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 changes in rainfall intensity to be better evaluated. A thin line of green indicates a rapid change in rainfall rates (steep rainfall gradient), and such an area should not be penetrated because of the inferred high degree of turbulence.

Aviation dictionary. 2014.

Look at other dictionaries:

  • isoecho — 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… …   Aviation dictionary

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