Ocean currents - Surface ocean currents can occur on local and global scales and are typically wind-driven, resulting in both horizontal and vertical water movement. Deep ocean currents are density-driven and differ from surface currents in scale, speed, and energy. Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is. The greater the density differences between different layers in the water column, the greater the mixing and circulation. Density differences in ocean water contribute to a global-scale circulation system, also called the global conveyor belt. The global conveyor belt includes both surface and deep ocean currents that circulate the globe in a 1,000-year cycle. The ocean’s global conveyor belt plays a key role in distributing heat energy and regulating weather and climate. The driving force behind this circulation system is All

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Surface ocean currents can occur on local and global scales and are typically wind-driven, resulting in both horizontal and vertical water movement. ... Water density is affected by the temperature, salinity (saltiness), and depth of the water. The colder and saltier the ocean water, the denser it is. Mar 21, 2013

A. Earth's orbital distances around the Sun throughout the year

B. differences in the heat energy balance at different latitudes on Earth

C. convections cells throughout the oceans that are the result of the Coriolis effect

D. the circulation of air in the troposphere due to differences in incoming solar radiation

science not chemisty