Write an essay on the effect of thermodynamics in coastal life
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Oceanography as a systematic science began in 19th century along with meteorology. “Ocean waters are saline” refers to the two most remarkable constituents of oceans, viz., the water and salts. The other well-known fact about ocean is that it is opaque to all electromagnetic radiation at wavelengths that are used in remote sensing of the atmosphere. Due to this reason, in situ observational devices are used in ocean expeditions. However, in the early stage of oceanography, progress was achieved by brave seafarers who waded difficult waters and confronted cyclones and other impediments of their voyage; if frustrated renewed their dream to reach those remote destinations, and finally succeeded in using their inventions to collect precious observations which the mankind treasures now in the form of comprehensive knowledge of intricate oceanic phenomena. It took them therefore several years of hard labour often in solitude to constitute a global picture of ocean circulation, horizontal and vertical thermal structure, and distribution of various scalar quantities such as salinity, oxygen content etc. from these time staggered ship observations. As a result, the ocean was regarded in a state of steady, large-scale flow devoid of turbulent motions. Today, this picture has completely changed as the oceanic circulations are dominated by turbulent eddies of different temporal and spatial scales. Above all, ocean is the main reservoir of water in the atmosphere, holds the key to long range forecasting of weather and to mitigate the much feared climate change due to continual increase of anthropogenic activity, which has exhausted most of the land resources. Oceans are the future resource bed of human needs, and an understanding of ocean physics is therefore very essential in exploiting the treasures within the ocean and those at its bottom.
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