On the other hand scientists have recognized that the ocean currents circulating around the planet earth provoke huge global climate changes. These ocean currents, or the Ocean Conveyor, give out infinite quantities of heat around earth, and are pivotal in influencing Earth’s climate.
According to Stefan Rahmstorf (5, Jan 2010) the ocean currents occupy approximately 71% of the planet Earth and take up about twice the sun's radiation when compared to the atmosphere and land surface. Another key role of oceans is the allocation and accessibility of water all over earth and is considered as earth’s biggest reservoir of water. The water vapors evaporated from the oceans are transferred to the atmosphere where it cools, condenses, and ultimately precipitates in the form of rain or snow. The ocean circulation or water properties interrupt this hydrological cycle on a universal scale, and result in flooding and long-term droughts in different regions.
Ocean currents have their influence on many areas of the world. North Atlantic is one example that is influenced by these ocean currents. Some areas of coastal Norway have -2°C in January and 14°C in July; whereas areas at the same latitude on the Pacific coast of Alaska are extremely colder: -15°C in January and just 10°C in July. The ocean current next to the Norewgian coast protects the Greenland-Norwegian Sea from freezing in winter. The remaining of the Arctic Ocean, although far away from south, stays ice-covered.
Ocean currents often change direction. A large quantity of heat evolves from the oceans and appears in the form of water vapor, mainly the plentiful greenhouse gas on Earth.
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