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IsoplethsAn isopleth is a feature of meteorological charts, connecting points which have an equal value of some variable at a given time and spatial area. The particular variables shown on a given chart may include values such as pressure, temperature, wind speed, etc. They are used to assist in visualizing the general features of a meteorological "field". Some common types of isopleths include: Additional recommended knowledgeIsobar: a line of equal or constant pressure. Isobront: a line drawn through geographical points at which a given phase of thunderstorm activity occurred simultaneously. Isodop: a line of equal Doppler velocity on a radar display. Isodrosotherm: a line of equal dewpoint. Isoecho: a line of equal radar reflectivity on a radar display. Isogon: a line of constant direction of some vector quantity (usually used to describe the wind direction field). Isoheight: a line of constant geopotential height on a constant pressure surface chart. Because of their ubiquity, they are commonly referred to simply as "contours". Isohume: a line of constant humidity. Isohyet: a line of constant amount of precipitation during a given time period. Isohypse: same as an isoheight. Isotach: a line of constant wind speed. Isotherm: a line of constant temperature. Adaptations of isopleths in other sciencesIn sociolinguistics and dialectology, an isogloss is a line on a map showing the boundary between two regional speech variants. |
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Isopleths". A list of authors is available in Wikipedia. |