air frost


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air frost

n
(Physical Geography) the deposition of ice condensed from water vapour in the atmosphere on the surface when the air temperature is below 0°C
References in periodicals archive ?
He said it would be "a chilly night on Saturday with probable ground frosts and an air frost in hollows".
During the cold weather this winter someone asked me what the difference is between ground frost and air frost.
Here in Middlesbrough we have yet to see an air frost with one third of the winter behind us.
By the end of the last month, weather experts said there had been a series of mild nights with most weather stations south of Scotland yet to report an air frost.
Slight air frost overnight Tomorrow Newbury Good, good to soft in places.
This, combined with an air frost with minus temperatures, blows the freezing air into voids and cracks where water pipes are located, causing them to partially or totally freeze.
Abutilons, on the other hand, can take an air frost but when the stem freezes at ground level the bark literally blows off exposing the sap and the plant often dies.
Mr Snell warned: "Towns and cities will stay above freezing but away from them, temperatures will fall to around zero and there will be ground frost and pockets of local air frost.
Mr Ratcliffe said: "It's going to be pretty cold everywhere across the UK on Wednesday night, with widespread ground frost expected in the whole of the UK and perhaps air frost in places too.
Mr Snell warned: "Towns and cities will stay above freezing but away from them,temperatures will fall to around zero and there will be ground frost and pockets of local air frost.
Temperatures will dip significantly overnight and there will be an air frost first thing, which will clear fairly swiftly to make way for prolonged sunny spells.
Overnight there were nine ground frosts and one air frost.