Granular snow, also known as 'sugar snow, ' is a type of snow that is composed of small, rounded grains. It is formed when the temperature is just below freezing and the air is very dry. The two most common terms for this type of snow are NEVE and FIRN. NEVE is a term used to describe granular snow that has not yet been compressed into ice, while FIRN is a term used to describe granular snow that has been compressed into ice.