Weather Glossary - Other
Indicates the 540 decametre line on the 1000-500 thickness chart. Often used as a rough guide to determine when an airmass is cold enough to produce snowfalls on the Australian southern alpine areas.
Night-time temperatures will drop well below average in the Capital from Wednesday.
Warmer-than-normal oceans have contributed to a late end to a big wet season across the southern hemisphere.
Marine scientists have upped the ante in their fight to save the Great Barrier Reef from the devastating effects of coral bleaching.