Late Twilight Glow of the Ash Stratum from the Eruption of Agung Volcano.
Observation of the height of the dust layer responsible for the onset of brilliant sunsets in the 30 degrees N zone since September 1963 gives evidence that the ash has diffused from the eruption of the volcano Agung on Bali. A height of 22 km is derived for the top of the primary stratum.
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