Martian dust storms

A brief survey is presented of observational evidence and theoretical speculations concerning Martian dust storms. The observations fall into two major classes: earth‐based photographic records and Mariner 9 infrared spectra. Among the conclusions reached are that: the mechanism for loss of particles from the atmosphere is not Stokes‐Cunningham fallout, more experiments are necessary in order to reach an understanding of injection processes, observations of storm genesis from Mars orbit will probably be necessary to distinguish between different theories of storm dynamics.