A circuit in weather radar that reverses signal strength above a specified intensity level. In this mode, there is a void on the scope where echoes are most intense, and a turbulent cloud area appears as either dark or colored. The width of this void is indicative of a rain or turbulence gradient. Also called a contour mode.

Aviation dictionary. 2014.

Look at other dictionaries:

  • isoecho contour mode — A mode of operation of a monochromatic weather radar. When the button for this mode is pressed, areas of precipitation corresponding to red on a color screen turn black. This leaves the lighter green portion around the black area, allowing… …   Aviation dictionary

  • Contour line — This article is about lines of equal value in maps and diagrams. For more meanings of the word contour , see Contour (disambiguation). The bottom part of the diagram shows some contour lines with a straight line running through the location of… …   Wikipedia

  • Isopleths — An isopleth, or contour line, 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… …   Wikipedia

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