From AMS Glossary
A person who is professionally employed in the study or practice of meteorology.
It often refers to individuals who have completed the requirements for a college degree in meteorology or atmospheric science.
Amer. Meteor. Soc. 1987. Bull. Amer. Meteor. Soc.. 68. p. 1570.
Amer. Meteor. Soc. 1991. Bull. Amer. Meteor. Soc.. 72. p. 61.