Impact of changing C budget on ocean

Question 1

Precipitation

Answer 1

Increased, lower salinity, so may slow NE Atlantic circulation and effect NW Europe circulation

Question 2

CO2 dissolving

Answer 2

Forms carbonic acid that reacts with CO32- used to form shells, so now thinner, 2007 oyster crash

Question 3

Increased temperature

Answer 3

Thermal expansion, 3.5mm/yr since 1990s. Kills phytoplankton and symbiotic algae coral needs to grow. Sea ice melt, 40% Arctic retreat in 30yrs, less ice bound algae and biodiversity.

Question 4

Positive feedback example

Answer 4

More acidic so better dissolves CaCO3 and releases carbonate ions for shells