Sunshine above the clouds
17th December 2021
We have got great Inversion conditions in Lochaber just now. Above the blanket of cloud is sunshine!
Some interesting temperatures. These were from midday today
650m temperature was 4.5 degrees
900m temperature was 2.6 degrees
1200m temperature was 8.0 degrees
Despite the warm summit temperatures, the snow is still surprisingly frozen. This is due to the low relative humidity in the atmosphere which produces a low wet bulb freezing level. This is a fairly complex concept to understand fully, but in practical terms, the wet bulb freezing level is what dictates if the snow freezes or thaws.
South towards the hills of Glen Nevis, with Glencoe visible on the right
Ben Nevis
Looking South-East towards Ben Lawers
The Glen Affric hills poking out through the inversion layer
Looking towards Creag Meagaidh with the Cairngorms in the distance
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