| Term: | Snow roller |
| Definition: |
Roll-like snow formation, caused by a unique combination of snow, wind, temperature and moisture NSIDCCryosphere
A rolled-up, cylindrical mass of snow, rather common in mountainous or hilly regions. It occurs when snow, moist enough to be cohesive, is picked up by wind blowing down a slope and rolled onward and downward until it either becomes too large or the ground levels off too much for the wind to propel it farther. Snow rollers vary in size from very small cylinders to some as large as 1.5 m long and more than 2 m in circumference. AMSglossary Cylindrical masses of snow formed, more often in hilly regions, when moist snow is driven by the wind and then rolled onward. WMOMeteoterm GCW |