In meteorology, haar is a coastal fog along certain lands bordering the North Sea; the term is primarily but not only, applied in eastern Scotland.[1] Research has shown that haar is typically formed over the sea and is brought to land by wind advection.[2]
Variants of the term include har, hare, harl, harr, hoar and the origin may be Saxon.[3] Sometimes it is (especially in Northumberland) referred to as a Sea Fret.
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