Abstract
Water vapour is a very important meteorological element because it is a crucial link in water circulation on the globe. Air humidity is most often characterised in meteorology using the following characteristics: actual water vapour pressure, relative humidity, and saturation deficit. It should be mentioned here that, when relative humidity is used to describe the humidity conditions in the Arctic, a distinction should be made between the expression of relative humidity in terms of percentage of saturation with respect to ice, and its expression in terms of saturation with respect to water. Measurements of air humidity in low temperatures (particularly below −10°C) using both psychrometers and hair hygrometers are highly inaccurate. More details can be found in studies such as those by Koch and Wegener (1930), Loewe (1935), Sverdrup (1935), Gol’cman (1939, 1948), Ratzki (1962), and Prik (1969).KeywordsRelative HumidityWater Vapour PressureSaturation DeficitAtlantic Storm TrackNorth Atlantic Storm TrackThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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