hail_fall_amount
https://w3id.org/hacid/data/cs/variables/cf/hail_fall_amount <https://w3id.org/hacid/onto/data/Variable>
"Amount" means mass per unit area. Hail is precipitation in the form of balls or irregular lumps of ice, often restricted by a size convention to diameters of 5 mm or more. Reference: American Meteorological Society Glossary http://glossary.ametsoc.org/wiki/Hail. For diameters of less than 5 mm standard names for "graupel" should be used. Standard names for "graupel_and_hail" should be used to describe data produced by models that do not distinguish between hail and graupel.
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hail_fall_amount