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ADDS - Icing Help Page (4 of 4)
Back to Icing Page or Icing help page 1
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Freezing Level Graphics Examples
- Case 1: temperature is below 0°C
at the surface and all levels above the surface
(represented in the graphic by white-colored pixels).
- Case 2: temperature goes above and below 0°C
two or more times through the atmosphere vertically and the
surface temperature is less than 0°C. These regions are
hatched with white but the underlying color represents the lowest
freezing level (as shown by the blue
arrow on the graphic)
- Case 3: temperature goes
above and below 0°C three or more times through
the atmosphere vertically and the surface temperature is
greater than 0°C. These areas are not highlighted but can
be found by locating regions where adjacent pixels change
by more than one color (when compared against the color scale),
for example, the area near southern Louisiana in the graphic above.
- Case 4: temperature at the surface is greater than 0°C.
There is only one freezing level found at the indicated height.
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