Meteorology (from Greek μετέωρος, metéōros, "high in the sky"; and -λογία, -logia) is the interdisciplinary scientific study of the atmosphere that focuses on weather processes and forecasting (in contrast with climatology). Meteorological phenomena are observable weather events which illuminate and are explained by the science of meteorology. Those events are bound by the variables that exist in Earth's atmosphere. They are temperature, air pressure, water vapor, and the gradients and interactions of each variable, and how they change in time. The majority of Earth's observed weather is located in the troposphere.  
Meteorology, climatology, atmospheric physics, and atmospheric chemistry are sub-disciplines of the atmospheric sciences. Meteorology and hydrology compose the interdisciplinary field of hydrometeorology.
Interactions between Earth's atmosphere and the oceans are part of coupled ocean-atmosphere studies. Meteorology has application in many diverse fields such as the military, energy production, transport, agriculture and construction.
Dimensions of Ocean
The oceans are far deeper than the continents are tall; examination of the earth's hypsographic curve shows that the average elevation of Earth's landmasses is only 840 metres (2,800 ft), while the ocean's average depth is 3,800 metres (12,000 ft). Though this apparent discrepancy is great, for both land and sea, the respective extremes such as mountains and trenches are rare.
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