This only make sense, if the warm water is
heavier than the cold water above.
Not exact matches
The more
heavy water, the
colder the environment was in which the
water formed, meaning it likely came from farther away in the disk — or may even pre-date the disk, since it's easier for
heavy water to form in the molecular cloud that spawned the star and planetary system
than in a dust disk.
When the global temperature is high, more
heavy water evaporates around the world
than when it's
cold.
As it pours into the Atlantic, the freshwater is lighter and
colder than heavier, salty
water that typically occupies that area.
Ice formation expels most of its salts and makes the also
cold waters heavier than the deep ocean
waters.
So, deal gas with no actual volume has nothing to expand and condense which which is how we get convection as heated real gases mainly nitrogen and oxygen and
water expand becoming lighter
than air and so rise which spontaneously makes
colder heavier real gases sink — in the fluid medium they comprise.
Ideal gas which has no mass therefore no weight under gravity because there is nothing on which gravity can pull; which has no volume therefore does not expand or condense changing its weight under reduced and increased pressure or heat and
cold and so does not become lighter or
heavier than air under gravity; with no attraction therefore merely capable of bouncing off another and not capable of undergoing chemical changes, such as
water and carbon dioxide in the atmosphere forming carbonic acid.