Boron isotope data Arabian Margin (Neo-Tethyan Ocean) combined with a quantitative modelling suggest that during the latest Permian,
increased ocean alkalinity primed the Earth system with a low level of atmospheric CO2 and a high ocean buffering capacity.
Not exact matches
This additional
alkalinity could partially buffer changes in seawater pH associated with
increasing atmospheric CO2 locally, thus reducing the impact of
ocean acidification on coral growth.»
A decrease in
ocean pH of 0.1 units corresponds to a 30 %
increase in the concentration of H + in seawater, assuming that
alkalinity and temperature remain constant.
The planetary - boundaries group, which published a sort of manifesto in 2009, argues for
increased restraint and, where necessary, direct intervention aimed at bringing all sorts of things in the Earth system, from the
alkalinity of the
oceans to the rate of phosphate run - off from the land, close to the conditions pertaining in the Holocene.
The anthropogenic input of fossil fuel carbon into the atmosphere results in
increased carbon dioxide (CO2) into the
oceans, a process that lowers seawater pH, decreases
alkalinity and can inhibit the production of shell material.
It would
increase alkalinity and the
oceans ability to absorb CO2.
In essence, CO2
increases both
ocean acidity and
ocean total
alkalinity.
The
increased CO2 has also
increased (not reduced) total
ocean alkalinity (TA).
Less strong El Ninos since 1998 have helped to flatten the decline in
alkalinity but we can see that the decline remains in progress due to
increased global cloudiness at a time of a less active sun and less sunshine into the
oceans.
Increasing the
alkalinity of
ocean water around coral reefs has been proposed as a geoengineering measure to save shallow marine ecosystems.
The
increased carbon dioxide absorbed by the
oceans is being recorded as a measured decrease in
ocean alkalinity.