The primary characteristic of meteorology that sets it apart from other applied sciences is its constant demand for periodic and timely observations. The entire world atmosphere must be observed, and its size and inaccessibility account in large part for the difficulty in advancing the discipline. It has been physically impossible to observationally sample the tremendous volume of the atmosphere with sufficient completeness to fully comprehend its vagaries, let alone make always accurate forecasts.
"A Review of a Decade of Space Camera Systems Development for Meteorology," Optical Engineering 8(6), 806201 (1 September 1970). https://doi.org/10.1117/12.7971521