Down in the glens, it was not far above freezing, and the cold air pooled as mist.
Similar successes have been replicated across the country, from the Portishead open air pool (north Somerset), Hilsea lido (Portsmouth) and the Droitwich Spa lido (Worcestershire).
Many dogs love water, and an open air pool in Calgary invited pooches to take the plunge on the last day of the season to raise money for charity.
"We're not normally open at night, but we put glowsticks in the pool and have some mulled cider afterwards," says James Totterdell, manager at Portishead Open Air Pool in Bristol, which held the first in its series of sold-out full-moon swims earlier this year.
Notably, these cold air pooling events occurred at small scales, approximately 0.5 1 km.
"It's not just roads, those are being catered for, but there's no local cinema, we've lost an open air pool.
The driest conditions were observed 100 200 m above the valley floor where mid-slope thermal belts frequently developed above areas of cold air pooling.
Bigg et al. (2012) demonstrated that cold air pooling occurs throughout the year and is strongest and most frequent during summer and autumn in a study of the Peak District of central England.
In mountainous landscapes such as Teakettle, knowledge of small-scale patterns of cold air pooling could enable spatial predictions of climate refugia, which in this case would act as small sanctuaries decoupled from regional climate regimes for more cold-adapted species (Daly et al. 2010).
