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The short term propagation effects caused by local weather changes are called as ______________

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The short term propagation effects caused by local weather changes are called as ______________

(a) Seasonal

(b) Temporal

(c) Diurnal

(d) Noise

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The correct option is (c) Diurnal

Explanation: The diurnal variations are short term propagation effects caused primarily by local weather changes and day/night transitions along the signal path. Variations in a refractive index of the atmosphere versus height from the ground contribute to the short term propagation errors.

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