A. Defant

A. Defant refers to Albert Joseph Maria Defant (1884–1974), an Austrian meteorologist, oceanographer, and climatologist regarded as one of the founders of physical oceanography. He published fundamental works on the physics of the atmosphere and ocean, playing a key role in transforming oceanography into a physics-based science[1][6].

Trient, Austria Jul 12, 1884 Wikipedia
Science Oceanography Meteorology