Charlie Pridham writes
In article ,
says...
The grand daughter insists there was a thin film of ice on the car
windscreen this morning. It was certainly pretty chilly but did anyone
else see this in UK? In the balmy SW it seems a bit early!
We have had a couple of grass frosts, the Gunnera is black
What is a grass frost? It's a term I hadn't heard till this year, when
it's been sneaking into all the weather forecasts. And how does it
compare with a ground frost or an air frost? And how do any of these
compare with a temperature of 0 deg C (since the weather forecast is
fond of announce that there will be night time temperatures of, say, 2
deg C and therefore we can expect a frost)
--
Kay