Antarctica's Role In The Global Climate System

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Antarctica and it’s role in the Global Climate System

The Climate of the world is made up of numerous collaborating sub-atmosphere frameworks. This paper will talk about the impact of Antarctica and its encompassing waters on each of these sub-climatic frameworks. The frameworks include: the environment, hydrosphere, cryosphere, and biosphere. The impact that Antarctica and its encompassing waters have on the atmosphere framework, as we know is connected to a fragile offset of Antarctic conditions. Cool surface temperatures and the solid Coriolis effect at high scopes make the South Polar Cell, which depicts climate designs all through Southern Australia, America, and Africa. The Antarctic waters additionally assume an urgent part in carbon
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This is a commonly observed climatic zone because it directly affects the temperature of the world, in an observable way. The thermal characteristics of Antarctica cause atmospheric states to correspond to a tenacious pattern known as a polar cell, which affects the climate far beyond the region immediately around it. The weather cell is controlled by a cyclone like polar vortex with its centre found on the Ross Ice Shelf. Cold air descending at the centre of the vortex creates a region of low pressure in the upper atmosphere. Air rushes from further north to replace the descending mass, and deflects to the left of its direction under the Coriolis force, thus creating westerlies between 35° and 65° S. The vortex is strongest when the Antarctic continent is coldest due to a steeper pressure gradient, and accordingly polar westerlies extend further north in latitude in winter. These winds are pivotal in carrying moisture from the southern ocean, which falls as rain on the so-called Roaring Forties in Southern Australia, Africa, and South America. This demonstrates the influence of Antarctic surface temperature on climate across the temperate regions of the Southern…show more content…
THC is a system of currents is responsible for the circulation of deep ocean water. Its mechanism is density gradients caused by regional variations in temperature and salinity. Cool water is denser than warmer water, and more saline water is denser than fresher water. Warm, fresh water from the tropics moves to the poles via surface currents, where it sinks and is replaced by rising deep water at low latitudes. This system is responsible for the distribution of heat from equator to pole, and is consequently an important climatic process. The Southern Ocean is origin of the Antarctic Bottom Water, the most prevalent deep water mass. It forms when surface water at the Ross and Weddell ice shelves cools through contact with the atmosphere. When sea ice forms in polynyas at these sites, brine is squeezed from the forming crystals and makes the surrounding ocean more saline. The combination of low temperature and high salinity cause the water to sink to the ocean floor. As new deep water is formed, the existing bottom water is pushed towards the equator and beyond it. Some bottom water rises near the equator, bringing nutrient rich cool water to the surface for the cycle to begin again. THC regulates temperatures at high latitudes by supplying heat. Without the cool conditions which lead to the formation of the Antarctic Bottom Water,

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