Chapter 03: Impacts of climate change on the physical oceanography of the Great Barrier Reef

Abstract

The oceans function as vast reservoirs of heat, the top three metres of the ocean alone stores all the equivalent heat energy contained within the atmosphere29. This is due to the high specific heat of water, which is a measure of the ability of matter to absorb heat. The ocean therefore has by far the largest heat capacity and hence energy retention capability of any other climate system component. Surface ocean currents (significantly forced by large scale winds) play a major role in redistributing the earth’s heat energy around the globe by transporting it from the tropical regions poleward principally via western boundary currents such as the East Australian Current (EAC). These currents therefore have a major affect on maritime and continental weather and climate.