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Understanding the Weather

What is the dew point?

The dew point is a measure of how much moisture is in the atmosphere. It is the temperature to which air must be cooled for saturation to occur. It is a better measure of the amount of moisture in the air than relative humidity because it is not dependant on temperature.

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Indonesian ash plume still visible from space as flights resume

13:55 AEDT The eruption of Indonesia's Mt Lewotobi Laki-laki has reportedly killed at least nine people, caused widespread evacuations, and wreaked havoc with aviation.

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