Related Clues:

• White coating on a mountain-top
• Global warming concern
• You could slip over to first person getting in touch with Clare for bed linen
• Shrinking polar covering
• Antarctic phenomenon
• Don't expect polar bear to use this in bed to keep warm from frost layer
• Mountain cover, often
• Permanent covering of frozen water
• Arctic ocean covering
• Hardtop with deficient heating system available globally
• Where you might end up, given a high degree of latitude
• Cheese - it's developed white surface layer
• Frozen polar region
• Extensive frozen layer over land
• Polar feature that's better around third of December