How does CO2 from automobiles and market attain the upper levels of our atmposphere?

Question by helpmefixstuff: How does CO2 from vehicles and sector reach the upper levels of our atmposphere?
May well sound like a silly query but…..
Back when I was at school, we were taught that carbon dioxie is a relativly heavy gas. Why, for that reason, does it not type a thick layer at street level from automobile emissions? How does it rise into the higher levels of our atmosphere to form a greenhouse layer?

Very best answer:

Answer by nospamcwt
Relatively heavy implies that is would tend to sink if the air wasn’t moving. Even on a calm day with small wind, air movement is wonderful adequate to negate the really little differences in weight between the a variety of gases in our atmosphere, maintaining them mixed collectively. Also, CO2 doesn’t need to have to attain the upper levels to generate a green home impact.

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2 Responses to How does CO2 from automobiles and market attain the upper levels of our atmposphere?

  1. Bob says:

    The atmosphere is mixed pretty well by the effects of thermal motion.

    Like water swirling when it is heated, or ashes being carried upward from a fire.

  2. Soylent Green Aka Donkey Hotei says:

    Gasses aren’t like liquids. Any two gasses, if placed in an enclosed space, will eventually become completely mixed no matter their relative densities or temperatures. It is true that if you release a volume of carbon dioxide, or some other gas that is heavier than air, it will tend to sink and “pool” at the ground. But even in still air, the cloud of CO2 will quickly diffuse and mix with the surrounding air, and eventually dissipate.

    At room temperature, individual gas molecules move and bounce around at terrific speed, on the order of hundreds of meters per second. This means that the forces of gravity and buoyancy are not strong enough, in comparison, to prevent two gasses from mixing together. This is true even of very cold gasses.

    Another reason for this is the so called “Second Law of Thermodynamics.” This requires that any gasses, once mixed together, cannot become “unmixed”, without a substantial amount of energy. For example, by cooling and compressing the mixture into a liquid, and then distilling out the different gasses. Now, we know that the tendency of two or more gasses is to mix with each other, thus once mixed, they will not separate again under normal conditions.

    Hope that makes sense,
    ~Donkey Hotei

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