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On a global scale, wind and the rotation of the earth greatly influence the flow of ocean currents. [1] In a stream or river there the current is influenced by gravity, the term upstream (or upriver) refers to the direction towards the source of the stream (or river), i.e. against the direction of flow.
Ocean surface currents Distinctive white lines trace the flow of surface currents around the world. Visualization showing global ocean currents from January 1, 2010, to December 31, 2012, at sea level, then at 2,000 m (6,600 ft) below sea level Animation of circulation around ice shelves of Antarctica
Surface temperatures in the western North Atlantic: Most of the North American landmass is black and dark blue (cold), while the Gulf Stream is red (warm). Source: NASA The Gulf Stream is a warm and swift Atlantic ocean current that originates in the Gulf of Mexico and flows through the Straits of Florida and up the eastern coastline of the United States, then veers east near 36°N latitude ...
Bushfire haze in Sydney, Australia Haze as smoke pollution over the Mojave from fires in the Inland Empire, June 2016, demonstrates the loss of contrast to the Sun, and the landscape in general. Haze causing red sky, due to the scattering of light on smoke particles, also known as Rayleigh scattering during Mexico 's forest fire season Haze in ...
However, wind and tides cause mixing between these water layers, with diapycnal mixing caused by tidal currents being one example. [14] This mixing is what enables the convection between ocean layers, and thus, deep water currents. [1] In the 1920s, Sandström's framework was expanded by accounting for the role of salinity in ocean layer ...
Many physical processes over ocean surface generate sea salt aerosols. One common cause is the bursting of air bubbles, which are entrained by the wind stress during the whitecap formation. Another is tearing of drops from wave tops. [19] The total sea salt flux from the ocean to the atmosphere is about 3300 Tg (3.3 billion tonnes) per year.
These small solid particles cause the liquid to appear turbid. Turbidity (or haze) is also applied to transparent solids such as glass or plastic. In plastic production, haze is defined as the percentage of light that is deflected more than 2.5° from the incoming light direction. [1]
A geostrophic current is an oceanic current in which the pressure gradient force is balanced by the Coriolis effect. The direction of geostrophic flow is parallel to the isobars , with the high pressure to the right of the flow in the Northern Hemisphere , and the high pressure to the left in the Southern Hemisphere .