2021 at 2:41
  • $\begingroup$ you need min, max, avg distance from sun, year and day length, etc. $\endgroup$
    – user3652621
    Commented Apr 1, 2021 at 15:24

1 Answer 1

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The amount of force exerted by the wind is determined by the density of the atmosphere, and the velocity of the wind. It takes more energy to accelerate a denser fluid to the same velocity.

Heavier and denser planets tend to hold more fluid down with their stronger gravity, but many other factors influence how much atmosphere a planet has. Earth could probably have an atmosphere much more like Venus, or much more like Mars, if its formation and history had been just a little different.

There are so many variables I can imagine, that I would say you can be fairly free here.

Planets with denser atmospheres but a similar amount of energy from their Sun as Earth gets, would have slower winds. But the winds would press harder compared to winds of similar speed on Earth. Hard to even compare strength directly. At 50x Earth's atmospheric pressure, walking against a 10 km/h wind would feel halfway to like swimming against a strong current in water. You would be able feel the eddies that swish around your hands as you move them through the air, but you could walk against it. And with modern engineering we could easily construct buildings to resist it. But gusts of 40 km/h would knock you over with a full body blow, and building to withstand that would require some creative engineering.

A human can actually breathe, in the real world, at such pressures. It requires very slow acclimatization while slowly lowering the oxygen ratio.

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