What is graupel?

Graupel [xiàn]: graupel, also known as snow pill or soft hail, has different names in different areas, such as, snow graupel, snow bean, etc. Ice particles with white opaque, nearly spherical and snow-like structures are often spherical or conical. 2~5mm in diameter, it often bounces when it touches hard ground, and it is crisp.

Colupole is a small white opaque ice particle, which falls when water vapor meets cold air at high altitude. Usually, this kind of granular solid precipitation is easy to form because the atmospheric temperature drops too fast and there is enough water in the atmosphere. Polonium does not belong to the category of snow, but it is also a kind of atmospheric solid precipitation, which often occurs at 0 degrees Celsius and may have a temperature of about -40 degrees Celsius. It is in an unfrozen state and usually occurs before or in snow.

The difference between hail and graupel in the extended data;

1 and graupel are loose and hail is hard;

2. Hail often appears in spring and summer, and graupel often appears in autumn and winter when the temperature is low, sometimes landing with snow;

3. Hail particles are relatively large, ranging from 5 mm to 5 cm in diameter, and the largest can reach 10 cm. The particles of graupel are much smaller, ranging from 2 mm to 5 mm in diameter;

4. Hail is translucent and graupel is generally opaque.

Baidu encyclopedia-graupel (weather phenomenon)

Baidu Encyclopedia-Hail (Weather Phenomenon)