Sea surface temperature

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  • Sea Surface Temperature
definition
  • A measure of the average kinetic energy of the vibration of water molecules, measured or estimated at the sea surface.  
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Abstract from DBPedia
    Sea surface temperature (SST) is the water temperature close to the ocean's surface. The exact meaning of surface varies according to the measurement method used, but it is between 1 millimetre (0.04 in) and 20 metres (70 ft) below the sea surface. Air masses in the Earth's atmosphere are highly modified by sea surface temperatures within a short distance of the shore. Localized areas of heavy snow can form in bands downwind of warm water bodies within an otherwise cold air mass. Warm sea surface temperatures are known to be a cause of tropical cyclogenesis over the Earth's oceans. Tropical cyclones can also cause a cool wake, due to turbulent mixing of the upper 30 metres (100 ft) of the ocean. SST changes diurnally, like the air above it, but to a lesser degree. There is less SST variation on breezy days than on calm days. In addition, ocean currents such as the Atlantic Multidecadal Oscillation (AMO), can effect SST's on multi-decadal time scales, a major impact results from the global thermohaline circulation, which affects average SST significantly throughout most of the world's oceans. Coastal SSTs can cause offshore winds to generate upwelling, which can significantly cool or warm nearby landmasses, but shallower waters over a continental shelf are often warmer. Onshore winds can cause a considerable warm-up even in areas where upwelling is fairly constant, such as the northwest coast of South America. Its values are important within numerical weather prediction as the SST influences the atmosphere above, such as in the formation of sea breezes and sea fog. It is also used to calibrate measurements from weather satellites.

    海水温(かいすいおん)とは、ある一定の深度における海水の温度のこと。湖沼や大規模な河川も対象にすることがある。単に海水温というときは、海面から海面下数十cm~十数mの海面水温を指すことが多い。 海水温が水の蒸発量に非常に関わりが深いことから、気象学の観測対象とされ、気候学においても重要視される。漁業の分野においても、魚群の移動に関連しているため必要なデータであるとされる。また、特に水棲生物の分布や生態にも大きく関連しており、生物学においても重要とされる。

    (Source: http://dbpedia.org/resource/Sea_surface_temperature)

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