If the icecap melts, the sun's heat will be
absorbed by seawater rather than being reflected back into space.
But when
absorbed by seawater, the greenhouse gas triggers chemical reactions, causing the ocean to acidify.
However, as atmospheric CO2 is
absorbed by seawater, ocean pH declines.
Not exact matches
Aequorin gives out blue light when it binds with calcium in
seawater; this light is
absorbed by GFP, which then emits an intense green glow.
Atmospheric CO2
absorbed by the oceans» surface water produces carbonic acid, the same acid that gives soft drinks their fizz, making certain carbonate minerals dissolve more readily in
seawater.
This is the drop in
seawater pH as the oceans
absorb an estimated 22 million tons of carbon dioxide from the 80 million tons emitted each day
by human activities.
When atmospheric carbon dioxide is
absorbed into the ocean, it reacts to produce carbonic acid, increasing the acidity of
seawater and diminishing the amount of a key building block (carbonate) used
by marine species like shellfish and corals to make their shells and skeletons.
Although the CO2 that is taken up
by the ocean does not contribute to greenhouse warming, ocean warming reduces the solubility of carbon dioxide in
seawater; and thus reduces the amount of CO2 the oceans can
absorb from the atmosphere.
It does this
by shifting the series of equilibria (below) to the right, thereby increasing the capacity of
seawater to
absorb carbon dioxide from the atmosphere and
by decreasing the propensity for
seawater to desorb carbon dioxide into the atmosphere.»
We have ice melting to water with no CO2,
absorbing 300 ppm
by the time it is
seawater, and you are saying that the release of CO2 is only a miserable 16 ppm per degree??
But also, over time, most of the carbon dioxide in the atmosphere is
absorbed by the ocean, where it reacts with
seawater to form an acid that is corrosive to coral reefs, shellfish, and other marine life.
In past climate changes, warming temperatures produced increased CO2 concentrations in the atmosphere, unlike today, when humans release CO2 which is partially
absorbed by plants and
by seawater.
«Ocean pH tells us about the amount of carbon
absorbed by ancient
seawater, but we can get even more information
by also considering changes in the isotopes of carbon, as these provide an indication of its source,» says Andy Ridgwell, co-author of the study.