As the temperature increased in the past, oceans also released more carbon dioxide because warm water holds less carbon
dioxide than cold water.
Not exact matches
That deep
water is not only rich in nutrients, it also has relatively high concentrations of carbon
dioxide, both because it is
cold (
cold water can absorb and hold more carbon
dioxide than warm
water) and because the decomposition of organic matter that sinks into the depths releases carbon
dioxide.
There would be more open ocean, and
cold water absorbs carbon
dioxide at a greater rate
than warm
water.
Now, if you have all this very
cold, nearly freezing
water surrounding these ice caps, sucking up carbon
dioxide out of the polar atmosphere, at nearly the highest possible rate, 30 times faster
than oxygen, and 70 times faster
than nitrogen, doesn't it stand to reason that the air that remains might just have a lot less carbon
dioxide in it
than the atmosphere across the rest of the planet?
There would be more open ocean, and
cold water absorbs carbon
dioxide at a greater rate
than warm
water.
Carbon
dioxide is fully part of that
water cycle where
water heated by the thermal infrared direct from the Sun evaporates and anyway lighter
than air rises in air and takes away heat from the surface — all pure clean rain is carbonic acid, the
water vapour spontaneously joining with carbon
dioxide in the atmosphere releases its heat in the
colder heights and condenses out back into liquid
water and ice, cooling the Earth from the 67 °C it would be without the
water cycle.
Since this
cold water is denser
than the hot
water it's replacing, it potentially provides more pore space for storing carbon
dioxide.
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.